Kaspersky Labs have discovered the first malicious Pocket PC trojan, which they’re calling Brador-A. Unlike previous proof-of-concept Pocket PC viruses, which existed just to show that a virus could be targeted to the Pocket PC platform, Brador-A opens a backdoor listener that allows full control of an infected Pocket PC – a typical malicious trojan payload.
The good news is that it can’t spread by itself – in order to become infected, you have to actually run the trojan’s execuatable. Of course, every mass-mailing worm known to man has proven that it’s trivial to get people to do this. All you need is an email saying “check out this cool new Pocket PC app!” *sigh*
I don’t foresee this becoming a big problem for Pocket PC users, since you’d almost have to try to get infected with it, and your device would have to be connected to the internet all the time in order for anyone to take advantage of the backdoor, but it’s interesting nonetheless that virus writers are starting to target the Pocket PC as a platform. Microsoft recently overtook Palm in marketshare for mobile device OSes (Symbian is still number one), so I guess it was only a matter of time.