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Under short messaging service (SMS) spam is understood the unsolicited or undesired messages received on mobile phones. These SMS spams constitute a veritable nuisance to the mobile subscribers. This marketing practice also worries service providers in view of the fact that it upsets their clients or even causes them lose subscribers. By way of mitigating this practice, researchers have proposed several solutions for the detection and filtering of SMS spams. In this paper, we present a review of the currently available methods, challenges, and future research directions on spam detection techniques, filtering, and mitigation of mobile SMS spams. The existing research literature is critically reviewed and analyzed. The most popular techniques for SMS spam detection, filtering, and mitigation are compared, including the used data sets, their findings, and limitations, and the future research directions are discussed. This review is designed to assist expert researchers to identify open areas that need further improvement.

The importance and utilization of mobile communication are increasing day by day, and the short message service SMS is one of them. Although SMS is a widely used communication way, it brings together a major problem, which is SMS spam messages. SMS spams do not only use vain in the mobile communication traffic but also disturb users. Based on this fact, blacklisting methods, statistical methods which are built on the frequency of occurrence of words or characters, and machine learning methods have been employed. Because punishments and legal laws are not enough to solve this problem and the Group Special Mobile number of SMS spam can easily be changed, a content-based approach must be proposed. Content-based methods showed high success in spam e-mail filtering, but it is hard in the SMS spam filtering because SMS messages are extremely short and generally contains many abbreviations. In this study, an image processing method, local ternary pattern was improved to extract features from SMS messages in the feature extraction stage. In the proposed one-dimensional ternary patterns, firstly, text message was converted to their UTF-8 values. Later, each character its UTF-8 value in the message was compared with its neighbors. Two different feature sets were extracted from the results of these comparisons. Finally, some machine learning methods were employed to classify these features. In order to validate the proposed approach, three different SMS corpora were used. The achieved accuracies and other employee performance measures showed that the proposed approach, one-dimensional ternary patterns, can be effectively employed in SMS spam filtering. Copyright © 2016 John Wiley & Sons, Ltd.

Security is a very important aspect in data communication. In the last decade, there was a rapid development in mobile phone technology. Smartphone have been equipped with various features and one of them is the short message service (SMS). However, messages sent via mobile phone networks pose threat to be accessed by people who do not have any authorization. Therefore, it is necessary to do research on the development of software to enhance the security of messages through message encryption and decryption features. This application uses Java programming language with SDK (Software Development Kit) Android and Android Studio 1.3.1 as an editor. The initial step of this research is to encrypt the original message to produce the ciphertext message. The second step is to decrypt ciphertext incoming messages to become genuine message. Results from this research are an Android-based application that can perform encryption and decryption of the SMS messages using the RC6 algorithm. With the application of cryptography for SMS messages, the expected level of information security of the message can be improved so that the message will be more secure from unauthorized access.

SMS spam detection is an important task where spam SMS messages are identified and filtered. As greater numbers of SMS messages are communicated every day, it is very difficult for a user to remember and correlate the newer SMS messages received in context to previously received SMS. SMS threads provide a solution to this problem. In this work the problem of SMS spam detection and thread identification is discussed and a state of the art clustering-based algorithm is presented. The work is planned in two stages. In the first stage the binary classification technique is applied to categorize SMS messages into two categories namely, spam and non-spam SMS; then, in the second stage, SMS clusters are created for non-spam SMS messages using non-negative matrix factorization and K-means clustering techniques. A threading-based similarity feature, that is, time between consecutive communications, is described for the identification of SMS threads, and the impact of the time threshold in thread identification is also analysed experimentally. Performance parameters like accuracy, precision, recall and F-measure are also evaluated. The SMS threads identified in this proposed work can be used in applications like SMS thread summarization, SMS folder classification and other SMS management-related tasks.

In today's fast world, mobile phones become very import for every human being. But almost everyone might have experienced with misplacing or losing of their mobile phones. So, the security of mobile phones are becomes more challenging one. To detect and monitoring of thefted or misplaced mobile phones, this paper develops an unique and efficient android application. The features of this technique are quite different from the existing tracker applications which would be helpful in tracing the lost mobile phones without the help of any protecting agency. The tracking application has the capability of SIM card detection, call monitoring, image capturing etc based on some predefined SMS. The application installed will be running in the background and won’t be shown in the task manager as well. Once the mobile phone is lost, this application enables the user to track a mobile device and to receive notification via SMS to a predefined number. Some specified formatted messages can be used to control the thefted mobile phone.

Although many ways to communicate with someone, SMS is still one of the popular media to send a message to someone. Not unlike the others, the messages sent can be known by the third party either tapping or the investigation. Unencrypted SMS can be easily obtained from communication providers so that they may be misused. Since the communication devices have been using Android operating system, they are programmable. There is various script can be inserted to devices to protect the data. One of them is Vernam Cipher. This method offers how to protect personal messages sent via SMS easily. It converts the message into an encrypted message shortly before sent. At the moment there tapping on the outside, the information is not easily understood its contents. The message is entirely secure.

