Data Protection and Privacy 2026

SOUTH KOREA Trends and Developments

Trends and Developments Contributed by: Hwan Kyoung Ko, Sunghee Chae, Kyung Min Son and Matt Younghoon Mok Lee & Ko

Lee & Ko was established in 1977 and has evolved into a leading full-service law firm in South Korea, recognised for its excellence across various legal do - mains. Lee & Ko is known for delivering timely, prac - tical solutions in complex legal matters. The firm’s in-house resources include attorneys, accountants, patent agents, former government officials and other specialists, ensuring that clients can access a wide

range of services cost-effectively. Further, Lee & Ko maintains an extensive global network and collabo - rates with international law firms. This allows the firm to assist clients not only with Korean legal matters but also with cross-border transactions by connect - ing to legal advisers worldwide, making the firm a sought-after choice for clients requiring comprehen - sive and efficient legal assistance.

Authors

Hwan Kyoung Ko is a partner at Lee & Ko and heads the data privacy and cybersecurity team, the tech and AI team, and the platform regulation response team. He is widely recognised as a leading expert in data

Kyung Min Son joined Lee & Ko in 2011 and has since specialised in data protection and privacy law, advising domestic and international IT companies and financial institutions on a wide range of personal

protection and cybersecurity in Korea. He has advised major domestic and global companies on high-profile data breach investigations, regulatory proceedings and enterprise-wide data governance projects. He also advised on amendments to the Personal Information Protection Act and the Credit Information Act. Mr Ko serves as Vice-Chairman of the Korea Personal Information Protection Law Association, and is a member of several government AI and data policy committees.

information matters. He represents clients in investigations by the Personal Information Protection Commission, and handles administrative sanctions and related litigation. He also advises on data breaches, cybersecurity incidents and data subject rights issues. Mr Son has extensive experience in leading data protection compliance projects and providing regulatory consulting. His practice further includes advising on data protection issues in M&A transactions, location-based services regulation, and healthcare data matters.

Sunghee Chae has focused her practice at Lee & Ko on privacy and data protection since 2016. She advises Korean and multinational clients across the technology, finance, healthcare, manufacturing and

Matt Younghoon Mok is a senior foreign attorney in Lee & Ko’s TMT group, where he focuses on data privacy, cybersecurity, artificial intelligence, and emerging technology regulations. His expertise spans

mobility sectors on complex regulatory and data governance matters. Her experience includes developing and implementing global privacy compliance programmes and cross-border data transfer strategies, as well as addressing data protection issues related to digital services and emerging technologies. She also counsels clients on regulatory investigations, data security incidents, workforce privacy and evolving cybersecurity compliance requirements.

cryptocurrency compliance, blockchain technology and cross-border transactions. In addition to his technical focus, Mr Mok has significant experience in advising on corporate matters, including M&A, joint ventures and other transactional work. He is admitted to practice in the District of Columbia.

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