The SecureMac team has detected another Horse Horder in the wild for the Mac. Like previous findings from this team, this Trojan Horse attempts to disguise itself on your system and then affect it negatively in some way. In the case of the BlackHole RAT 2.0, it slows down your system by tying up the CPU, executes shell commands, and attempts to erase the hard drive. In short, it’s something you don’t want.

A new piece of Trojan Horse malware has found its way onto pirated copies of Photoshop and iWork ’09, according to security firm Intego. The person using the pirated software activates the Trojan when he runs the other program to generate a false serial number. If he enters his admin password (standard procedure when installing most software), the Trojan installs other applications which start listening for an open TCP port, allowing another user to have remote access to the Mac.