The most secure Data Centers I’ve seen utilize electronic access cards of some type that have a good reporting mechanism, right down to which door. Of course, these systems don’t do you a bit of good if no one looks at the logs, but that seems to be the exception, rather than the rule. Thank goodness!
I’ve seen some systems that you must swipe in order to exit, as well as enter. This seems a smart way to make sure employees and cards are being utilized properly. Also, doors should alarm if they are propped open or not quite secured. Depends on how much you value your data, doesn’t it?
Camera systems can be a very good alternative to swipe cards, but ONLY if you have sufficient coverage of the area you’re trying to secure. I tested a system that could see me going up the steps to the Data Center, but didn’t capture me until I was two feet from the door. If I scuttled sideways to the right, it missed me entirely! We adjusted that camera together.
Does your system overlap all areas inside the Data Center? Can you track where someone goes throughout the area?
Finally, is your camera system secured away from the Data Center? Make sure only specific people have access, and make sure the captures are stored securely. How long should you keep them? I’d say a year, which would give you a good period of time to track back possible miscreants. But it really depends on your storage space. If you can use WORM (Write Once, Read Many) storage, even better.
Ultimately, it does come down to your employees. I can’t tell you how many times I’ve slid in the door behind someone holding an armful of books and thanking them for holding the door. If someone strange is sitting in the conference room, it could be me hacking your network. Just ’cause I’m a lady dressed in a really nice business suit doesn’t mean a thing.
How are you disposing of your physical computer equipment? Never underestimate the ability of people to be lazy and just “toss” stuff. Find a way to securely wipe your data OR transfer the risk by hiring someone that will give you a certified receipt that THEY have destroyed it for you. Expensive? Probably? More expensive? Getting your company’s name in the paper.