Facebook’s new Graph Search feature is rolling out in a very limited beta to select users. Users will have the chance to tweak a few things to ensure that our dirty laundry isn’t so easily accessible. To stop friends of friends from seeking you out, limit who can search for you in Facebook. To check out your Activity Log and make sure you’re happy about all those photos your friends have shared you in, the likes you’ve checked in, and tagged you in. To limit past posts, you’ll need to limit the audience for old posts on your timeline.”]
Source: https://gizmodo.com/3-privacy-settings-you-must-change-before-using-faceboo-5976253