The importance of protecting your business from security threats is clear. But how to do it well often remains a vexing problem. Major IT vendors have faced this challenge like everyone else — but with a twist. As providers of security technology and IT systems vulnerable to threats, they've had to stay a step ahead of everyone else. That's why CIOs of technology stalwarts IBM and Intel and security technology provider Symantec have taken on security management as one of their key functions. All three companies have shared their lessons learned with InfoWorld.