The accessibility of the data, thanks to Safetica is under your control only. When you press WIN-CTRL-U you deny the access to your data and the system behaves as if there is no such data! The existence of such data can be denied at any time and no one can proof the contrary! So You should not worry that, in case of theft, your data will be in danger. In case the computer is turned off, the access to your data is automatically denied for everyone.