Final answer:
The O LoveLetter attack, also known as the ILOVEYOU virus, used a malware attachment to steal user information and passwords.
Step-by-step explanation:
The historical event that used a malware attachment to steal user information and passwords is the O LoveLetter attack. This attack, also known as the ILOVEYOU virus, occurred in 2000 and targeted computers running the Windows operating system. The virus spread through email and once opened, it would overwrite files and send itself to everyone in the user's address book, causing widespread damage and stealing user data.
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