Anonymous is claiming to have stolen 200GB worth of data, including e-mails and clients' credit card information, from a U.S. security think tank, the Associated Press reported early today.

The hacking group also used Twitter to post a link to a list of clients apparently belonging to think tank Stratfor.

"Not so private and secret anymore?" one of numerous tweets from AnonymousIRC read.

This morning Stratfor's site was down. A notice reads: "Site is currently undergoing maintenance."

Anonymous also tweeted that it has "enough targets lined up to extend the fun fun fun of LulzXmas throught the entire next week."

Stratfor apparently said in an e-mail to members that it had suspended its servers and e-mail following a hack.

"We have reason to believe that the names of our corporate subscribers have been posted on other web sites," said the e-mail, which was obtained by the Associated Press via subscribers. "We are diligently investigating the extent to which subscriber information may have been obtained."

Anonymous claims it was able to steal the credit card data because it was unencrypted.

"If Stratfor would give a s--- about their subscriber info they wouldn't store CC/CCV numbers in cleartext, with corresponding addresses," according to one tweet.

Stratfor's clients listed include the U.S. Army, U.S. Air Force, and Miami Police Department, the AP reported.

http://news.cnet.com/8301-1009_3-57348300-83/anonymous-claims-hack-on-security-think-tank/