Not much is scarier than a home invasion. Except for maybe the door-to-door home security system salespeople preying on this fear. They start their pitch about updating your current system. In actuality they are luring you into new contracts with a different company. If they show up at your door, you should contact your current company and verify that they sent someone out to your house. Nest, don’t feel pressured to sign any contracts on the spot. If they won’t take no for an answer, contact your local police and file a complaint with your BBB.