Yesterday, we had a couple of Macs in our office turn up positive for the Inqtana worm. This is the first time we've ever dealt with a virus on a Mac.
Sort of.
It turns out we didn't have a virus at all. The vulnerability that the Inqtana worm exploits was patched back in mid-2005, and we're pretty good at keeping our software up-to-date around here, so we did a little poking around. Apparently, Sophos (the company that makes our anti-virus software) released a virus definition file that causes "false positives" for this worm when looking for viruses. So, it thought clean files were infected.
So we still haven't had a Mac virus yet (knock on wood!), but we had something pretty close. Since Sophos was set to delete infected files, a lot of files got deleted, which may as well have been like the behavior of a virus. Heh.
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