XDDD This is update??? xDDDD omfg... i dont believe this xdddd, change password, where is update?xddddd
since english isnt your first language it seems, let me be clear.
The word update does not always mean software update.
Update could just mean a person giving you new information on what to do. Aka "Keeping you up-to-date".
So Superman here is just saying it would be wise atm for your own safety to change your password, thereby keeping you up-to-date.