We implemented the following safeguards for now:-

If the password has not been changed after the exposure, the login process
checks if you are connecting from a network you have previously logged in
from, and if yes, it lets the player in and forces a password change.

If you are connecting from a different network, it won't let you in. Please
try to either connect from the network you have previously connected from, or
contact the administration to change your password.

We may improve/modify these checks, possibly by adding GeoIP functionality to
check the country you are connecting from, and limit it to that.

Any abuses of the leaked passwords will be given to law enforcement
authorities to process, and abusers will get consequences of any hacking and
misuse.