Step 1 : Your posts
Switch from Public to Friends
Step 2 : Your Apps
Switch from Public to Friends / Only me
Step 3 : Your contact info.
Switch from Public to Friends / Only me
Check the result on your Timeline
To see what your timeline looks like from a Public / or a friend’s
view
Only accept people you know as friends or ask you these questions before accepting someone:
Do you know the Requester or have any friends in common with them?
Is the friend request from an attractive person of the opposite sex?
Does the request come from a person with a very limited facebook history?
Does the person have a unusually small or large number o friends?
Twitter Privacy settings
Go to twitter.com/settings or click on your profile picture (next to the search bar)