I don't worry about it, I'm very careful about what sites I belong to and how much info on myself I'm willing to give up. I never put in my full address or martial status or anything about my DH because of the work he does. When I upload a photo of my family I control the access permissions to the photos.
The house is secure with big dog that really is an angel he just doesn't like the door bell or someone knocking and then he barks, and an alarm system so I'm not too concerned there. I don't answer phone numbers I don't recognize or open the door to someone I don't know.