I actually did get a virus once in OS 8. It was the MBDF 2 virus. Annoying little bugger. I don't remember what it was supposed to do, but I don't think it could do it in OS 8 (it was designed for System 7, I think). It just made my computer crash. A lot. Eventually it started crashing at startup, rendering my system unusable. It killed about a day of my time. In the end all I had to do was launch Disinfectant, a freeware app, and it rid my system of the virus in less than a minute. Most of my time was spent trying every other possible solution for mysterious crashes. It didn't even occur to me that it might be a virus until hour number 10 or so. That was after I installed a fresh copy of OS 8 (for the second or third time) and found that after half an hour the problem had come back!