Last year, South Korea’s leading e-commerce platform announced a security incident that exposed information from tens of millions of customer profiles, initially seeming like a business setback. However, the situation has evolved into a significant international dispute, potentially worsening ties between Seoul and the current U.S. leadership.
The company, headquartered in Seattle, publicly traded in New York, and led by a Korean-American entrepreneur, reported in November that an ex-staff member took a security credential, allowing improper entry to records of 33.7 million individuals. This led to a mass exodus of users and a robust official reaction. Authorities conducted searches at the firm’s local offices, initiated a detailed financial review, and called leaders to testify before lawmakers.
The CEO declined to appear in person for sessions, referencing his international duties, prompting law enforcement to seek alerts on his potential arrival in the country. Media accounts indicate that Seoul’s firm stance might be straining bilateral connections, crucial for South Korea’s defense.
A local news outlet stated this week that the U.S. indicated it would halt advanced talks on diplomacy and military matters unless assurances were given that the executive faces no charges related to the incident. South Korea’s foreign affairs office did not refute the claim but emphasized that defense dialogues should remain distinct from the corporate probe, which will proceed according to national regulations. The American diplomatic mission in Seoul offered no statement.
The disagreement has impacted discussions on American assistance for South Korea’s nuclear submarine program, with reports of a delayed visit by U.S. officials. This matter adds to existing frictions under the present U.S. administration, including a September raid on a joint Korean manufacturing facility in Georgia that held over 300 workers, causing widespread anger. There have also been limitations on intelligence exchanges following a South Korean official’s disclosure of a possible North Korean atomic location, and threats of increased duties on imports from South Korea.
The firm allocated more than $3 million for advocacy efforts in the U.S. capital in 2025, accumulating over $11 million since 2021, based on records from a transparency organization. In early 2026, its advocacy budget doubled from the prior year, targeting high-level executive branches.
In January, the U.S. vice president addressed the issue during a visit by South Korea’s prime minister, wishing for an equitable resolution to prevent discord. On April 21, 54 Republican lawmakers sent a letter to South Korea’s envoy, alleging biased treatment of American-linked businesses and a comprehensive governmental campaign against the company over what they called a minor data exposure.
The reasons for strong support from Congress and parts of the administration remain uncertain. Five American investment groups with stakes in the firm initiated proceedings this year to seek resolution against South Korea via the bilateral trade pact, arguing the regulatory measures were excessive relative to cases with domestic entities. The process continues.
An international relations expert at a Seoul university noted that the core concern is not South Korea’s authority to oversee operations within its borders, but how these steps are viewed and politicized in the partnership. The U.S. leadership’s approach of merging economic and security topics into deals means such conflicts could affect previously protected areas like atomic collaboration, technology transfers, or military acquisitions. He warned that the alliance might be nearing a point of serious pressure.
