its happens more then u think.
Even with a bank pin your account still ain't 100% safe a hacker can still have the ability to take some items from your account via your presets with ain't protected via a bank pin. The only way to stop this is not to have saved presets.
so adding maybe a account pin for when u log in untill u enter the pin the account will not be able to move/trade or interact with anything making your account alot safer.
this is a suggestion and possibly a feature that should be added to make people feel alot safer on the game.