DoS-+KB+LH



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Both Twitter and Facebook were down in 2009. The companys blamed a denial-of-service attack for problems with Twitter. Facebook has also confirmed that it was targeted by a DoS attack that has caused some of its features to be very slow or to not work. The Twitter timeline suggests the problem started around 6 a.m. PDT."We are determining the cause and will provide an update shortly," Twitter's staff posted at 6:43 a.m. PDT on the service's status blog.Then, around 7:49 a.m. PT, the company posted, "We are defending against a denial-of-service attack and will update status again shortly." Around 8:15 a.m., the status blog post was updated with "The site is back up, but we are continuing to defend against and recover from this attack." (I still was unable to access Twitter.) Alert Site, who monitors the performance of websites, said that Twitter's home page went down at 6:05 a.m. PT and was showing 40 percent availability at 8:04 a.m. PT, but that timeouts were continuing from most of its monitoring locations at 8:30 a.m.  Sources:   ( []) []

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