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Ripple effect from Cisco Router Presentation

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Cisco and Internet Security Systems (ISS) are taking action against websites that provide too much detail about a presentation that security expert Michael Lynn gave on Wednesday at the Black Hat security conference about a vulnerability in Cisco's IOS operating system.

Lawyers for ISS have sent a cease and desist order to the internet provider where Richard Forno of posted a PDF document containing the slides of Lynn's presentation.

"My ISP has been contacted by attorneys," Forno told at 4 PM on Friday. "I'm waiting to see the legal document."

Later that day he removed the document from his website and replaced it with a fax from an ISS attorney, demanding that he took the document offline.

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The FBI is investigating a computer security researcher for criminal conduct after he revealed that critical routers supporting the internet and many networks have a serious software flaw that could allow someone to crash or take control of them.

Mike Lynn, a former researcher at Internet Security Systems, said he was tipped off late Thursday night that the FBI was investigating him for violating trade secrets belonging to his former employer, ISS.

The FBI declined to discuss the case. But Lynn's lawyer, Jennifer Granick, confirmed that the FBI told her it was investigating her client.

"The investigation has to do with the presentation," she said, "but what crime that could possibly be is unknown because they haven’t found any (evidence against him)."

"There's no arrest warrant for (Lynn) and there are no charges filed and no case pending," Granick said. "There may never be. But they got a complaint and as a result they were doing some investigation."

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