Cisco on security: It's a network thing Summary: At RSA Conference 2005 in San Francisco, Cisco CEO John Chambers speaks to an audience about the importance of the network in dealing with security threats. February 16, 2005 -- 21:41 GMT (13:41 PST) Loading... Please wait. Topics: Cisco, Networking, Security Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.