I have read that you are having concerns about the lack of secondary password of the Steam Client. For this matter, please be informed that Steam does have additional security in which you must use to access your account. Your steam created account cannot be accessed as long as your Steam Account is safe, therefore there is no need to have the secondary password on it. I hope for your utmost understanding about this matter, and if you need anything else, please feel free to let us know.
PS: No corruption n thief in SEA forever ever after