A method for the secure transfer of a digital file from a first computerized system to one second computerized system, the method comprising the following steps: writing the digital file on a first file-management module of a secure transfer device, transferring the digital file to an internal verification module of the secure transfer device, verifying one portion of the transferred digital file in the verification module, and transferring the partially verified digital file to a second file-management module of the secure transfer device according to the result of the verification, in order to allow the file to be read by the one second computerized system according to the result of the verification.