HeartCrypt’s wholesale impersonation effort
How the notorious Packer-as-a-Service operation built itself into a hydra
How the notorious Packer-as-a-Service operation built itself into a hydra
The UNC-200 threat group, active since last summer, has been utilizing the Signal messaging app to social engineer targets into downloading an infostealing remote access Trojan.
Sophos and SonicWall have alerted users of critical security flaws in Sophos Firewall and Secure Mobile Access (SMA) 100 Series appliances that could be exploited to achieve remote code execution. The two vulnerabilities impacting Sophos Firewall are listed below – CVE-2025-6704 (CVSS score: 9.8) – An arbitrary file writing vulnerability in the Secure PDF eXchange…
Cybersecurity researchers have discovered two new malware families, including a modular Apple macOS backdoor called CHILLYHELL and a Go-based remote access trojan (RAT) named ZynorRAT that can target both Windows and Linux systems. According to an analysis from Jamf Threat Labs, ChillyHell is written in C++ and is developed for Intel architectures. CHILLYHELL is the…
A suspected cyber espionage activity cluster that was previously found targeting global government and private sector organizations spanning Africa, Asia, North America, South America, and Oceania has been assessed to be a Chinese state-sponsored threat actor. Recorded Future, which was tracking the activity under the moniker TAG-100, has now graduated it to a hacking group…
Canadian organizations have emerged as the focus of a targeted cyber campaign orchestrated by a threat activity cluster known as STAC6565. Cybersecurity company Sophos said it investigated almost 40 intrusions linked to the threat actor between February 2024 and August 2025. The campaign is assessed with high confidence to share overlaps with a hacking group…
A China-aligned threat actor codenamed UTA0388 has been attributed to a series of spear-phishing campaigns targeting North America, Asia, and Europe that are designed to deliver a Go-based implant known as GOVERSHELL. “The initially observed campaigns were tailored to the targets, and the messages purported to be sent by senior researchers and analysts from legitimate-sounding,…