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#Backdoor

32 articles

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HIGH
Threat Intel

UNC6692 Targets Microsoft Teams to Deploy Snow Malware

UNC6692 is leveraging Microsoft Teams and social engineering to deliver the modular Snow malware suite, facilitating long-term persistence and data theft.

Runtime Rebel Intel
3 min read · Apr 25, 2026
HIGH
Malware

Firestarter Backdoor Infects Cisco Firewall at US Federal Agency

Analysis of the Firestarter backdoor on Cisco firewalls, detailing its remote access capabilities, post-patch persistence, and mitigation strategies.

Runtime Rebel Intel
4 min read · Apr 24, 2026
CRITICAL
Malware

FIRESTARTER Backdoor: Persistent Threat to Cisco Firepower & Secure Firewall

CISA and NCSC warn of FIRESTARTER, an APT-deployed backdoor maintaining persistence on Cisco Firepower and Secure Firewall devices post-patching.

Runtime Rebel Intel
6 min read · Apr 23, 2026
APT41 Deploys Stealth Backdoor for Cloud Credential Harvesting
HIGH
Threat Intel

APT41 Deploys Stealth Backdoor for Cloud Credential Harvesting

China-linked APT41 is targeting AWS, Azure, and Google Cloud with a new zero-detection backdoor designed to harvest credentials and maintain persistence.

Runtime Rebel Intel
4 min read · Apr 13, 2026
Smart Slider 3 Pro 3.5.1.35 Backdoor via Supply Chain Attack
HIGH
Supply Chain

Smart Slider 3 Pro 3.5.1.35 Backdoor via Supply Chain Attack

Nextend's Smart Slider 3 Pro version 3.5.1.35 was compromised via a supply chain attack. Learn how to identify and remediate the backdoor today.

Runtime Rebel Intel
3 min read · Apr 10, 2026
Red Menshen APT Deploys Upgraded BPFdoor Backdoor Against Telcos
HIGH
Threat Intel

Red Menshen APT Deploys Upgraded BPFdoor Backdoor Against Telcos

Chinese APT Red Menshen utilizes an upgraded BPFdoor backdoor to target global telecommunication companies, bypassing traditional defenses.

Runtime Rebel Intel
4 min read · Mar 27, 2026

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HIGH
Supply Chain

Fake Next.js Job Interview Tests Backdoor Developers

Microsoft Defender discovered a campaign where malicious Next.js job interview tests backdoor developers' devices, posing a supply chain risk.

Runtime Rebel Intel
5 min read · Feb 26, 2026
HIGH
Supply Chain

Malicious npm Package Targets React Developers with Backdoored Polyfill

A typosquatted npm package mimicking a popular React utility has been downloaded over 47,000 times before removal.

Runtime Rebel Intel
2 min read · Jan 25, 2024