NEW YORK (Reuters) - A hacker attack on Internet services company Akamai Technologies Inc. disrupted access to large Web sites including those run by Yahoo Inc. (Nasdaq:YHOO - news), Google, and Microsoft for up to 2 hours early on Tuesday, according to Web tracker Keynote Systems Inc.
Starting at about 0830 EDT/1130 GMT today, a major "Internet performance issue" was detected, according to Lloyd Taylor, vice president of technology and operations for Keynote (Nasdaq:KEYN - news), which tests and monitors Web sites.
"The availability issues were limited to several large sites, all of whom outsource their domain name server (DNS) services to Akamai. These sites dropped to near-zero availability," he said.
Availability was largely restored by about 1045 EDT/1645 GMT, Keynote said.
A spokesman for Cambridge, Massachusetts-based Akamai (Nasdaq:AKAM - news) was not immediately available to comment.
Keynote, which counts Akamai as a customer, said that disruption was the result of some kind of attack, although they could not speculate who was responsible, or how it was launched.
"We can speculate that it was probably due to some kind of coordinated attack on the DNS infrastructure that Akamai hosts," said Keynote analyst Roopak Pitel. "We are reasonably confident that it wasn't a problem internal to Akamai."
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