It was thus said that the Great ethan at
757.org once stated:
Early Macs definitely had viruses, a few that I got from thrift stores
still have the viruses on them. I don't think there is any memory
protection at all. Software selection for MacOS was pretty crappy, and it
was hard to get under the hood. So protecting yourself from them would be
very difficult on the Mac platform. All the file fork BS, dev tools hard
to get. Also, just like the iPhone pretty much everything was
shareware/commercial, less community stuff than the PC. I feel bad for the
people that grew up on MAcOS versus MS-DOS.
Memory protection does not protect you from a virus. It can protect other
running processes from being modified (if they belong to other users they
can't be infected at all; other processes owned by the user it's possible,
depending upon the system [1]) but that's it.
-spc
[1] I would say "yes" in general---you do have to be able to debug your
own programs and thus, intercept and modify a running process (at
the very least, to set a break point).