Ms Cecilia Siu is the Assistant Privacy Commissioner for Personal Data (Legal, Global Affairs and Research) of the PCPD. She oversees the Legal Division and the Global Affairs and Research Division of the PCPD, which provide legal support to all facets of the PCPD’s daily operations, advise on the amendment of the Personal Data (Privacy) Ordinance, furnish comments to stakeholders on privacy initiatives and technological developments from the perspective of personal data privacy protection, and provide policy advice having regard to the international privacy landscape.

Ms Siu was admitted as a solicitor in both Hong Kong and England and Wales. She joined the PCPD in 2022. Prior to joining the PCPD, she held the position of Senior Assistant Law Officer (Civil Law) in the Department of Justice.