AOHell was a Visual Basic program written by Da Chronic in the early 90's. It was supposed to expose security holes in AOL. Though a lot of it just automatically spammed chat rooms and IMs with elaborate ASCII drawings, it did have some features that gave AOL a headache. Among them was an automatic Phisher, which would IM many people at once pretending you worked for AOL and needed their password for official reasons. This combined with a lot of newbies to the online world led to many stolen accounts. This doesn't seem so bad today, but this was back then AOL charged by the hour. Imagine script kiddies, except they don't even need the technical knowlege to get on IRC.

AOHell could also automatically generate a fake account with random credit card numbers. It also let you download and chat without being charged for time spent online. Ironically, AOL would later use these ideas themselves.