Anyone who considers that their rights have been infringed in the course of intelligence activities or such operations have otherwise broken the law can file a complaint to the Intelligence Ombudsman in matters falling under the Ombudsman's powers of oversight.
The Intelligence Ombudsman can only investigate complaints about activities falling under the Ombudsman's authority of oversight. The Intelligence Ombudsman supervises the intelligence activities of the Finnish Security and Intelligence Service and the military intelligence authorities as well as the other operations of the Finnish Security and Intelligence Service. The processing of personal data by the Finnish Security and Intelligence Service and the military intelligence authorities is supervised by the Data Protection Ombudsman. If the activities subject to the complaint are not related to intelligence activities, the complaint should possibly be addressed to another authority instead, such as the Parliamentary Ombudsman.
A person subjected to intelligence gathering or who suspects that they have been subjected to intelligence gathering can ask the Intelligence Ombudsman to investigate the lawfulness of the use of such methods.