A presentation called “The Holy Grail: Cisco IOS Shellcode Remote Execution” was slated to run at the Black Hat conference in Las Vegas this week. But Internet Information Systems and Cisco, the companies presenting the segment, decided to pull the presentation after discussions between the two firms.

As noted in my previous meme, Lynn did wind up giving his talk. Although he had to resign from ISS to do so.

According to Jeff Moss, CEO of the Black Hat Conference, Cisco on Monday said it would go to court for a restraining order to stop Black Hat from distributing materials on the IOS presentation already submitted by ISS and Cisco and published in the 1,000-page conference program. Moss said that Cisco supplied personnel, with razorblades in hand, to cut out 15 pages of material from 2,500 Black Hat conference show guides that detailed the company’s research.

No word if Cisco or ISS is going to attempt any legal action against Lynn.

According to a rumor circulating at the conference this week, the U.S. Department of Homeland Security was involved in asking Cisco and ISS to change its findings for security reasons. Cisco and ISS deny DHS involvement.

"Several agencies" have been in contact with Lynn regarding his research.

Network World | Cisco nixes conference session on hacking IOS router code