"The ILOVEYOU worm (a.k.a. VBS/Loveletter and Love Bug worm), a
computer worm written in VBScript, is considered by many as the
most damaging worm ever. It started in the Philippines on May 4,
2000, and spread across the world in one day (traveling from
Hong-Kong to Europe to the United States), infecting 10 percent of
all computers connected to the Internet and causing about $5.5
billion in damage."