WASHINGTON -- Hackers briefly overwhelmed at least three of the 13 computers that help manage global computer traffic Tuesday in one of the most significant attacks against the Internet since 2002.
Experts said the unusually powerful attacks lasted for hours but passed largely unnoticed by most computer users, a testament to the resiliency of the Internet.
Behind the scenes, computer scientists worldwide raced to cope with enormous volumes of data that threatened to saturate some of the Internet's most vital pipelines
The attacks appeared to target UltraDNS, the company that operates servers managing traffic for
Web sites ending in ".org" and some other suffixes, experts said.
Internet Fends Off Attack On Main Servers - National News 
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