So far in 32 years using computers I only had trouble with one virus: Holocaust, also known as DOS/Kampana.A It was created by a group of students to protest the high prices of telephone calls in Spain, but instead of causing (any?) damage to the telephone company they were criticizing, it affected many other companies and thousands of citizens who lost their data. I had to reformat the hard drive and reinstall everything from scratch and lost a few school texts... and my copy of Monkey Island!!! 🤬