GoldenEyeDog Subgroup Linked to DigiCert Breach and Code-Signing Certificate Theft

Cybersecurity researchers have attributed the April 2026 DigiCert security incident to a threat activity cluster dubbed CylindricalCanine. Expel, which shared technical details of the event, described the threat actor as a sub-group of GoldenEyeDog aka APT-Q-27, Dragon Breath, and Miuuti Group, a...

Chinese Hackers Weaponize Open-Source Nezha Tool in New Attack Wave

Threat actors with suspected ties to China have turned a legitimate open-source monitoring tool called Nezha into an attack weapon, using it to deliver a known malware called Gh0st RAT to targets. The activity, observed by cybersecurity company Huntress in August 2025, is characterized by the use...