There are a few things you can do to protect yourself from bump keys. First, make sure your door is properly installed and that the strike plate is aligned correctly. This will help to prevent the key from being able to enter the lock. Second, use a deadbolt in addition to your regular locks. Deadbolts are much more difficult to pick and bump, so they provide an extra layer of security. Finally, keep your keys safe and secure. Don't leave them lying around where someone could find them, and consider investing in a key safe or similar device. By taking these simple precautions, you can help to ensure that your home is safe from bump keys and other forms of lock picking.