apart from what NotFuzzyWarm said, if you want your account not to be accessed by anyone(including you) you can lock it by going through the "forget password" and using the "secret question" to change the password, if you use it your account will be locked.
It was stopped since 2015 forum server hack.
You should assume that the following information about your account was leaked:
- Secret question and a basic (not brute-force-resistant) hash of your secret answer
After that, if you click on secret question change, your account will be locked.