(181)
To this end, this Decision should be subject to a first review within two years after its entry into force. Following that first review, and depending on its outcome, the Commission will decide in close consultation with the Committee established under Article 93(1) of the GDPR whether the two-year-cycle should be maintained. In any case, the subsequent reviews should take place at least every four years (151). The review should cover all aspects of the functioning of this Decision, and in particular the application of the Supplementary Rules (with special attention paid to protections afforded in case of onward transfers), the application of the rules on consent, including in case of withdrawal, the effectiveness of the exercise of individual rights, as well as the limitations and safeguards with respect to government access, including the redress mechanism as set out in Annex II to this Decision. It should also cover the effectiveness of oversight and enforcement, as regards the rules applicable to both PIHBOs and in the area of criminal law enforcement and national security.