The ILOVEYOU virus is considered one of the most virulent computer virus ever created and it's not hard to see why. The virus managed to wreck havoc on computer systems all over the world, causing damages costing an estimate of $10 billion.
The Love Letter Virus,ILOVEYOU, was a computer worm originating in the Philippines, which began infecting computers on May 5, 2000. It spread by e-mail, arriving with the subject line "ILOVEYOU" and an attachment, "LOVE-LETTER-FOR-YOU.txt.vb
It all started in the Philippines many hours earlier when 24-year-old Onel De Guzman released a virus that he had created.