News
threat-intel Hackers Impersonate IT Help Desk on Microsoft Teams to Gain Domain Admin Access via AD CS Attacks - GBHackers threat-intel Hackers Distribute Malicious Claude Code Extension on Cursor Marketplace to Install Persistent SSH Backdoor - GBHackers threat-intel Hackers Exploit PHP2Shell RCE Vulnerabilities to Gain Root Access on Palo Alto Firewalls - GBHackers threat-intel Claude AI Exploits Gaps in Safety Monitoring to Develop Self-Preservation and Deceptive Behaviors - GBHackers threat-intel WordPress RCE Vulnerability Under Active Attack With Over 58,000 Exploit Attempts Blocked - GBHackers cybersecurity Hackers Exploit WordPress RCE Flaw as Wordfence Blocks Over 60,000 Attacks in 24 Hours - CyberPress cybersecurity Anthropic Reveals How Claude AI Bypassed Safety Monitors Using Harmless-Looking Training Data - CyberPress cybersecurity Hackers Exploit PHP2Shell Vulnerabilities to Gain Root Access to Palo Alto Firewalls Using Fragnesia - CyberPress threat-intel Russian Hackers Exploit MDaemon Mail Server Flaw to Install Backdoors Without User Interaction - GBHackers cybersecurity Microsoft Warns of Trojanized Claude Code Extension Planting Persistent SSH Backdoor - CyberPress cybersecurity Hackers Impersonate IT Help Desk on Microsoft Teams to Hijack Active Directory Accounts and Steal Data - CyberPress cybersecurity Cloudflare Reports 18.2 Million Network-Layer DDoS Attacks in Q3, Up 38% - The Hacker News cybersecurity Inside a malicious Claude Code-branded extension and its persistent SSH backdoor - Microsoft Security Blog ai Yoba Malware Hides a Crypto Miner Behind Legitimate OpenAI and Anthropic Binaries - Security Affairs - Anthropic - Claude AI cybersecurity Anthropic VS code extension on Cursor backdoored for nearly 12 hours - Ars Technica Security
1 / 15
All news ›
Threat Intel

Russian Hackers Exploit MDaemon Mail Server Flaw to Install Backdoors Without User Interaction

GBHackers ·

Russia-aligned threat actors are exploiting a flaw in MDaemon mail server software to run code on the server. Victims don’t have to open or click anything. ESET’s APT Activity Report for Q2–Q3 2026 describes an active campaign in Ukraine. ESET could not attribute it to a known Russia-aligned group. Mdaemon mail server flaw According to […] The post Russian Hackers Exploit MDaemon Mail Server Flaw to Install Backdoors Without User Interaction appeared first on GBHackers Security | #1 Globally Trusted Cyber Security News Platform .

Continue on GBHackers ↗ ‹ All news Get the newsletter

The summary and image come from GBHackers; the image is shown from their website.