Security

The thing about security is that the very things that protect you can be turned against you by someone who knows what he's doing. It's tough to compromise a well thought-out security system, but making someone think you can compromise it, well, that's much easier. Take surveillance cameras, for example: you can disable one by shooting a laser at it and overloading the light sensitive chip. Cheap, easy, and exactly the sort of thing a sophisticated criminal gang with lots of resources would do. Leave around some tell-tale signs of surveillance like cigarette butts, a forgotten camera lens cap and the more security there is, the more likely they are to think they've got a very serious problem. Even the security team itself can be an opportunity. The more employees you have, the more you have to worry about them. Deliver some vague threats and a few hundred bucks to a security guard. If he's honest he'll tell his boss, who then wonders who wasn't so honest. For the cost of a nice dinner you can get a whole security team canned.