Cybercriminals are continuing to refine their ransomware tools and attack techniques. The gang behind CryptoWall has released an updated and more streamlined version of their data-encrypting malware, and more than doubled the ransom they demand to decrypt infected PCs. Other recent ransomware advances include improved encryption techniques, to make it tougher to decrypt encrypted files without paying a ransom. To compel more ransomware victims to pay up, the attackers behind a different type of ransomware called Chimera have been threatening to publicly dump stolen data from victims whose PCs they have encrypted.”]
Source: https://www.cuinfosecurity.com/refined-ransomware-streamlines-extortion-a-8665