Knownsec is a Chinese information security firm known for security research and related services.
Overview
Knownsec is a Chinese information security firm known for security research and related services. A data breach reported on 2025-11-09 reportedly exposes its internal offensive tools, described as a 'weapons arsenal,' highlighting potential risks to clients and the cybersecurity supply chain.
Related Threat Clusters
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Data Breach at Knownsec Exposes Cyber Weapons and Tools
A data breach at the Chinese infosec firm Knownsec has resulted in the leak of over 12,000 classified documents. The leaked information includes details on state-owned cyber weapons, internal tools, and global target…
2 articles · Updated November 9, 2025 -
Five Plead Guilty in North Korean IT Worker Fraud Scheme
Five individuals have pleaded guilty to facilitating North Korean operatives in obtaining remote IT jobs at U.S. companies by using false and stolen identities. The U.S. Department of Justice has also seized $15 million…
39 articles · Updated November 17, 2025 -
Data Breach Exposes 12,000 Documents from Chinese Firm Knownsec
A significant data breach at the Chinese cybersecurity firm Knownsec has resulted in the leak of over 12,000 classified documents, revealing sensitive information about state-sponsored cyber weapons and espionage…
5 articles · Updated November 17, 2025
Recent Intelligence Reports
- Cybersecurity breach exposes Chinese firm Knownsec's government — Scworld · November 17, 2025
- Risky Bulletin: Another Chinese security firm has its data leaked — News.Risky.Biz · November 12, 2025
- Data breach at Chinese infosec firm reveals weapons arsenal — Theregister · November 9, 2025
- Data breach at Chinese infosec firm reveals cyber — Theregister · November 9, 2025