Cisco, ISS file suit against rogue researcher | The Register

"LAS VEGAS--Networking giant Cisco and security company Internet Security Systems filed on Wednesday a restraining order against the management of the Black Hat Conference and a security expert who told conference attendees that attackers can broadly compromise Cisco routers.

The legal action followed a presentation by security researcher Michael Lynn, a former ISS employee, who brushed off threats of legal action and a broad effort to delete his presentation from conference materials to warn attendees that malicious programs could be run on Cisco routers."