Cerber3 ransomware is new version of notorious Cerber virus that infected hundreds of thousands computers. It uses the same algorithms to infect computer and encrypt user files. Now it appends .Cerber3 to those files. Names of the files are changed to random 10 character sequence. Among other differences between Cerber3 and it predecessor are new ransomware note files (@__README__@.html, @__README__@.txt and @__README__@.url instead of #DECRYPT MY FILES#.txt, #DECRYPT MY FILES#.html, #DECRYPT MY FILES#.vbs). Text and html files contain identical instructions to pay the ransom, .url file opens Cerber3 website.