hypnosec writes "A recently discovered Trojan sample indicates that malware writers have taken up Google’s Go programming language to code new malware. The Encriyoko Trojan has some of its components written in Go that once installed on a target system attempts to encrypt files using the Blowfish algorithm thus rendering the files unusable. Symantec warns, "Restoration of the encrypted files will be difficult, if not impossible." Part information stealer, part file encrypter this Trojan is probably the first one coded in Google Go."
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