Coupang hit with record $466M data breach fine over 37.5M users

South Korea's Personal Information Protection Commission fined Coupang 624.7 billion won (about $466 million) for a breach affecting 37.5 million people — nearly five times the country's previous record. The National Assembly summoned an executive to testify at an October 12, 2026 hearing.

• Fine of 624.7 billion won (~$466M) is nearly 5x South Korea's previous record
• Breach exposed data of 37.5 million people, including 33 million registered users
• Root cause: stolen authentication key and inadequate access controls
• Coupang appealed the fine and disclosed a $410M litigation reserve