It’s been a week since we’ve seen the new Mac malware, the iWork09 Trojan, which is disguised as pirated software. Since then there have been several reports about new Mac Trojans.

Before this we saw mostly lame malware for Mac OSX, but the iWork09 Trojan represents a new element to Mac Trojans — sophistication. This one contains peer to peer-like characteristics and even encrypts its traffic. It has also been associated with some recent distributed denial-of-service attacks.

One thing to remember when dealing with pirated software is that you might have a high price to pay, in this case ending up a Trojan that turns your computer into a zombie. We have seen this happen for years with Microsoft products and even with AV products. (If you search for “McAfee” on torrents sites, you will find a lot with serial numbers; but you won’t know whether the thing is a Trojan version.) Now this unfortunate trend has arrived on the Mac platform, with several reports of Trojan versions of pirated Mac applications.

Take care — you often get what you pay for.