Sophos one of the leading Antivirus software company's have found a new backdoor trojan targeting Mac OSX users. It seems it is a variant of a well-known remote access trojan (RAT) for windows users known as darkComet or BlackHole.  However Sophos calles it OSX/MusMinim-A or MusMinim for short. .

It's functions include

• Placing text files on the desktop
• Sending a restart, shutdown or sleep command
• Running arbitrary shell commands
• placing a full screen window with a message that only allows you to click reboot
• Sending URLS to client to open a website
• Poping up a face "Administrator Password" window to phish the target

For more information please visit Sophos site Direct Link

Knowing is half the battle (G.I Joe quote)