From 2009, the market of smart devices has been rapidly increasing. These devices provide various services to users. The cloud messaging service, especially, is applied to many various services, and sends messages asynchronously. In the cloud messaging service, there are two methods for message transmission, message transmission based on an IP address and a publish/subscribe technique. Each technique uses basic messages in order to send messages to mobile devices. In this paper, the hybrid message transmission, based on user-customized analysis to reduce basic messages, is proposed. The hybrid message transmission uses Exponential Moving Average (EMA) and K-means algorithms for user-customized analysis, and determines the message transmission techniques in each timeslot.

This study introduces a direct and intuitive method to resist certain apps from sending SMS message stealthily. According to the heuristic analysis and observation, it is apparently that a SMS message, which has the textual content originated from user's entering manually, is obviously benign. We use this principle to design a serious of SMS examination and verification procedures, in order to force all SMS messages to be verified automatically before delivering them actually. A package named as Taurus, which is comprised of several new components, are developed in the Android framework in this study. The evaluation shows that Taurus, which examines all outgoing and detects potentially malicious SMS messages, has an excellent performance with reasonable memory usage overhead.

Almost every business uses SMS for various reasons to increase sales and brand exposure and Mass alert to everyone. 80% of cell phone users carry their phone all the time. Sending a text message to their cell phones is the perfect way to alert them of any urgent information, such as a change of appointment, or product ready for pickup etc. Mass alert are an ideal way for school districts to send alerts to parents regarding school closings, changes in schedules etc. The short message service (SMS) is one of the highly used and well-tried mobile services with global availability within all GSM/CDMA networks. The existing SMS is limited to the transmission of secure plain text between different mobile phone subscribers and server for different purpose. SMS does not have any built-in procedure to authenticate the text and offer security for the text transmitted as data [5], because most of the applications for mobile devices are designed and developed without taking security into consideration [6] [7], But we can use SMS service to protect our financial transaction by enable or disable the account apply some security on SMS. It will help to control fraud on financial traction by ATM or online fund transfer. In this paper detail an overview of SMS transmission and how to apply security on SMS to transfer from one point to another point.

With more and more peer-to-peer (P2P) applications being utilized, the P2P traffic accounts for the majority in Internet, and thus leading to the network congestion problem. Reducing the redundant propagations of messages is an effective approach for solving such problem in unstructured P2P networks. In this paper, we first define a novel message structure which contains the information of message propagation path, and then three operations, including the inheritance, supplement and collection, on the message transmission paths are proposed, based on which a node could forward the message to the nodes who have not received the message yet purposefully by using the information of the past received messages and the characteristics of space and time of node activities, and thus eliminating the bandwidth consumption problem caused by the flooding-based message propagation approaches. The simulation results show that our strategy could effectively reduce the number of the redundant messages without lowering the message coverage ratio.

For mobile phone users, short message service (SMS) is the most commonly used text-based communication type on mobile devices. Users can interact with other users and services via SMS. For example, users can send private messages, use information services, apply for a job advertisement, conduct bank transactions, and so on. Users should be very careful when using SMS. During the sending of SMS, the message content should be aware that it can be captured and act accordingly. Based on these findings, the elderly, called as “Silent Generation” which represents 70 years or older adults, are text messaging much more than they did in the past. Therefore, they need solutions which are both simple and secure enough if there is a need to send sensitive information via SMS. In this study, we propose and develop an android application to secure text messages. The application has a simple and easy-to-use graphical user interface but provides significant security.

SMS (Short Message Service) is a facility for sending and receiving a short message of text by using a cell phone. SMS is a medium of communication that is easy to use and relatively cheap for SMS costs. Messages sent via SMS does not guarantee the security and confidential because messages that are sent using the default SMS application for your mobile phone is still an open text that has not been protected. Therefore, it takes a method and applications to secure the confidentiality of the information in an SMS message.This research aims to develop short message encryption applications on android smartphones using Vigenere algorithm utilizing euler's number as a safety and maintaining the confidentiality of this SMS only to a functioning android smartphone users to send messages and message encryption as well as receive incoming messages and decrypt the message. Starting from the early stages of identifying, needs analysis, design, implementation and testing.Application of message encryption using vigenere algorithm utilizing euler's number digit can help users of android smartphone to secure the contents of the message are confidential. Keywords: Short Message Service, the number of euler, vigenere algorithm

Mobile phones have been identified as one of the technologies that can be used to overcome the challenges of information dissemination regarding serious diseases. Short message services, a much used function of cell phones, for example, can be turned into a major tool for accessing databases. This paper focuses on the design and development of a short message services-based information access algorithm to carefully screen information on human immunodeficiency virus/acquired immune deficiency syndrome within the context of a frequently asked questions system. However, automating the short message services-based information search and retrieval poses significant challenges because of the inherent noise in its communications. The developed algorithm was used to retrieve the best-ranked question–answer pair. Results were evaluated using three metrics: average precision, recall and computational time. The retrieval efficacy was measured and it was confirmed that there was a significant improvement in the results of the proposed algorithm when compared with similar retrieval algorithms.

