The ILOVEYOU worm, also known as VBS/Loveletter and Love Bug worm, is a computer worm written in VBScript.WARNING: The Virus Source Code is for information purposes only, for researchers and computer virus or programming enthusiasts. No warranty is given or to be implied for any software listings contained herein. You take full responsibility for any damages caused by compiling, running, or sharing this information. Be aware that running any malicious code on another's computer or computer network might be a criminal act. Use at your own risk!
The worm arrived in e-mail boxes on May 4, 2000, with the simple subject of "ILOVEYOU" and an attachment "LOVE-LETTER-FOR-YOU.TXT.vbs".
Two aspects of the worm made it effective:
* It relied on social engineering to entice users to open the e-mail and ensure its continued propagation.
* It employed a mechanism — VBScripts — that, while not entirely novel, had not been exploited to such a degree previously to direct attention to their potential, reducing the layers of protection that would have to be navigated for success.