Cisco CEO: Protecting companies against hackers Summary: At the RSA Conference in San Francisco, Cisco CEO John Chambers discusses how physical and IT security are one and the same. The architecture must be tied together to form a balanced resolution. April 23, 2009 -- 15:45 GMT (08:45 PDT) Loading... Please wait. Topics: Cisco, CXO, Security Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.