Seeking Counsel: Ongoing Targeted Campaign Against US Law Firms
Written by: Chad Reams, Tufail Ahmed, Keith Knapp, Ashley Frazer, Tyler McLellan Introduction From January through May 2026, Mandiant identified a financiall...
Mandiant Blog
20 articles
2 PhaaS 2 Furious: The Evolution of Chinese-language Phishing Services
Written by: Jamie Collier While Russian-speaking threat actors have historically dominated the phishing-as-a-service (PhaaS) landscape, a rival ecosystem is ...
Exploitation of KnowledgeDeliver via ViewState Deserialization Vulnerability
Written by: Takahiro Sugiyama, Peter Revelant, Mathew Potaczek Introduction In late 2025, Mandiant responded to a security incident involving a compromised w...
Welcome to BlackFile: Inside a Vishing Extortion Operation
Written by: Austin Larsen, Tyler McLellan, Genevieve Stark, Dan Ebreo Introduction Google Threat Intelligence Group (GTIG) has continued to track an expansiv...
GTIG AI Threat Tracker: Adversaries Leverage AI for Vulnerability Exploitation, Augmented Operations, and Initial Access
Executive Summary Since our February 2026 report on AI-related threat activity, Google Threat Intelligence Group (GTIG) has continued to track a maturing tra...
Snow Flurries: How UNC6692 Employed Social Engineering to Deploy a Custom Malware Suite
Written by: JP Glab, Tufail Ahmed, Josh Kelley, Muhammad Umair Introduction Google Threat Intelligence Group (GTIG) identified a multistage intrusion campaig...
The German Cyber Criminal Überfall: Shifts in Europe's Data Leak Landscape
Written by: Jamie Collier, Robin Grunewald Germany has reclaimed its position as a primary focus for cyber extortion in Europe. While data leak site (DLS) po...
vSphere and BRICKSTORM Malware: A Defender's Guide
Written by: Stuart Carrera Introduction Building on recent BRICKSTORM research from Google Threat Intelligence Group (GTIG), this post explores the evolving ...
North Korea-Nexus Threat Actor Compromises Widely Used Axios NPM Package in Supply Chain Attack
Written by: Austin Larsen, Dima Lenz, Adrian Hernandez, Tyler McLellan, Christopher Gardner, Ashley Zaya, Michael Rudden, Mon Liclican, Muhammad Umair Introd...
M-Trends 2026: Data, Insights, and Strategies From the Frontlines
Every year, the cyber threat landscape forces defenders to adapt to evolving adversary tactics, techniques, and procedures (TTPs). In 2025, Mandiant observed...
The Proliferation of DarkSword: iOS Exploit Chain Adopted by Multiple Threat Actors
Introduction Google Threat Intelligence Group (GTIG) has identified a new iOS full-chain exploit that leveraged multiple zero-day vulnerabilities to fully co...
Proactive Preparation and Hardening Against Destructive Attacks: 2026 Edition
Written by: Matthew McWhirt, Bhavesh Dhake, Emilio Oropeza, Gautam Krishnan, Stuart Carrera, Greg Blaum, Michael Rudden UPDATE (March 13): Added guidance aro...
Look What You Made Us Patch: 2025 Zero-Days in Review
Written by: Casey Charrier, James Sadowski, Zander Work, Clement Lecigne, Benoît Sevens, Fred Plan Executive Summary Google Threat Intelligence Group (GTIG) ...
Coruna: The Mysterious Journey of a Powerful iOS Exploit Kit
Introduction Google Threat Intelligence Group (GTIG) has identified a new and powerful exploit kit targeting Apple iPhone models running iOS version 13.0 (re...
Exposing the Undercurrent: Disrupting the GRIDTIDE Global Cyber Espionage Campaign
Introduction Last week, Google Threat Intelligence Group (GTIG), Mandiant, and partners took action to disrupt a global espionage campaign targeting telecomm...
From BRICKSTORM to GRIMBOLT: UNC6201 Exploiting a Dell RecoverPoint for Virtual Machines Zero-Day
Written by: Peter Ukhanov, Daniel Sislo, Nick Harbour, John Scarbrough, Fernando Tomlinson, Jr., Rich Reece Introduction Mandiant and Google Threat Intellige...
GTIG AI Threat Tracker: Distillation, Experimentation, and (Continued) Integration of AI for Adversarial Use
Introduction In the final quarter of 2025, Google Threat Intelligence Group (GTIG) observed threat actors increasingly integrating artificial intelligence (A...
UNC1069 Targets Cryptocurrency Sector with New Tooling and AI-Enabled Social Engineering
Written by: Ross Inman, Adrian Hernandez Introduction North Korean threat actors continue to evolve their tradecraft to target the cryptocurrency and decentr...
Vishing for Access: Tracking the Expansion of ShinyHunters-Branded SaaS Data Theft
Introduction Mandiant has identified an expansion in threat activity that uses tactics, techniques, and procedures (TTPs) consistent with prior ShinyHunters-...
Guidance from the Frontlines: Proactive Defense Against ShinyHunters-Branded Data Theft Targeting SaaS
Introduction Mandiant is tracking a significant expansion and escalation in the operations of threat clusters associated with ShinyHunters-branded extortion.