The was particularly effective for two reasons: It was sent from "safe" senders (those already in the recipient's address book), and the file resembled a text file. As a result, the virus managed to reach an estimated 50 million computers (only Windows computers were affected) and cause an estimated $5.5 billion in damages--the Pentagon, the CIA, and the British Parliament all had to shut down their e-mail systems.

Just a day after the , police in the Philippines arrested two computer programming students. Unfortunately, the authorities were unable to convict the two of any crime, as there was no law, at the time, .

Years: 2000-Present

Predicted outcome: Planes falling out of the sky