From the article
Hackers will often attack the most popular programs and platforms to cause maximum damage. With several recent exploitations of Apple’s Mac OS X operating system, that may mean that it is no longer just a scary world for Windows users.
Oomp.A is a worm that spreads by sending itself to an infected Mac user’s iChat contacts in a file called “latestpics.tgz.” Once run, the file replaces several Mac system applications with copies of itself, causing errors when the original program is run.
