6. Member States shall lay down specific rules and procedures for the exercise of the powers pursuant to paragraphs 1, 2 and 3 and shall ensure that any exercise of those powers is subject to adequate safeguards laid down in the applicable national law in compliance with the Charter and with the general principles of Union law. In particular, those measures shall only be taken in accordance with the right to respect for private life and the rights of defence, including the rights to be heard and of access to the file, and subject to the right to an effective judicial remedy of all affected parties.