A Playstation 3 hacker says he has released information about reverse engineering hypervisor technology used in the PS3 after his home in Germany was raided earlier this week, reportedly at Sony's request.

In a comment to a post on his PS3 Linux and Hyper Reverse Engineering Blog, Graf-chokolo writes in the comments section: "Guys, SONY was today at my home with police and got all my stuff and accounts. So be careful from now on."

After several readers expressed doubt about the legitimacy of the post, he says in another comment: "Guys, I don't joke, it's serious. And to prove it, I kept my word and uploaded all my HV reversing stuff. Upload it everywhere so SONY couldn't remove it easily. Grab it guys, it contains lots of knowledge about HV and HV procs."

He writes: "Here is my HV bible" and provides four links to sites where he placed his files. As of this afternoon, the files had been removed from three of the sites, with one of the sites citing a copyright complaint.

Sony did not immediately respond to an e-mail request for comment, but gaming news site Kotaku reported that a representative from Sony Computer Entertainment Europe had confirmed the raid.

Sony is taking aggressive action against PS3 hackers. Last month, Sony requested a restraining order against George Hotz for releasing a jailbreak for firmware version 3.55 that allowed people to run home brew applications on the console. Sony says the action violates the Digital Millennium Copyright Act and the Computer Fraud Abuse Act, but Hotz disagrees. Game consoles are not mentioned in the DMCA. A U.S. District Court ruled in Sony's favor, granting a temporary restraining order.