Сrypto-extortionists. What are they?

One of the relatively new trends in the world of cyber crime has become crypto-extortionists. What are they? This software, which gets on the victim’s computer, encrypts files on the hard drive using strong crypto algorithms and requires money from the user for decrypting this data. Using so-called cryptors, hackers encrypt all files on the user’s computer and after payment promise to provide the keys for decryption. One of the most high-profile examples of ransomware was CryptoLocker. In 2013, this malware attacked more than a million computers worldwide. After running on the victim’s computer, Cryptolocker starts running in the background and encrypts the data unnoticed by the user. The program then informs the PC owner that his files have been «taken hostage» and demands a ransom of between $ 300 and $ 3,000. In early June 2015, it became known about a new high — profile cyber ransomware-Troldesh, developed by Russian hackers. Troldesh refers to cryptographic programs that encrypt files with the xtbl extension, and is distributed through spam mailings.