Attackers start wiping data from CouchDB and Hadoop databases.

The article discusses destructive attacks on openly-accessible Hadoop and CouchDB databases by ransomware groups, which are of similar pattern as attacks on MongoDB open-source database program and search engine Elasticsearch clusters. Topics include efforts of security researchers Victor Gevers and Niall Merrigan to keep track of Hadoop and CouchDB victims by documenting attack signatures and messages left behind; and efforts of Kraken0, a ransomware attack group, to sell its attack toolkit.