10 of the worst moments in network security history

Spam, hackers, worms -- oh my! Events that shock sensibilities and shaped the future

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Morris, that worm: Nov. 2, 1988 - present: Cornell student Robert Morris claimed he unleashed this bad boy not to cause damage but to estimate the size of the Internet. True or not, his handiwork cascaded into a denial-of-service attack that hit an estimated 6,000 Unix computers in an era when only about 60,000 such machines comprised the Internet.

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10 of the worst moments in network security history

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