Nowadays, short message service (SMS) is being used in many daily life applications, including healthcare monitoring, mobile banking, mobile commerce, and so on. But when we send an SMS from one mobile phone to another, the information contained in the SMS transmit as plain text. Sometimes this information may be confidential like account numbers, passwords, license numbers, and so on, and it is a major drawback to send such information through SMS while the traditional SMS service does not provide encryption to the information before its transmission. In this paper, we propose an efficient and secure protocol called EasySMS, which provides end-to-end secure communication through SMS between end users. The working of the protocol is presented by considering two different scenarios. The analysis of the proposed protocol shows that this protocol is able to prevent various attacks, including SMS disclosure, over the air modification, replay attack, man-in-the-middle attack, and impersonation attack. The EasySMS protocol generates minimum communication and computation overheads as compared with existing SMSSec and PK-SIM protocols. On an average, the EasySMS protocol reduces 51% and 31% of the bandwidth consumption and reduces 62% and 45% of message exchanged during the authentication process in comparison to SMSSec and PK-SIM protocols respectively. Authors claim that EasySMS is the first protocol completely based on the symmetric key cryptography and retain original architecture of cellular network.

Mobile phone users have been using the SMS to send and receive text messages between them. Recently, GSMA(GSM Association) proposed the next generation instant messaging service, RCS-e(Rich Communication Service-enhanced). This was unavoidable because new OTT(Over The Top) services have emerged that threat the SMS after smart phones became popular. However, the RCS-e has limitations that it cannot inter-operate with the SMS which is still widely used. This paper propose a software framework that inter-work SMS with RCS-e. Call flows for canceling wireless contracts and sending SMS messages to RCS-e users were defined. Also, methods for protocol conversion were defined to inter-work two services. The performance evaluation showed that the proposed framework does not increase loads on IMS(IP Multimedia Subsystem) infrastructure.

In this paper we propose threshold public key cryptosystem for securing SMS between mobiles using a new method of Encryption and Decryption process of asymmetric cryptography. The mobile plays an important role in the online transactions; today 89% of mobiles communicating with the corporate data and carry the sensitive data like passwords, Bank pin numbers are also stored in the mobile devices, must be secured. The encryption plays an important role in the information security. The most important aspect needed to be considered while using cryptography to SMS security is the data storage and processing capabilities of the mobile phone. So in this paper we propose new technique HP-RSA (High Performance RSA) mainly helps in reducing the decryption process time, avoids the attacks at mobile devices (insecure data storage) and also reduces network traffic when we send SMS between devices. Considering all aspects in this paper proposed HPRSA provides higher authentication and security to the messages shared, which can be efficiently used in small devices like mobile phones.

The last few years has seen a massive growth of applications for smart phone operating systems such as Android, IOS. Short message services (SMS) is one of them. Although SMS as an application has existed for a long time, the method for managing short messages is rather outdated and very inconvenient. The is partially because most of the SMS applications are inherited from old fashioned mobile platforms, in which users of mobile phone usually concentrate on basic phone service and demand less for SMS. With the introduction of smart phone operating system, the old-fashioned method of short messages management is not suitable. To cope with this problem, in this paper we first conduct research on modern ways of short messages management, and then a short message services management system for mobile devices is designed. In this new system, more advanced options, such as messages query by date, by sender and sending a message to many receivers at the same time, for short messages is provided. Moreover, to validate our research and design, we implement the system based on Android platform. And we conduct some experiments with this system and test results shows that our system works quite well. With the mobile Internet becoming increasingly important to life, our research is expected to improve work efficiency greatly.

messages are one of the popular ways of communication. Sending an SMS/MMS is cheap, fast and simple. Because of mobile networks attack or smartphones hackers, the GSM networks are not secure, so that all information or SMS/MMS messages are vulnerable. This paper describe an android application that helps the user to encrypt the message (SMS/Multimedia files) before it is transmitted over the mobile network. The new idea of the program is to transmit encrypted messages and multimedia files via mobile networks or the internet as an alternative mean. To maintain intensive security, the program uses a Hybrid encryption algorithm based on Blowfish and S-Boxes of DES encryption. Moreover, it uses a private key encrypts the files and another private key encrypts file name. The transferring media is maintained online in the absence of mobile network coverage.

In this study, an application has been developed in the Eclipse environment for android that is used to locate the stolen mobile devices with turned on status. If an user send a Short Message Service (SMS) to our device from another phone as soon as we notice that our device is stolen, the designed application, which the name of "Secand" was given by us, will detect the password within this SMS and understand that our phone is stolen. Our application must be continuously running in the background in order to detect this incoming SMS. After our application detects the password within SMS, it will retrieve Global Positioning System (GPS) coordinates of our device and send these coordinates to us via SMS. Secand must have all GPS and SMS related authorizations for all of these operations. If it is assumed that the thief is on the move after the first GPS coordinates are sent, our application must send the coordinates of device in certain frequencies. This range of time can be set by the user. Such details can be activated optionally by the user after Secand application is installed to the device.

