I attempted to look at the source code for Melissa on a website. I clicked on the link to load the page which was in .txt format, and NAV brought up an alert saying there was a virus on my system.

My question is, how did NAV show the alert when the code was simply in .txt format and wasnt even on my computer. .txt files cant be used for viruses can they?

I just noticed that the files NAV alerted me to were the .txt files stored in the history. Even so, a .txt file cant run a virus can it?