It is quite possible to put checks on the power of a domestic intelligence agency in order to prevent abuse of authority. An important way, in which individual citizens can actually control the intelligence service, is through lodging an information request at the domestic intelligence service. In a democracy, the service is obliged to share if it has a dossier on that citizen, and if it’s unfounded, can request the deletion of it. Of course, the dossier will not include specific intelligence gathering methods used nor mention sources, but overall, it will provide a good picture of what the intelligence service has been investigating so far.