Which was the fastest-spreading mass mailer worm?
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MyDoom
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ProRat
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Blaster worm
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Sobig worm
A
Correct answer
Explanation
MyDoom (2004) holds the record as the fastest-spreading mass-mailing worm in history, reaching its peak within hours of release. ProRat is a Remote Access Trojan, not a mass-mailer. Blaster worm propagated via network vulnerabilities (SMB), not email. Sobig worm was indeed a mass-mailer but MyDoom's spread rate was unprecedented, sending over 100 million infected emails in its first 24 hours.