There is one thing you should know about keeping your home safe while you're away. Former CIA officer Jason Hanson says that homeowners often leave their front porch light on when they go on vacation, thinking they can trick criminals into believing they're home. This is a mistake. What you should do instead is buy a large dog bowl and place this by your back door. The reasoning is that criminals are searching for the easiest target -- they'll go for the home next door that doesn't have a big dog.