A former SK Hynix employee has been sentenced to 18 months in prison after transferring classified CMOS sensor data to a Chinese firm, the Seoul High Court announced on Sunday. The ruling follows a lower‑court decision that found the defendant had taken trade secrets related to CMOS image sensors while employed at SK Hynix’s China‑based office in 2022.

According to the court, the accused removed sensitive information from the company’s internal server, printing or photographing the data before incorporating it into a résumé sent to an unnamed Chinese company. He pleaded guilty to all charges. The court noted that most of the material he stole was later recovered by SK Hynix.

CMOS image sensors are the backbone of smartphone and laptop cameras. They use complementary metal‑oxide‑semiconductor transistors to convert light into electrical signals, making their manufacturing processes highly valuable to semiconductor firms. Protecting these processes is therefore a top priority.

SK Hynix, one of the world’s largest memory‑chip producers, has warned that intellectual‑property theft from foreign competitors is a growing threat. The company’s security rules forbid the removal of classified data from internal servers, and the court’s findings confirm that the defendant violated those rules.

The Seoul High Court’s Criminal Division 10‑1, led by judges Lee Sang‑ho, Lee Jae‑shin, and Lee, upheld the lower‑court sentence on appeal. The judges emphasized that the defendant’s actions breached trade‑secret protection laws and could damage the company’s competitive position.

Industry observers point to the case as a reminder of the broader challenge of safeguarding proprietary technology across a global supply chain. As semiconductor firms operate in multiple countries and skilled workers move between locations, the risk of IP leakage rises.

While the court did not release a statement from SK Hynix, the company’s legal team confirmed that the stolen information was recovered and that internal investigations are ongoing. No changes to security protocols have been announced.

The ruling comes amid heightened scrutiny of technology transfers between South Korea and China. South Korean regulators have tightened export controls on advanced semiconductor equipment, and the government has urged firms to strengthen internal safeguards.

Following the sentencing, the defendant will serve his 18‑month term in a South Korean correctional facility. The court did not impose additional civil penalties or restitution, but it noted that the company may pursue civil remedies.

This case joins a series of legal actions against individuals who have transferred trade secrets from South Korean technology firms to foreign competitors. It underscores the legal consequences of violating robust security policies.

As the semiconductor industry evolves, companies are likely to increase investment in security measures and employee training to prevent similar incidents. The outcome of this case may influence how firms manage talent mobility and protect sensitive information.

The Seoul High Court’s decision is final, and no appeal has been announced. The case highlights the ongoing tension between global talent flows and the protection of intellectual property in the high‑tech sector.