Following up on some of the planned security improvements I discussed earlier, the backend now uses a new, more secure password hashing system (Blowfish with random salt).
In order to upgrade your account password hash, simply login normally to the website or in-game (anywhere you normally type your username & password). If you normally use Steam auto-login, you'll want to login via the website one time in order for your password hash to be upgraded to the new format.
Both 8BitMMO and 9BitMMO have been updated to support the new system.
As always, please let me know if you spot any new bugs as a result of this change.