For a virus to damage more than the current user's files, it would need root access. For that, it would have to have some sort of ability to "root" the system, usually overflowing a port. The problem is that a virus that could root several different UNIXes running different versions of services would have to have many different hacks in it and would be very large in size, and just the size alone would alert people to the fact it's a virus.
Viruses get by on x86 systems because of common exploitable problems. A 10-15MB virus would be much, much easier to detect. > > Well, I don't know if I'd go that far. They aren't common, but linux > > or any unix (or any OS really) can have a virus/worm written for it. > > A worm is not a virus. I think there's only 1 true virus written for > Unix, and it was more of a "proof of concept, IIRC. >
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