Legislation Below, you can read the applicable legislation that regulates the activities of DSIS, DDIS, and the PNR Unit, as well as TET’s review of these. Shortcuts to Retsinformation Lov om PET PET-bekendtgørelse Sikkerhedsbekendtgørelsen vedrørende PET Lov om FE Sikkerhedsbekendtgørelsen vedrørende FE PNR-loven PNR-bekendtgørelsen About DSIS and DDIS DSIS DSIS is Denmark’s national intelligence and security authority. DSIS falls under the Ministry of Justice. You can read more about DSIS on the service’s website here. DDIS DDIS is Denmark’s foreign and military intelligence service, as well as the military and cybersecurity service. DDIS falls under the Ministry of Defence. You can read more about DDIS on the service’s website here.