Growing concern over security threats has increased demand for specialists in IT security, and forced up salaries by up to 25 percent over the last year in the United Kingdom.
Israel's airline El Al has replaced all its intrusion detection systems with intrusion prevention appliances - a move it says has cut the threat of worm and denial-of-service attacks.
Vulnerability management company Qualys has been adopted by IBM Global Services as its standard service for tracking and fixing vulnerabilities in its customers' networks.
The rapid growth in use of the free Skype voice-over-IP service could open up companies to severe security breaches, vendors warned at the RSA Conference.