ILOVEYOU, sometimes referred to as Love Bug or Love Letter for you, is a computer worm that infected over ten million Windows personal computers. When it started spreading as an email message with the subject line "ILOVEYOU" and the attachment "LOVE-LETTER-FOR-YOU.txt.vbs". The latter file extension ('vbs', a type of interpreted file) was most often hidden by default on Windows computers of the time (as it is an extension for a file type that is known by Windows), leading unwitting users to think it was a normal text file. Opening the attachment activates the Visual Basic script. The worm inflicts damage on the local machine, overwriting random types of files (including Office files, image files, and audio files; however after overwriting MP3 files the virus hides the file), and sends a copy of itself to all addresses in the Windows Address Book used by Microsoft Outlook. This made it spread much faster than any other previous email worm.
The worm used the same principles that was described in the undergraduate thesis at AMA Computer College. Stated that the worm was very easy to create, thanks to a bug in Windows 95 that would run code in email attachments when the user clicked on them. Originally designing the worm to only work in Manila. Then this geographic restriction out of curiosity was removed, which allowed the worm to spread worldwide.
The computer worm intended to steal other users' passwords, which it could be use to log in to the Internet accounts without needing to pay for the service. Justified the actions on his belief that Internet access is a human right, and that he was not actually stealing.
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