Armageddon virus
From Tardis Wiki, the free Doctor Who reference
The Armageddon virus was a computer virus which a group of Earth cyber terrorists used at some point before 2009 in an attempt to bring down the entire international banking network. They were stopped by the FBI, and afterwards circulated under security experts. When Mr Smith tried to destroy Earth, Alan Jackson — having acquired it from "unorthodox contacts" — used this virus to erase his memory. (TV: The Lost Boy) The virus may have had some lasting effects on Mr. Smith, including new personality quirks such as a sense of humour.