Denied,
There's no point for them to change your password if they can access your account, they can directly transfer the money
from it to their account or do what ever they want. In fact, if they change your account's password, it will make you aware of the account break and report it to admin or maybe admins will notice it when you ask them to reset your password. If you are playing at cyber cafe, dont turn auto-login on, improvement in /changepass will not make your account any more secure if you dont stop them from accessing it in the first place.
Anyway, we save log of each transaction made by player( from buying stuff to transferring money ) so it's stupid to break into other players's account to get money because we can trace all the money back.