North Korean Hacker Group Exposed: Massive Data Breach Reveals Weaponized Tools and Targets

A suspected data breach involving a major North Korean hacking group, known as Kimsuky, has exposed hundreds of gigabytes of internal files and tools used by the cybercriminal organization. The leak reportedly occurred in early June 2025, targeting two compromised systems linked to a hacker member under the alias “KIM.” These systems housed sensitive data including browser histories, phishing campaign logs, custom backdoor manuals, and offensive malware like the TomCat kernel backdoor, modified Cobalt Strike beacons, Ivanti RootRot, and Android-based malware variants. 🕵️‍♂️