We have used SMS to exchange messages between mobile phones. Since the network evolved to the ALL-IP network, the next generation messaging service, RCS, has emerged to the market. Because SMS and RCS coexist, we need to inter-work the messages between SMS users and RCS users. This paper introduces a message inter-working framework(MIWF) that can inter-work SMS and RCS without changing end user`s UX. It defines the call flows between the network equipment and MIWF. Also, it shows how MIWF converts messages between 3 protocols. Performance evaluation proves that MIWF does not add loads to the existing network.

The short message service (SMS) has been put into the application well in many professional areas, and how to apply it in the instruction management is a subject allowing the personnel working at educational technology area to solve. This paper analyzes the constitution of short messages and describes the design of the short message service platform on the campus network based on the B/S structure, and presents the method of how to carry out the short message service platform based on the WEB in which we can integrate the information releasing and order function to play the information.

This project will focus on developing an enhancement of the vehicle alarm security system via SMS. The system will manipulate a mobile phone to send SMS (Short Message Service). Even though the SMS can be sent using the features available in the mobile, the objective of this project is to activate the SMS sending by the mobile phone using external program, connected physically to the mobile phone. The study of telecommunication is an interesting field because it involves digital signal processing, signal and systems, programming and more. This inspires people to improvise the technology into daily use. In this project, the technology of telecommunication, to be specific; SMS, is integrated or improvised to the present vehicle security system. Instead of human to human telecommunication, this system creates new entity which is machine to human telecommunication. This system is an upgrading and improving vehicle security system by integrating SMS features to alert vehicle owners whenever intrusion occurs. This project involves hardware and software parts construction and the integration of both parts to create the system. We succeed in achieving the objective and in fact, add another feature to the system which will initiates a call to the owner after sending the SMS. In the end of this project, we will document all the hardware and software development and provide a simulation model of the system. An interfacing mobile is also connected to the microcontroller, which is in turn, connected to the engine. Once, the vehicle is being stolen, the information is being used by the vehicle owner for further processing. The information is passed onto the central processing insurance system which is in the form of the sms, the microcontroller unit reads the sms and sends it to the Global Positioning System (GPS) module and using the triangulation method, GPS module feeds the exact location in the form of latitude and longitude to the user’s mobile. By reading the signals received by the mobile, one can control the ignition of the engine.

Mobile phone is a hand-held communication device, the popularity of which has increased unbelievably over the past few years. This is not only because of the ability to make calls but also due to the Short Messaging Service (SMS) provided. Although, the number of people using mobiles is a myriad, there are still people who depend on landline phones for communication. The only way of communication in a landline phone is through voice/speech. Landline phones are not compatible with the short message service provided by mobile phones due to the absence of a screen to display the message received. E-mail is another means of communication, by which digital messages are sent from an author to one or more recipients. The SMS sent from a mobile phone to a landline number or other mobile phone is converted into voice and sent via e-mail to the recipient. The system aims at sending the text message, as a 3 step process First among them is pre-processing, second is synthesis of speech and finally, transmission. During pre-processing, the shorthand notations in the text message are converted into proper English form. In the second part, this pre-processed text is converted into speech. The final step covers the process of sending the synthesized voice message to the recipient. This system comes in handy when people with speech impairment want to send messages to other people, in the form of voice.

Compression of short text strings, such as the GSM Short Message Service (SMS) and Twitter messages, has received relatively little attention compared to the compression of longer texts. This is not surprising given that for typical cellular and internet-based networks, the cost of compression probably outweighs the cost of delivering uncompressed messages. However, this is not necessarily true in the case where the cost of data transport is high, for example, where satellite back-haul is involved, or on bandwidth-starved mobile mesh networks, such as the mesh networks for disaster relief, rural, remote and developing contexts envisaged by the Serval Project [1-4]. This motivated the development of a state-of-art text compression algorithm that could be used to compress mesh-based short-message traffic, culminating in the development of the stats3 SMS compression scheme described in this paper. Stats3 uses word frequency and 3rd-order letter statistics embodied in a pre-constructed dictionary to affect lossless compression of short text messages. This scheme shows that our scheme compressing text messages typically reduces messages to less than half of their original size, and in so doing substantially outperforms all public SMS compression systems, while also matching or exceeding the marketing claims of the commercial options known to the authors. We also outline approaches for future work that has the potential to further improve the performance and practical utility of stats3.

The population alarm systems do not represent a new concept. Since hundreds of years ago the man used either smoke signals generated from certain upper locations, visible from long distance, getting through acoustic systems placed on high buildings, until now when mass-media channels extended the possibilities by the television and radio. However, either one of those mentioned above requested the individual to be located at the alarming moment in the area of action of the alarm. Otherwise, the message has no efficiency. This limitation is currently solved by additional communication channels such as the internet and the mobile networks. Messages are now able to be sent to the mobile screen, and the user can reply to messages either by using the short message service (SMS) or by emailing to someone, to a server, to a center. From the general pattern of alarming the population on certain events, the medical applications represent a very important field. Messages are sent from the patient to a central medical center and back to the patient. This paper focuses on the value that virtual tools developed with LabVIEW brings to us.

