Via: AP:
A widespread and unusually resilient computer attack that began July 4 knocked out the Web sites of several government agencies, including some that are responsible for fighting cyber crime, The Associated Press has learned.
The Treasury Department, Secret Service, Federal Trade Commission and Transportation Department Web sites were all down at varying points over the holiday weekend and into this week, according to officials inside and outside the government. Some of the sites were still experiencing problems Tuesday evening.
Federal government officials refused to publicly discuss any details of the cyber attack, and would only generally acknowledge that it occurred. It was not clear whether other government sites also were attacked.
Others familiar with the outage, which is called a denial of service attack, said that the fact that the government Web sites were still being affected three days after it began signaled an unusually lengthy and sophisticated attack. The officials spoke on condition of anonymity because they were not authorized to speak on the matter.
The Homeland Security Department confirmed that officials had received reports of "malicious Web activity" and they were investigating the matter, but had no further comment. Two government officials acknowledged that the Treasury and Secret Service sites were brought down, and said the agencies were working with their Internet service provider to resolve the problem.
Ben Rushlo, director of Internet technologies at Keynote Systems, called it a "massive outage" and said problems with the Transportation Department site began Saturday and continued until Monday, while the FTC site was down Sunday and Monday.
Keynote Systems is a mobile and Web site monitoring company based in San Mateo, Calif. The company publishes data detailing outages on Web sites, including 40 government sites it watches.
According to Rushlo, the Transportation Web site was "100 percent down" for two days, so that no Internet users could get through to it. The FTC site, meanwhile, started to come back online late Sunday, but even on Tuesday Internet users still were unable to get to the site 70 percent of the time.
"This is very strange. You don't see this," he said. "Having something 100 percent down for a 24-hour-plus period is a pretty significant event."
He added that, "The fact that it lasted for so long and that it was so significant in its ability to bring the site down says something about the site's ability to fend off (an attack) or about the severity of the attack."
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