This is not a late April Fool's joke: After #37C3, we accidentally dumped the keypad codes of almost half of an IBIS hotel's rooms by entering some dashes into a check-in terminal: https://www.pentagrid.ch/en/blog/ibis-hotel-check-in-terminal-keypad-code-leakage/ #itsecurity #infosec #ibis #accor #terminal #hotel