Hyundai Group's offices in Seoul were evacuated on December 20, 2025, following a Bitcoin ransom threat. The threat, delivered via email, demanded 13 Bitcoin (approximately $1.1 million) and warned of explosions if the ransom was not paid. Authorities conducted thorough searches of multiple buildings but found no explosives. Hyundai has refused to comply with the ransom demand. This incident is part of a series of similar threats targeting major South Korean companies, including Samsung, KT, Kakao, and Naver. Investigators are currently working to trace the origin of the email and are analyzing blockchain data to identify the perpetrators.