Once it’s turned on, Facebook Messenger will send notifications to the Facebook app and also to your email for unrecognized login attempts.
Facebook Meta accounts centre allows you to manage all of your Facebook accounts, Messenger, and Instagram accounts in one place.
Facebook, Messenger, and Instagram have security features that let you see all the devices that are currently logged in to your accounts and their locations. Here’s how to log out all logged-in sessions.
Once you’ve performed this action, Facebook Messenger will log out all the devices you have selected.
You can also change your password after you’ve logged out other unrecognized devices.
If you’re concerned about the security of your account. Then you need to make sure that the log in alert feature is turned on for all your Facebook accounts.
Login alert, once enabled, can prevent unrecognized logins and safeguard your account.
Also, use a strong, unique password for your Facebook account and change it regularly.
Also, enabling two-factor authentication adds an extra layer of security by requiring a code from your phone when logging in from a new device or browser.
If you enable a login alert on your Messenger account, Facebook will send you notifications on both email and in-app.
Messenger is a platform that is linked to your Facebook. If someone has access to your Messenger, this also means they have access to your Facebook account.
You need to ensure that the device you’re using is listed under Authorized Logins. If it’s not there, click Save Device after logging in successfully.
Go to Accounts Centre »»» Password and Security »»» Password and security »»» Saved login »»» select account »»» Save Device/Login.
You’ll receive email and in-app notifications if someone logs into your account. Before you receive the notifications, you need to turn on the login alert.
Facebook will send you an email alert if you or someone else log in to your account from an unrecognized device.
FURTHER READING