Twitter Hack Details Revealed
Jack Spine writes "Twitter co-founder Biz Stone has confirmed both to ZDNet UK and Wired's Threat Level blog that a dictionary attack was used to hack Twitter. After the hacker distributed details on the Digital Gangster forum, celebrities such as Britney Spears and Barack Obama had their accounts defaced.
Wired spoke to the alleged hacker, while ZDNet UK got in contact with someone who had been on the Digital Gangster forum at the time."
No passwords were compromised except for the admin account he used the dictionary attack on. So really, the GP's analysis of harm done is pretty accurate.