Tech Time Warp: Nimda worm slows traffic with multiple propagation methods
In this week’s Tech Time Warp, we look back to September 2001. While the world was reeling from the 9/11 terrorist attacks, hackers unleashed a new threat: a worm that could modify existing websites to trick users into downloading malware.
With so many means of replicating itself, Nimda was difficult to remove. At the time, most antivirus tools either removed or quarantined infected files, but Nimda was insidious. The worm created guest accounts with admin rights and modified critical files and registry keys. Network administrators had to remove infected systems from networks to reformat their hard drives, reinstall software, and apply security patches. The Nimda experience brought about the realization that cybersecurity can’t take place at just one gateway but needs to be present at every access point, ushering in the era of multiple layers of security.
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