A ransomware claim targets Yulkok Ltd in South Korea, attributed to the threat actor βbeastβ. Yulkok Ltd is a major global player in aerospace manufacturing, specializing in 5-axis CNC machining and fuselage component assembly, with partnerships including Boeing, Airbus, and Korea Aerospace Industries on programs such as the T-50 and FA-50. #SouthKorea
Incident Details
- Victim: Yulkok Ltd
- Sector: Not Found
- Country: KR
- Actor: beast
- Source: http://beast6azu4f7fxjakiayhnssybibsgjnmy77a6duufqw5afjzfjhzuqd.onion/card/yulkok_ltd
- Discovered: 2026-02-05 16:20:39.500325
- Published: 2026-02-05 00:00:00.000000
Information
- Yulkok Ltd β major global aerospace supplier based in South Korea
- Headquartered in Changwon; founded in 1990
- Operations: manufacturing high-precision parts and assemblies for the aerospace industry
- Specialization: 5-axis CNC metal machining and fuselage component assembly
- Partners include Boeing, Airbus, and Korea Aerospace Industries (KAI); supplies components for military aircraft such as the T-50 and FA-50
- Ransomware actor: beast

Disclaimer: This post is based on public claims made by the ransomware group "beast". I cannot confirm the accuracy of the information. However, I would be happy to share any official statement from the affected organization to provide clarification.