Report: Hacker broke into Twitter e-mail with help from Hotmail

20.07.2009
The hacker who used a feature of Microsoft's Hotmail to hijack an employee's work e-mail account, the site that has published some of the Twitter documents said Sunday.

According to , the Web site that last week broke the story about the Twitter breach and has posted some of the stolen information, the hacker calling himself Hacker Croll took advantage of poor password practices, Hotmail's inactive account feature and personal information on the Web to pinch hundreds of Twitter documents.

TechCrunch said it convinced Hacker Croll to divulge the details of his attack, and over the course of several days' conversations was able to piece together not only the original breach, but how some information he obtained allowed him to compromise the e-mail accounts of Evan Williams, Twitter's CEO, and one of its co-founders, Biz Stone.

Hacker Croll first jacked the personal Gmail account of a Twitter employee -- last week the person as an administrative assistant with the company -- by resetting the account's password. To do that, Hacker Croll had to answer one or more personal questions used to authenticate the user. According to TechCrunch, Hacker Croll had previously researched this employee, and others at Twitter, by digging through the Internet for likely responses.

Security experts last week speculated that the same process used by a Tennessee college student to Yahoo e-mail account was at the root of the Twitter breach.

"[This was] about weak passwords that are easily guessable, with a huge contribution from people's habit of putting online information that they wouldn't otherwise share with anyone but their closest friends," Sam Masiello, vice president of information security at MX Logic said last week in an interview. "It's not hard to crack [password resets] with the information you can find freely available on social networking sites."