Traditional compression algorithms appear to be largely unsuccessful with regards to short strings. In developing countries without connectivity to the web and data infrastructure, SMS remains one of the few ways of handling text-based information. With SMS service providers typically charging for SMS messages on a per-message basis, there exists a need to provide some form of short string compression, specifically with regards to highly structured data. This paper seeks to answer whether or not dictionary structures produce better results of compression than traditional algorithms with respect to highly structured data.To determine whether or not this approach would work, we developed a configurable parser that, when properly configured, accepts the various forms of structured data as provided by the client. We then compare the results to traditional compression mechanisms and measure the success.

Short messaging service (SMS) is perhaps the most popular mobile technology prevalent among students in higher education due to its ubiquitous nature and the capability of two-way communication. However, a major limitation in two-way text messaging is sending back a part of received data with the reply message. This limitation results in users of a mobile learning environment being unable to reply back to the correct destination. This article presents a two-way text messaging system that can be integrated into a learning management system (LMS) to provide an interactive learning experience to the user community. Initially, a database is integrated into the LMS that holds message information such as recipient’s phone number, message body and user data header. A specific port associated with the SMS is used to conceal and exchange data of a particular course unit. Subsequently, software in the student’s mobile device captures this message and sends back the reply message to the appropriate course unit allowing both teachers and students to view messages sent and replies received pertaining to a particular course. Results indicate the educational impact of the proposed system in improving the learning environment and benefits it offers to the community in a campus-wide implementation. Keywords: SMS; UDH; PDU; LMS; concealed data (Published: 10 November 2016) Citation: Research in Learning Technology 2016, 24 : 31818 - http://dx.doi.org/10.3402/rlt.v24.31818

As the use of Android mobile phones grows, botnets are increasingly targeting smartphone features, which calls for further research on mobile botnet detection. Short Message Service (SMS) has become increasingly targeted by a number of malicious applications ("apps") that have the ability to abuse SMS features in order to send spam, to transfer command and control (C&C) instructions, to distribute malicious applications via URLs embedded in text messages, to send text messages to premium-rate numbers, and to exploit smartphones. In this paper, we propose a SMS- based mobile botnet detection module that employs unsupervised learning techniques, using clustering algorithms to group SMS messages into four classes and to classify reported text messages to one of those four classes. The module also uses a robust and efficient behavioural profiling analysis to detect whether there is any correlation between cluster outputs and alerts from reported profiles. Rule- based correlations are used to label SMS messages as either normal or malicious.

SMS (Short Message Service) is a messaging service in the mobile communication environment. In sending messages via SMS, message security is essential in order to maintain the integrity of the authenticity of the messages. Messages are secured not only in the aspect of confidentiality, but also on how the delivered message is not altered by someone. To overcome these problems, digital signature is required. Elliptic Curve Digital Signature Algorithm (ECDSA) with Boolean Permutation (BP) is one of the algorithms used for the process of adding and verifying the digital signature on the message. ECDSA is a public key cryptographic algorithm that is suitable to be implemented on devices with limited resources such as, mobile device or mobile phone. This is because the keys of ECDSA have relatively smaller than other public key cryptographic algorithms. ECDSA and Boolean Permutation can be implemented on mobile devices based on Android, and be able to verify the authenticity and maintain the integrity of SMS sent with several characteristics, such as, SMS that contains of letters, numbers, emoticons with the length of SMS that can be authenticated is 4 SMS - long in one delivery process (long messages).

Along with the popularity of telecommunication and mobile phone, short message (SMS) enters almost every human life. Meanwhile, each mobile phone client suffers from the harass of spam SMS. As the SMS service provider who is in charge of all industry SMS in east China, Dahan Tricom Corporation always invest much in anti spam SMS research. Recent years, we upgrade our anti-spam filter to semantic level. The core technology is described in this paper. Unlike other anti spam filter, such as anti spam emails, the anti spam SMS filter must face many difficulties oriented by SMS itself. Since SMS contains only 70 Chinese characters or 140 English letters at the most, it is always lack of semantic information. Also, vocal expressions often appear in SMS. In addition, the industry SMS often contains proper terms related to specific industry field. The anti spam SMS filter in this paper first leverages Vector Space Model (VSM) as its foundation technologies. Then, many modifications are made in the process in VSM method to address the difficulties of spam SMS filtering issue. Finally, the experiment result turns out to be acceptable in our commercial production environment.

International audience; In urban areas, the population density is still growing (the population density starts exceeding 20.000 inhabitants per km²), and so, the density of mobile users becomes very important. People are moving from home to work, from work to active places. One can take benefit of the mobility and the density to justify DTN (Delay Tolerant Network) approach protocol to convey SMS (or alternative messaging services) traffic. Indeed, the mobility of users, especially during the day, create an ad hoc mobile network where the nodes are the smartphones hold by mobile clients. In this paper, their performance evaluations are based on a measurement and analysis of SMS traces coming from a nationwide cellular telecommunication operator during a two month period, we propose several DTN like basic network protocols for delivering SMS. We perform a temporal and spatial analysis of the Mexico City cellular network considering geolocalized SMS to characterize the traffic. Such key characterization allows us to answer the question: is it possible to transmit SMS using phones as relay in a large city such as Mexico City? We define four network protocols to transmit SMS from a source to a destination. We study a mobile dataset including 8 Million users living in Mexico city. This gives us a precise estimation of the average transmission time and the global performance of our approach. Our analysis shows that after 30 min, half of the SMS are delivered successfully to destination. On the contrary to the cellular networks, we explain how much the potentiality of the mobile users network can take benefit from complementary properties such as the locality of SMS, the density of phones in Mexico City and the mobility of phone users. Moreover, we show that in a realistic scenario, our approach induces reasonable storage cost.

