The Xcode Assassin Returns: A Deep Dive Into the Latest XCSSET Version
Analysis of XCSSET v40 reveals a macOS malware targeting developers via Xcode. Unit 42 used advanced pattern matching and AI to decode its logic.
Unit 42
18 articles
Chinese-Speaking Threat Actor Harnesses AI Models for Autonomous Cyberattacks
Unit 42 details a Chinese speaking threat actor combining autonomous AI scanning across seven vulnerabilities with manual exploitation. Read more.
Russian Global Webmail Espionage
Unit 42 details a Russian cyberespionage campaign targeting Zimbra webmail servers using JavaScript injection to steal credentials. The post Russian Global W...
Three Steps to the Terminal: A Siemens ROX II Zero-Day Trilogy
A technical analysis of three chained zero-day vulnerabilities in Siemens ROX II OT switches that allow privilege escalation and persistent root access. The ...
AI, Automation and Attacks: Unpacking the Unit 42 2026 Global Incident Response Report
Explore Unit 42's perspectives on AI's impact on cybersecurity, including key updates since the 2026 Incident Response Report. The post AI, Automation and At...
The npm Threat Landscape: Attack Surface and Mitigations (Updated July 15)
Unit 42 analyzes npm supply chain evolution post-Shai Hulud. Discover wormable malware, CI/CD persistence, multi-stage attacks and more.
TuxBot v3: Inside an IoT Botnet Framework With LLM-Assisted Development
TuxBot v3 Evolution, an IoT botnet framework built with LLMs. Read our analysis of its cross-compiled binaries, C2 architecture and bugs.
No Manners Here: The Ruthless Rise of The Gentlemen Ransomware
Unit 42 explores The Gentlemen ransomware operations, revealing the affiliate model driving its rapid growth. Learn more here.
Vidar Stealer Unmasked: Code Signing Abuse, Go Loaders and File Inflation
A cybercrime campaign combined a loader-as-a-service framework and DLL sideloading via a Go-compiled fake MpClient.dll, a novel evasion layer combination.
How We Added WebAuthn to a Browser-Based RDP Client
A look inside the reverse-engineering journey of building the first RDP client outside of Windows to support WebAuthn redirection. The post How We Added WebA...
Phantom Squatting: AI-Hallucinated Domains as a Software Supply Chain Vector
Attackers can exploit LLM domain hallucinations through phantom squatting to target supply chains. Read the analysis to learn more.
Threat Brief: Mitigating Large-Scale Credential Attacks
We provide guidance for preparing for and mitigating large-scale credential attacks, focusing on recent campaigns targeting security vendors' devices. The po...
CL-STA-1062 Targets Southeast Asian Governments and Critical Infrastructure
Government entities and critical infrastructure were targeted for espionage in SE Asia by attackers using a hybrid toolkit, including custom TinyRCT backdoor...
OpenClaw’s Skill Marketplace and the Emerging AI Supply Chain Threat
Unit 42's analysis of ClawHub revealed evasive malicious skills bypassing automated scanners to deploy infostealers and execute agentic financial fraud. The ...
The Global Namespace Risk: Universal Bucket Hijacking Technique for Cloud Data Exfiltration
Unit 42 research details how attackers could exploit global name uniqueness in bucket hijacking to redirect cloud data streams across major CSPs. The post Th...
Pickle in the Middle – Hijacking Vertex AI Model Uploads for Cross-Tenant RCE
Unit 42 discovered a Vertex AI Python SDK vulnerability that allows remote code execution via bucket squatting. Read the article for more.
Inside the Modern SOC: The 72-Minute Race
Attackers can move from access to exfiltration in 72 minutes. Learn how modern SOC teams close the speed gap with Unit 42's AI-driven automation, threat hunt...
Tracing Digital Intent: New MacOS Tahoe 26 Artifact Discovered
Unit 42 has discovered a new macOS Tahoe 26 forensic artifact that tracks user menu selections across the operating system. Learn more here.