Supervision, Guidance & International Affairs
Our Department
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Our team
Cian O'Brien
Cian O'Brien was appointed Deputy Commissioner in May 2022, in a role that centres on all large-scale Data Protection Commission inquiries and investigations. Since joining the organisation in 2019, Cian’s roles in the DPC have included Legal Researcher and Senior Regulatory Lawyer. During this time, he was responsible for providing legal advice and assistance on large scale inquiries and investigations concerning both cross-border and domestic matters. Cian also acted as an advisor to the Inquiries Committee and oversaw and implemented the DPC’s process for confirming administrative fines in Court, as provided for in the Data Protection Act 2018. He graduated from University College Dublin and the Kings Inns Dublin. Cian was called to the Bar of Ireland in 2014. He practised law as a Barrister and tutored European Union law before joining the Data Protection Commission.
In his current role he has responsibility for the following at the DPC:
- Large Scale Inquiries
- Investigations