One thing for sure that I can say about computer attacks–they can be very sneaky. Pretty much like the story of Helen of Troy, a trojan horse virus can cause a huge surprise attack on your computer and all of your stored data. Sometimes, they might not even start messing things up right away. Some trojans will sit like a time bomb and then, one day, things start going haywire. I don’t really know how y computer got one. I’ve always thought I was a pretty careful web surfer, so maybe it was my sister who looks at all of those celebrity gossips websites and things like that.