In partnership with the hacking collective Anonymous, WikiLeaks said Monday that it had published about 5 million e-mails taken from the private intelligence firm Stratfor. The e-mails, which members of Anonymous claim to have obtained in December, date from July 2004 to December 2011, according to a press release from WikiLeaks.

The group claims the e-mails reveal information about what it called the U.S. government’s “attacks” on Wikileaks and its founder, Julian Assange. The documents are also said to reveal a great deal about how Stratfor, an analysis firm based in Austin, Tex., runs its business. The firm provides geopolitical analysis to corporate and government clients.

In an interview with Wired, members of Anonymous said that they wanted to work with Wikileaks because that group has a better relationship with the mainstream media.

“WikiLeaks has great means to publish and disclose,” one member of Anonymous told the magazine.

In December, Stratfor warned its clients that its servers had been hacked after members of Anonymous released the personal information of several of the firm’s subscribers. Stratfor has said that it is working with the FBI to investigate the attack, which the firm has called an “attempt to silence the company.”

In a statement, the company said that it would “not be victimized twice by submitting to questioning” about the published e-mails but that it’s possible that the messages may be “forged or altered.”

The company also said that, contrary to Internet reports, chief executive officer George Friedman had not stepped down.

WikiLeaks said that it has worked with more than 25 media partners to analyze the documents, including Rolling Stone and McClatchy in the Unites States.

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