Symantec (makers of Norton AV software), who should know, says that antivirus software catches only 45% of cyberattacks. So the battle then becomes one of mitigation: how do you limit the damage after the bad guys get in? Why should you care? Ask the former CEO of Target.
“Thwarting Hackers After They Invade,” Wall Street Journal, May 5, 2014 B1 http://on.wsj.com/1lTAacb
What steps do/should you take to monitor and prevent theft of information inside your perimeter defenses?