Meet Coldroot, a Nasty Mac Trojan That Went Undetected for Years

A Mac malware that can silently, remotely control a vulnerable computer and steal passwords from a user’s keychain has gone largely unnoticed by antivirus makers for two years — even though the code is readily available to download.

http://www.zdnet.com/article/coldroot-nasty-mac-trojan-went-undetected-for-years/