Short message is one of the most common communication media for mobile subscribers, so major mobile operators are devoted to improve their Short Message Service (SMS). However, the annoying and undesired messages, also named message spam or simply spam, not only worsen the users' experience, but also cause their complaints on SMS. In this paper, we present a novel Chinese SMS spam filtering framework based on AdaBoost algorithm to provide accurate and effective short messages classification. Three content-based weak filters are introduced to boost the performance of final classification decision. Results from Receiver Operating Characteristics (ROC) analysis prove the proposed method has such advantages as higher efficiency and fewer parameters over those established SMS spam filtering methods. The application of the proposed method is expected to block the most spam for mobile subscribers and improve the service quality of SMS. With simple data processing and few training parameters, the proposed method can be applied into the practice of short text classification.

National audience; In this paper, from a measurement study and analysis of SMS based on traces coming from a nationwide cellular telecommunication operator during a two month period, we propose a DTN (Delay Tolerant Network) like network protocol for delivering SMS. More precisely, we perform a temporal and spatial analysis of the Mexico City cellular network considering geolocalized SMS. The temporal analysis allows us to detect events and to check for overloading periods, with anormal or unexpected traffic, and to study the evolution of classical parameters such as activity or distance between source and destination. The spatial analysis is based on the Voronoï diagram of the base stations covering Mexico City. We explain how SMS traffic can be characterized. Such key characterization allows us to answer the question : is it possible to transmit SMS using phones as relay in a large city such as Mexico City ? We defined simple network protocols to transmit SMS from a source to a destination. This DTN like protocol does not need routing nor global knowledge. The protocol takes benefit from the locality of SMS, the density of phones in Mexico City and the mobility of phone users. We studied a mobile dataset including 8 millions users living in Mexico city. This gave us a precise estimation of the average transmission time and the global performance of our approach. After 30 minutes, half of the SMS were delivered successfully to destination.

Text messages sent via the Short Message Service (SMS) have revolutionized interpersonal communication. Recent years have also seen this service become a critical component of the security infrastructure, assisting with tasks including identity verification and second-factor authentication. At the same time, this messaging infrastructure has become dramatically more open and connected to public networks than ever before. However, the implications of this openness, the security practices of benign services, and the malicious misuse of this ecosystem are not well understood. In this paper, we provide the first longitudinal study to answer these questions, analyzing nearly 400,000 text messages sent to public online SMS gateways over the course of 14 months. From this data, we are able to identify not only a range of services sending extremely sensitive plaintext data and implementing low entropy solutions for one-use codes, but also offer insights into the prevalence of SMS spam and behaviors indicating that public gateways are primarily used for evading account creation policies that require verified phone numbers. This latter finding has significant implications for research combatting phone-verified account fraud and demonstrates that such evasion will continue to be difficult to detect and prevent.

Short message service (SMS) is popular used for data bearer/service within GSM, CDMA, and other cellular networks. However, the traditional SMS messaging does not provide the security services such as confidentiality, integrity, authentication, and non-repudiation, etc. In this paper, we propose a secure SMS protocol (SSP) at application layer and design the format of the secure message packet, and we design and implementation the secure SMS messaging system. This solution will help commercial companies and government authorities who need confidential information transmitted over the air to build secure SMS messaging.

Phone lost has been a major problem these days. This case can happened because of the user own fault (he place it in the wrong place and forget it) or because of intentional phone stealing. Seeing many of this missing case we try to develop a system for tracking and securing a missing phone. Android platform is selected because it is one of the best operating system for mobile phone right now and the user growth is very promising. This application will give an extra security when a phone gone missing, as we know we store a lot of sensitive data on our phone. The system work flow is very simple actually, our application will be on standby and monitor command that it received via SMS and it will work in the background so user won’t be get any distraction from this application. Using these commands user can lock his phone, sound the phone alarm, delete his phone data, get his phone data, and get his phone last location. This application have some other feature too, like lock his phone when someone change his phone card and send the new number that attach in his phone to the owner. When system get any request about phone's last position then system will process that request to get phone's latitude and longitude via GPS, after that system will quietly send it to the owner.

Peer-to-Peer (P2P) communicating is a networking and distributed communication paradigm which allows symmetric sharing of messages between two entities, ideally without any interception from any third entity. Privacy in peer-to-peer communication is, however, can be compromised via a large number of approaches.It is thereforea need of the hour to provide security against eavesdropping and electronic surveillance while exchanging confidential and/or personal information. SMS or Short Message Service is the most widely used mode of communication for information exchange around the globe. In this paper, an approach to android application is presented which will be helpful for users of android based mobile phones to share textual information via SMS without the fear of it being intercepted by any middle-man. A cryptography technique is implemented which avoids the leakage of clear messages that is being transferred from one end to the other, by encrypting it using an already exchanged private key, thereby making the middle-man unable to decipher the intercepted information. The private key exchange is done using the Diffie-Hellman key exchange algorithm, and AES-128 is used as the encryption/decryption algorithm. The messages sent and received are stored in a database accessible by the application, for future reference to the messages. The implemented application was successfully tested on Android Virtual Machine as well as on mobile phone running android version 2.3. The message received was a random jumble of characters and the original message was available only through the application.

