North Korean hacking group APT37 was seen deploying new implants, backdoors, and other tools in attacks targeting air-gapped ...

IntroductionThreat actors often take advantage of major global events to fuel interest in their malicious activities. Zscaler ...

Researchers link Silver Dragon APT to APT41 after attacks on government entities using Cobalt Strike, DNS tunneling, and ...

IntroductionIn December 2025, Zscaler ThreatLabz discovered a campaign linked to APT37 (also known as ScarCruft, Ruby Sleet, and Velvet Chollima), which is a DPRK-backed threat group. In this campaign ...

Researchers have discovered a new ransomware variant that they say has significantly different behavior and characteristics than most other ransomware types. The ransomware, called PwndLocker, was ...