DNS attack left service provider down for five hours

The hackers responsible for Wednesday's attack on Comcast say they were angry with the company, and "wanted to take them out," according to a news report.

Comcast, one of the largest Internet service providers in the U.S., found that its primary Website, Comcast.net, had been defaced at around 11 p.m. on Wednesday. The hackers had redirected the traffic to another Web server, replacing some of the site's content with their own greeting.

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