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Backdoors

BRICKSTORM AquaShell Reconnaissance Tools XZ-Utils Backdoor ToolShell ModeloRAT AngrySpark ShadowPad and DarkNimbus SNAPPYBEE SparrowDoor

Researchers Detail Deep#Door, a Stealthy Python Backdoor Hidden in a Windows Batch File

Public tunneling services mask its command traffic from standard network defenses.

US, UK Warn of ‘Firestarter’ Backdoor on Cisco Firewalls That Survives Patches

Harvester’s Linux GoGra Backdoor Hides C2 in Microsoft Graph and Outlook

ESET Uncovers China-Linked GopherWhisper Using Slack, Discord and Outlook for Stealthy C2

WordPress Pulls Dozens of Plugins After Backdoor Pushes Malware to Thousands of Sites

OpenAI Rotates Mac Signing Certificates, Sets May 8 Update Deadline After Axios Hack

Rapid7 Uncovers China-Linked Sleeper Cells in Global Telecom Networks

Cisco Talos Details China-Linked UAT-9244 Malware Targeting South American Telcos

Cisco Talos Exposes ‘Dohdoor’ Backdoor Using DNS-over-HTTPS in U.S. Education and Healthcare Attacks

Dell Patches RecoverPoint Zero-Day Exploited Since 2024 by Suspected China Group

Cisco Talos Unmasks 'DKnife' AitM Framework Tied to China Since 2019

Huntress Uncovers 'CrashFix' Browser Extension That Crashes Chrome to Push ModeloRAT

Cisco Releases Fix for AsyncOS Zero-Day Exploited on Secure Email Appliances

Huntress Uncovers Pre-Disclosure ESXi VM-Escape Toolkit Used in December Intrusion

Kaspersky: Mustang Panda Uses Signed Kernel-Mode Rootkit to Stealth-Load ToneShell

China-Linked Hackers Exploit Cisco Email Zero-Day With No Patch as CISA Flags Active Threat

U.S. and Canada Warn of China-Linked ‘BRICKSTORM’ Backdoor Targeting VMware

ESET Details 'EdgeStepper' Implant Used by China-Aligned PlushDaemon to Hijack Software Updates

Microsoft Uncovers ‘SesameOp’ Backdoor Using OpenAI Assistants API for Stealthy C2

Darktrace: Salt Typhoon Used Citrix Flaw in Attempted European Telco Breach