If there has been an unauthorized withdrawal from your account it is most likely that you have been phished, please refer to this thread for info on phishing scams: https://dkn255hz262ypmii.onion.to/index.php?topic=130446.0 Have you recently opened an account on Atlantis using the same credentials as your Sr account by any chance? Also withdrawal btc addresses are hidden from your transaction history for security reasons, you will need to contact SR support via the market site to request they look into the matter further, instructions on how to do this are in the FAQ sticky thread at the top of this board.