Peter Girnus
18 articles
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BlogRanked First on CyberGym: TrendAI™ Agentic Exploit-Remediation Engine Scores 97% on the Top Exploit Benchmark
The TrendAI™ agentic exploit-remediation engine, code name AESIR, ranks first on CyberGym at 97% — more than 12 points ahead of both GPT-5.6 Sol and Claude Mythos 5. AI system architecture beats raw model capability.
August 26th, 2026 3 minPeter Girnus
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BlogThe Vercel Breach: OAuth Supply Chain Attack Exposes the Hidden Risk in Platform Environment Variables
An OAuth supply chain compromise at Vercel exposed how trusted third party apps and platform environment variables can bypass traditional defenses and amplify blast radius. This article examines the attack chain, underlying design tradeoffs, and what it reveals about modern PaaS and software supply chain risk.
April 20th, 2026 29 minPeter Girnus
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BlogAxios NPM Package Compromised: Supply Chain Attack Hits JavaScript HTTP Client with 100M+ Weekly Downloads
A supply chain attack hit Axios when attackers used stolen npm credentials to publish malicious versions containing a phantom dependency. This triggered a cross-platform RAT during installation and replaced its files with clean decoys, making detection challenging.
March 31st, 2026 10 minPeter Girnus, Jacob Santos
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BlogYour AI Gateway Was a Backdoor: Inside the LiteLLM Supply Chain Compromise
TeamPCP orchestrated one of the most sophisticated multi-ecosystem supply chain campaigns publicly documented to date. It cascaded through developer tooling and compromised LiteLLM and exposed how AI proxy services that concentrate API keys and cloud credentials become high-value collateral when supply chain attacks compromise upstream dependencies.
March 26th, 2026 26 minPeter Girnus, Deep Patel, Simon Dulude, Ashish Verma…
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BlogIntroducing the TrendAI™ Agentic Exploit-Remediation Engine: Finding Zero-Day Vulnerabilities at the Speed of AI
The TrendAI™ agentic exploit-remediation engine, code name AESIR, combines AI automation with expert oversight to discover zero-day vulnerabilities in AI infrastructure – 21 CVEs across NVIDIA, Tencent, and MLflow since mid-2025.
January 15th, 2026Peter Girnus
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BlogCVE-2025-55182: React2Shell Analysis, Proof-of-Concept Chaos, and In-the-Wild Exploitation
CVE-2025-55182 is a CVSS 10.0 pre-authentication RCE affecting React Server Components. Amid the flood of fake proof-of-concept exploits, scanners, exploits, and widespread misconceptions, this technical analysis intends to cut through the noise.
December 10th, 2025 21 minPeter Girnus, Deep Patel, Jack Walsh, Lucas Silva…
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BlogCritical React Server Components Vulnerability CVE-2025-55182: What Security Teams Need to Know
CVE-2025-55182 is a critical (CVSS 10.0) pre-authentication remote code execution vulnerability affecting React Server Components used in React.js, Next.js, and related frameworks (see the context section for a more exhaustive list of affected frameworks).
December 5th, 2025 3 minPeter Girnus
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BlogRondoDox: From Targeting Pwn2Own Vulnerabilities to Shotgunning Exploits
The Trend Zero Day Initiative™ (ZDI) and Trend™ Research teams have identified a large-scale RondoDox botnet campaign exploiting over 50 vulnerabilities across more than 30 vendors, including flaws first seen in Pwn2Own contests.
October 9th, 2025 9 minDeep Patel, Ashish Verma, Simon Dulude, Peter Girnus
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BlogZDI-CAN-25373: Windows Shortcut Exploit Abused as Zero-Day in Widespread APT Campaigns
Trend Zero Day Initiative™ (ZDI) uncovered both state-sponsored and cybercriminal groups extensively exploiting ZDI-CAN-25373 (aka ZDI-25-148), a Windows .lnk file vulnerability that enables hidden command execution.
