It appears as though you can hardly trust anyone anymore. There are burglars who pretend to be law enforcement officers who study your home for security weak points. There are kidnappers who pretend to bring their dog on a stroll coincidentally passing your front lawn while actively observing the day to day activities of your children. Also, there are identity thieves that snoop for your mail inside your mailbox. This is not the cause of an overactive imagination but stark reality.