Most of the time Facebook, Linked-In and other accounts seem like benign tools – until they get hacked. Both named services offer Multi-Factor Authentication to help keep your accounts under your control.
On Facebook, you can review and kill the Authorized Logins to your account and even get special App Passwords for use on your phone, devices, and websites.
Consider what you make public. It will be added to the information obtained in the many 3rd party breaches that happen yearly. Also consider identity monitoring services. It’s time. They are necessary.