You can view and manage the active sessions on your account to make sure only devices you trust have access.
Here’s how to manage your active sessions:
From your home feed, click your profile icon in the bottom-left corner and select Account.
Click Edit next to the Sessions option.
All active sessions linked to your account will appear here, so you can review the devices currently signed in and the timestamps of when the session was trusted.
You can have up to 5 active login sessions at once. If you sign in on a 6th device, the oldest session will be logged out automatically.
If you don't recognize a device or want to remove a specific session, click the "X" icon next to the session you want to remove.
Click Done to save your changes.