Do you have a wireless home security system? I like them, but I'm not so sure I suggest them over a traditional security system. However, if you do choose to keep a wired security system in your home, then you need to be sure that the wires aren't exposed.
As you can imagine, exposed wires are targets for people that break into a home. They will always be on the lookout for how they can compromise your home's security. If you have an existing system, then you need to see if there needs to be any upgrades performed, and if you're having one installed, well, secure those wires.