Many regard LinkedIn as the "safe" social network, there are no games that jeopardise your privacy, you aren't posting incriminating photos of last weekend's Halloween party and you're not TKTKTKTK. But that's no reason to ignore the privacy and account settings that LinkedIn has in place.
You can find your list of settings by clicking on your name on the top right of the screen and choosing Settings. This list includes profile settings, email notifications, home page settings, personal information, privacy settings and more.