7 Most Catastrophic Computer Viruses of All Time

7. Sasser

Estimated Damage: $500 million

The Sasser was written by a 17 year old German student, who upon his 18th birthday released this beast of a worm in the wild, where it spread like wildfire. Its main destructive force was its way of quickly finding new vulnerable machines on the network of each new infected one and spreading through, shutting down thousands of networks.

Most Catastrophic Computer Viruses of All Time - Sasser

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