March 18th, 2025 13 minPeter Girnus, Aliakbar Zahravi
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BlogCVE-2025-0411: Ukrainian Organizations Targeted in Zero-Day Campaign and Homoglyph Attacks
The Trend ZDI team offers an analysis on how CVE-2025-0411, a zero-day vulnerability in 7-Zip, was actively exploited to target Ukrainian organizations in a SmokeLoader campaign involving homoglyph attacks.
February 4th, 2025 12 minPeter Girnus
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BlogCVE-2024-38112: Void Banshee Targets Windows Users Through Zombie Internet Explorer in Zero-Day Attacks
Our threat hunters discovered CVE-2024-38112, which was used as a zero-day by APT group Void Banshee, to access and execute files through the disabled Internet Explorer using MSHTML. We promptly identified and reported this zero-day vulnerability to Microsoft, and it has been patched.
July 15th, 2024 14 minPeter Girnus, Aliakbar Zahravi
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BlogBehind the Great Wall: Void Arachne Targets Chinese-Speaking Users With the Winos 4.0 C&C Framework
We recently discovered a new threat actor group that we dubbed Void Arachne. This group targets Chinese-speaking users with malicious Windows Installer (MSI) files in a recent campaign. These MSI files contain legitimate software installer files for AI software and other popular software but are bundled with malicious Winos payloads.
June 19th, 2024 18 minPeter Girnus, Aliakbar Zahravi, Ahmed Mohamed Ibrahim
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BlogCVE-2024-21412: DarkGate Operators Exploit Microsoft Windows SmartScreen Bypass in Zero-Day Campaign
In addition to our Water Hydra APT zero day analysis, the Zero Day Initiative (ZDI) observed a DarkGate campaign which we discovered in mid-January 2024 where DarkGate operators exploited CVE-2024-21412.
March 13th, 2024 20 minPeter Girnus, Aliakbar Zahravi, Simon Zuckerbraun
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BlogThreat Actor Groups, Including Black Basta, are Exploiting Recent ScreenConnect Vulnerabilities
This blog entry gives a detailed analysis of these recent ScreenConnect vulnerabilities. We also discuss our discovery of threat actor groups, including Black Basta and Bl00dy Ransomware gangs, that are actively exploiting CVE-2024-1708 and CVE-2024-1709 based on our telemetry.
February 27th, 2024 8 minIan Kenefick, Junestherry Dela Cruz, Peter Girnus
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BlogCVE-2024-21412: Water Hydra Targets Traders With Microsoft Defender SmartScreen Zero-Day
The APT group Water Hydra has been exploiting the Microsoft Defender SmartScreen vulnerability (CVE-2024-21412) in its campaigns targeting financial market traders. This vulnerability, which has now been patched by Microsoft, was discovered and disclosed by the Trend Micro Zero Day Initiative.
February 13th, 2024 16 minPeter Girnus, Aliakbar Zahravi, Simon Zuckerbraun
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BlogCVE-2023-36025 Exploited for Defense Evasion in Phemedrone Stealer Campaign
This blog delves into the Phemedrone Stealer campaign's exploitation of CVE-2023-36025, the Windows Defender SmartScreen Bypass vulnerability, for its defense evasion and investigates the malware's payload.
January 12th, 2024 12 minPeter Girnus, Aliakbar Zahravi, Simon Zuckerbraun
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BlogCVE-2023-46604 (Apache ActiveMQ) Exploited to Infect Systems With Cryptominers and Rootkits
We uncovered the active exploitation of the Apache ActiveMQ vulnerability CVE-2023-46604 to download and infect Linux systems with the Kinsing malware (also known as h2miner) and cryptocurrency miner.
November 20th, 2023 5 minPeter Girnus
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BlogEnigma Stealer Targets Cryptocurrency Industry with Fake Jobs
We discovered an active campaign targeting Eastern Europeans in the cryptocurrency industry using fake job lures.
February 9th, 2023 11 minAliakbar Zahravi, Peter Girnus
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