On Friday, a group of hackers operating under the banner of Anonymous' Operation AntiSec published the private e-mails of a California Department of Justice investigator. The hackers posted the entirety of the 38,000 e-mails in a Gmail account that appears to belong to Alfredo "Fred" Baclagan, a California Department of Justice special agent supervisor in charge of computer crime investigations, to a hidden site on Tor, as well as to a torrent listed on The Pirate Bay. They also posted what they claim is Baclagan's personal address and phone number.

The effort is part of an ongoing attack on law enforcement as part of a response to law enforcement's activities surrounding the Occupy Wall Street protests. Operation AntiSec began as a "joint" effort between Anonymous and LulzSec in June as a protest against government monitoring and censorship of the Internet. The targeting of the FBI and other law enforcement increased after the July arrest of alleged LulzSec members for denial of service attacks on Visa over cutting off payment processing for Wikileaks.

Update: In a Twitter message to Ars Technica, Anonymous member @AnonyOps said that the attacks on law enforcement members "also has to do w/ FBI's targeting of anons, re: imprisoned during opPayback and others." Operation Payback included the distributed denial of service attack on Visa, Mastercard and PayPal after the companies bowed to political pressure and cut off contribution processing to Wikileaks.

The e-mails included a substantial number of posts from the archives of the International Association of Computer Investigative Specialists' private discussion list, where investigators discussed computer forensic methods. A series of e-mails posted by Anonymous include the reaction of IACIS members to a teaser post of threads from the list to the Twitter account of Sabu, a well-known Anonymous hacker, and an e-mail from Baclagan's hacked Google account rickrolling the list. The IACIS site is currently down for maintenance, apparently as a result of the disclosures.

In a Pastebin post, Anons claimed to also have listened to Baclagan's personal voicemails and accessed his SMS logs, as well as his personal Google Voice account—which they say they used to text and call his friends and family.

"We lulzed as we listened to angry voicemails from his estranged wives and ex-girlfriends while also reading his conversations with girls who responded to his 'man seeking woman' craigslist ads," the hackers wrote in their post.