-- 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.
The attacks appeared to target UltraDNS, the company that operates servers managing traffic for websites ending in "org" and some other suffixes, experts said.
Among the targeted "root" servers that manage global Internet traffic were ones operated by the U.S. Defense Department and the Internet's primary oversight body.
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