The amount of Short Message Service (SMS) spam is increasing. Various solutions to filter SMS spam on mobile phones have been proposed. Most of these use Text Classification techniques that consist of training, filtering, and updating processes. However, they require a computer or a large amount of SMS data in advance to filter SMS spam, especially for the training. This increases hardware maintenance and communication costs. Thus, we propose to filter SMS spam on independent mobile phones using Text Classification techniques. The training, filtering, and updating processes are performed on an independent mobile phone. The mobile phone has storage, memory and CPU limitations compared with a computer. As such, we apply a probabilistic Naive Bayes classifier using word occurrences for screening because of its simplicity and fast performance. Our experiment on an Android mobile phone shows that it can filter SMS spam with reasonable accuracy, minimum storage consumption, and acceptable processing time without support from a computer or using a large amount of SMS data for training. Thus, we conclude that filtering SMS spam can be performed on independent mobile phones. We can reduce the number of word attributes by almost 50% without reducing accuracy significantly, using our usability-based approach. Copyright © 2012 John Wiley & Sons, Ltd.

The paper presents a security enhancement method, which is based on smart security TF card (STF), to improve the security of short message for mobile terminal system (MTS). The method consists of three parts: the use of STF as a secure cryptography service module, increasing and then invoking encryption/decryption components for SMS processing in MTS, increasing secure SMS gateway (SSG) on the SMS server side. Following the method, the confidentiality of the message can be guaranteed either in the air or in mobile terminal itself and message traffic analysis attack can also be prevented to some extent.

Mobile devices have revolutionised the world. They are now being used for M-Commerce applications. Their affordability, high availability, and usage convenience has made SMS based M-Commerce to take over ecommerce. Nowadays it is used as an alternative for online transaction systems. The SMS facility available in mobile phones is used for communication between client and server modules. The regular encryption and decryption algorithms cannot be used as mobile devices have limited memory and processing power. Keeping these limitations in mind a new framework is proposed. It involves suitable encryption and decryption algorithms and a frame structure. The proposed framework is implemented for a banking application. The user sends the SMS after encryption to the bank server through his mobile phone. The bank server is programmed to poll the modem for messages. On the arrival of a request, the bank server decrypts and authenticates the message before servicing it. The serviced reply is again secured by encryption before the transaction, details are sent back to the client as another SMS using the modem. The client decrypts the received messages and displays appropriate results to the user.

This article investigates how text messages and mobile phone calls interrelate as parts of continuous communication sequences. Based on the recorded mobile communication of 14-year-olds in Denmark and a conversation-analytic approach, the article will show that after a text message in a continuous communication sequence, four different types of conversation may follow: the answer (after a text message demanding a reply), the reminder (in case of a missing text message), the resumption of conversation (after a closed text message exchange) and the confirmation (after a text message with a request for/promise of a call). In itself, the change from text message to conversation requires no interactional efforts from the participants. However, changes of mode are related to the different communicative possibilities the text message and the phone call offer: text messages and calls have distinct formal qualities that govern their uses, and participants in a given sequence move between the two modes, exploiting the potential of each as they ascribe meaning to the written and spoken media.

This paper describes a software application for android mobile platform that discovers various excited applications of SMSs over its traditional text messaging application. It shows how various features in android mobiles can be automated by SMS. By this application user can perform various operations in its mobile even if mobile is very far from him , like by sending a single text message we can fetch and store our contact numbers, fetch our device's location, auto respond to the incoming messages, send SMS from our remote mobile, fetching SIM and mobile details used for GSM network. Convenience to the user, security and efficiency are main issues that are considered. This application makes the use of services like telephony, location based services (LBS) and native android applications. Index Terms—Android, LBS, new SMS applications, telephony. I. I NTRODUCTION SMS is very common and widely used way of communication. Now-a-days we do most of the communication with SMSs. Today in the era of technology we want most of the things to be automated. Imagine that it would be great if we could perform various functions in our mobile phones even if it is far from us or it could respond automatically like an intelligent device. So now this can be achieved by our SMS software application which is developed for android mobile platform. By using this application we can operate many functions via sending a SMS to the mobile phone which is far from us without interception of operator and in this way our android mobile phone will act as intelligent device. This application establish client-server relationship between mobile phones in which the mobile requesting operations by sending SMS will act as client and mobile serving those operations will act as server. Various operations that can be performed by this application are listed as storing and fetching contact numbers, fetching the device's location, sending SMS to other mobile phones through our remote mobile, auto responding to the incoming messages, finding and fetch the details about SIM and mobile like and we can also switch off our mobile via sending a SMS to it. This application makes the use of both traditional and advance technology like telephony and location based services (LBS). These services are also used in various applications but we are presenting them in very different way from there conventional use. There are some issues that have

2 Abstract: There are so much daily routine application where the SMS is being used including medical purpose, banking purpose and any other mobile purpose. Forwarding an SMS is one of the cheapest, fastest and simple method. When we delegates message from one cell phone to another cell phone, the data contained in the message transmit as a vanilla text (unencrypted text). Consistently this data contained in the message may be arcane (private) like bank account number, identification key, and license number and so on, and it is an extreme trouble to transfer such data through message until the traditional message courtesy dose not supply (give) encryption to the data contained in the SMS before its transmission.

