State-Sponsored UAT-4356 Deploys FIRESTARTER Backdoor on Cisco Firepower Devices via Chained N-Day Vulnerabilities
Cisco Talos has uncovered an active espionage campaign by state-sponsored group UAT-4356, which chains two Cisco Firepower FXOS vulnerabilities (CVE-2025-20333 and CVE-2025-20362) to deploy the FIRESTARTER backdoor —...
Supply Chain Attack Backdoors Smart Slider 3 Pro: 800,000+ WordPress Sites at Risk
Attackers compromised Nextend's update infrastructure to distribute a weaponized version of Smart Slider 3 Pro (v3.5.1.35) for approximately six hours on April 7, 2026. Sites that auto-updated received...
Stealthy Linux backdoor leveraging residential proxies and NHAS reverse SSH
A recently discovered Linux backdoor (SHA256: ea41b2bf1064efcb6196bb79b40c5158fc339a36a3d3ddee68c822d797895b4e) employs advanced evasion techniques to bypass detection while establishing persistent access via SOCKS5 proxies and in-memory payload execution. This analysis breaks...
Glutton: a new PHP backdoor
On April 29, 2024, XLab’s threat analysis system detected unusual activities linked to a new malware named Glutton, designed to stealthily infiltrate popular PHP frameworks. This malware was...
Yokai Backdoor campaign using DLL side-loading techniques
Thai government officials are currently facing a sophisticated cyber threat as they become the primary targets of a new malware campaign utilizing a technique known as DLL side-loading....