Recently, several Wikipedia admin accounts were compromised. The admin accounts were desysopped on an emergency basis. In the past, the Committee often resysopped admin accounts as a matter of course once the admin was back in control of their account. The committee has updated its guidelines. Admins may now be required to undergo a fresh Request for Adminship (RfA) after losing control of their account.
What do I need to do?
Only to follow the instructions in this message.
Check that your password is unique (not reused across sites).
Check that your password is strong (not simple or guessable).
Enable Two-factor authentication (2FA), if you can, to create a second hurdle for attackers.
How can I find out more about two-factor authentication (2FA)?