TET is charged with overseeing that the Danish Security and Intelligence Service (DSIS), the Danish Defence Intelligence Service (DDIS), and The Centre for Cyber Security (CFCS) process information about persons in compliance with the legislation regarding DSIS, DDIS, and CFCS. TET further oversees compliance with the provisions of the PNR Act on procurement of information, internal processing of information, include unmasking, and disclosure of information when the PNR Unit of the Danish Police procures, processes and discloses information on behalf of DSIS.