I know before I changed my security anyone looking for me or at a friends page could see mine. You do have to change it. You need to go into settings, privacy, profile and change everything to just friends. then if someone looks for you they just see your picture and it says you have to be friends to contact this person.
Me-53(and learning!) S24, S21, D18, D17 Just keep swimming, Just keep swimming. Dory