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A long time ago, data was written, stored, and processed within a computer without the need to think about security in many respects. But the era of big data and data security now includes the era of data threats and cybercrime. Cryptography is created as a tool to keep the privacy of information that people or computers send to each other, even if it is present to another person on the communication channel. The main purpose of cryptography is providing privacy, while the main aspects are: confidentiality, integrity, and authentication as well. On the other hand, we have Tourism as a big business - where according to estimates by the World Tourism Organization it accounts for 10% of world GDP. The propose of research is to explain Tourism as an industry that uses BIG DATA, through which it can effectively offer personalized offers, tailored to the interests and needs of potential customers. BIG DATA is used to present a very large set of data that has been mined and analyzed to find patterns and behavioral trends. From, the point of view of internet data security, BIG DATA has used new opportunities in terms of security analysis and solutions to protect data as well as prevent future cyber attacks. And that offers more opportunities and risks for most businesses. Threats are in many business areas, including e-marketing, sales, e-commerce, multimedia, medicine, finance, and more. Whatever the current age, almost all aspects of human life are threatening. Therefore, it is imperative to protect user-information from harmful activities such as risks. Risk can become: from inside or outside. Outside risks - until recently, the only way to endanger the security of any organization, enterprise, has been to physically interfere and destroy the system. But now this is not the case. For hackers, it is easier and safer for the hacker to attempt to interfere with the system or through Remote Access Service (RAS) or via the Internet. Inside risks - Usually come from employees of the company, the organization, who may be malicious, unaware, or who make unintentional mistakes. Therefore, the security of the system is endangered by the misuse of rights with purpose and by ignorance or stupidity. These threats were further exacerbated during the COVID 19 coronavirus pandemic period - where many businesses switched to providing high-speed Internet service. So how can we protect our data from threats or other cybercrime? Or, how can we implement big data on cybersecurity techniques or tools are represented in this paper? But cybercrime management is also a challenge in the tourism industry. [ABSTRACT FROM AUTHOR]