FBIが，感染者のPCを暗号化してしまうランサムウェアの流行と被害について警告

下記の記事が出ている。

　FBI says crypto ransomware has raked in >$18 million for cybercriminals
　ars technica: June 26, 2015
　http://arstechnica.com/security/2015/06/fbi-says-crypto-ransomware-has-raked-in-18-million-for-cybercriminals/

　CryptoWall ransomware cost US victims at least $18 million, FBI says
　Naked Security: June 25, 2015
　https://nakedsecurity.sophos.com/2015/06/25/cryptowall-ransomware-cost-us-victims-at-least-18-million-fbi-says/