Counterfeit installers to system compromise: Tracking a deceptive software download campaign

In this article 1. Attack chain overview 2. Campaign scope and targeting 3. Mitigation and protection guidance 4. References 5. Learn more Microsoft Defender Experts is tracking an active malware campaign that uses counterfeit software-download websites to impersonate trusted vendors and distribu...

K000159681: Credential harvesting campaign targeting F5 VPN users

On January 13, 2026, researchers identified a large-scale credential harvesting campaign targeting several VPN providers, including F5. The threat actors behind the campaign registered numerous doppelgänger domains designed to mimic legitimate F5 domains. These domains are used to deceive victims...

Stealit Malware Abuses Node.js Single Executable Feature via Game and VPN Installers

Cybersecurity researchers have disclosed details of an active malware campaign called Stealit that has leveraged Node.js' Single Executable Application SEA feature as a way to distribute its payloads. According to Fortinet FortiGuard Labs, select iterations have also employed the open-source...