This paper proposes a mobile phone based security and control system for home appliances through SMS/Bluetooth. It focuses on controlling home appliances remotely, and providing security with good graphical user interface. The system uses GSM technology, providing ubiquitous access to the system for security and automated appliance control from anywhere around the globe. The system provides security against intrusion using a smarter digital lock which notifies owners in case of an unauthorized via SMS message, as well as facilitates both short and long-range device control using Bluetooth or SMS technology. Rather than a conventional method of sending an SMS message to control devices, a graphical user interface is designed using Python S60 language for ease of use. The control signals in the form of SMS messages are encrypted and restricted to unique mobile phones or SIM cards for improved security.

As a convenient, fast, reliable and economic value-added service, CDMA Short Message Service (SMS) becomes more and more popular in our daily work and lives. In this paper, the software package for sending and receiving short messages is realized, and it has simple interfaces and perfect functions. Based on WINCE 6.0, the USB port of Samsung S3C6410 is used as a virtual serial to realize the transmission of AT commands, and a specific realization of the processes and debugging results are given. The actual test results show that the software package can work stably. It can be used in the devices that support the WINCE 6.0.

We propose a new system for SMS information display board. The system will display texts and icons of a message on the matrix LED. To sending a message to the system, A user have to send a message SMS on a mobile phone. It's mean, the user can be anywhere in the range of mobile signal to control the message on the display board. Furthermore, the user is able to control the pattern, speed and time duration of the display message. In additional, the user can set the time of the message to display on the system in advance or cancel it. The system provide the security by using password method to verified the authorize user only. Finally the system can apply to variety of usage with a lot of concurrent users and message scheduling application.

SMS is the widely used service of mobile telephony technology. SMSCs developed by different companies use their own communication protocol and most of these protocols are proprietary. It can be solved using the SMS gateway, the SMS gateway acts as a relay between the two SMSCs. It is able to translate one SMSC protocol to another, and can be used by two different wireless carriers to interconnect their SMSCs. We describe the Structure Of SMS System, the Relation Class of SMS System and the process of designing the SMS Gateway

Network administrators are always concerned about either not getting notified or late notification about occurrence of a sudden failure in the network, or not being able to come up with a proper solution even if informed. The reason behind such a concern is that the network administrators are constrained by physical presence on the network site or access to the Internet. The present article introduces a novel method for mobile control and management of computer and telecommunication networks. In this method, an application program is installed on one of the systems under management network or any system which can access the Internet. Then, using SNMP, the application program collects the information required by the network administrator and communicates the same to him/her via the most comprehensive communicational service; namely, Short Message Service (SMS). In like manner, the network administrator can send his/her commands to the application software via SMS. Having received the commands and using SNMP, the application software executes them on those pieces of equipment intended by the network administrator. By this method, network administrators will be able to control and manage their networks fully just by sending a short message rather than needing access to the Internet or having to be present physically on the spot.

In order to provide essential data services, the cellular networks have opened interface with Internet enabling communication with the users beyond the coverage of their wireless signals across the globe. Besides economical expansion of the global system for mobile communication (GSM) services, this interface has given birth to new security challenges. Especially recent research has divulged that an adversary equipped with little more than a cable modem can block all voice communication in a metropolitan area or even in entire country of the size of USA by sending enormous short message service (SMS) traffic via Internet. To overcome this threat in particular and other client–server communication problems in general, a new secure protocol, Call-Back Authentication (CBA), for web to phone SMS communication is proposed. The protocol introduces two-tier server architecture and pulls data traffic control (PDTC) mechanism for secure communication. The protocol is aimed to throat-knot malicious traffic at GSM–Internet interface gateway. The results show that the CBA protocol secures all GSM services from Internet originated SMS floods. Moreover the authentication mechanism of the CBA protocol identifies and blocks the spoofed as well as the zombie requests. The CBA server requires lesser resources to deliver SMS as compared to existing mechanism.

Short message service (SMS) is the most popular mobile data service today. In Taiwan, a subscriber sends more than 200 short messages per year on average. The huge demand for SMS significantly increases network traffic, and it is essential that mobile operators should provide efficient SMS delivery mechanism. In this paper, we study the short message retransmission policies and derive some facts about these policies. Then, we propose an analytic model to investigate the short message retransmission performance. The analytic model is validated against simulation experiments. We also collect SMS statistics from a commercial mobile telecommunications network. Our study indicates that the performance trends for the analytic/simulation models and the measured data are consistent.