update 11:20am EST: @biz ---> Thursday, August 06, 2009 Denial of Service Attack On this otherwise happy Thursday morning, Twitter is the target of a denial of service attack. Attacks such as this are malicious efforts orchestrated to disrupt and make unavailable services such as online banks, credit card payment gateways, and in this case, Twitter for intended customers or users. We are defending against this attack now and will continue to update our status blog as we continue to defend and later investigate. http://blog.twitter.com/2009... - Susan Beebe

Twitter Status Blog - 2nd Update: "Ongoing denial-of-service attack -- We are defending against a denial-of-service attack, and will update status again shortly. Update: the site is back up, but we are continuing to defend against and recover from this attack." - Susan Beebe