South Korea fines Coupang $409 million in country’s largest data breach penalty

South Korea will fine e-commerce giant Coupang 625 billion won ($409.30 million) over a massive leak ​of customer information last year and ​illegal collection of personal information, in the country’s largest data breach penalty on ​a company.

The Personal Information Protection Commission said the New York-listed company had leaked personal data of more than 33 million customers and failed to detect the breach within the 72 hours required by the law.

The fine amounts to 1.4% ‌of Coupang’s revenue ⁠of 45 ⁠trillion won in 2025, according to Reuters’ calculation.