Home » PostsCryptoWall ransomware held over 600K computers hostage, encrypted 5 billion filesA file-encrypting ransomware program called CryptoWall has infected over 600,000 computer systems world over, in the past six months and encrypted 5September 1, 2014 · 1 min · 16 words · Manuel HamptonThe research done by the CTU has confirmed the worst fears of the researchers.source: www.techworm.net