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TrendAI Security Blog

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Agenda Ransomware Deploys Linux Variant on Windows Systems Through Remote Management Tools and BYOVD Techniques

Trend™ Research identified a sophisticated Agenda ransomware attack that deployed a Linux variant on Windows systems. This cross-platform execution can make detection challenging for enterprises.

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Targeted attacks
The Rise of Collaborative Tactics Among China-aligned Cyber Espionage Campaigns

Trend™ Research examines the complex collaborative relationship between China-aligned APT groups via the new “Premier Pass-as-a-Service” model, exemplified by the recent activities of Earth Estries and Earth Naga.

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LLMs
When Tokenizers Drift: Hidden Costs and Security Risks in LLM Deployments

A tokenizer lies at the core of every large language model. When it drifts, whether from unseen flaws or adversarial interference, costs rise and performance drops. We explore this emerging risk, its implications, and the measures to prevent it.

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Cyber crime Malware
Fast, Broad, and Elusive: How Vidar Stealer 2.0 Upgrades Infostealer Capabilities

TrendAI™ Research examines the latest version of the Vidar stealer, which features a full rewrite in C, a multithreaded architecture, and several enhancements that warrant attention. Its timely evolution suggests that Vidar is positioning itself to occupy the space left after Lumma Stealer’s decline.

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Shifts in the Underground: The Impact of Water Kurita’s (Lumma Stealer) Doxxing

A targeted underground doxxing campaign exposed alleged core members of Lumma Stealer (Water Kurita), resulting in a sharp decline in its activity and a migration of customers to rival infostealer platforms.

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Operation Zero Disco: Attackers Exploit Cisco SNMP Vulnerability to Deploy Rootkits

Trend™ Research has uncovered an attack campaign exploiting the Cisco SNMP vulnerability CVE-2025-20352, allowing remote code execution and rootkit deployment on unprotected devices, with impacts observed on Cisco 9400, 9300, and legacy 3750G series.

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Cyber threats Exploits & Zero-Days IoT & smart devices
RondoDox: 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.

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Malware Phishing & BEC
Self-Propagating Malware Spreading Via WhatsApp, Targets Brazilian Users

TrendAI™ Research has identified an active campaign spreading via WhatsApp through a ZIP file attachment. When executed, the malware establishes persistence and hijacks the compromised WhatsApp account to send copies of itself to the victim’s contacts.

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Ransomware & extortion
New LockBit 5.0 Targets Windows, Linux, ESXi

TrendAI™ Research analyzed source binaries from the latest activity from notorious LockBit ransomware with their 5.0 version that exhibits advanced obfuscation, anti-analysis techniques, and seamless cross-platform capabilities for Windows, Linux, and ESXi systems.

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Cyber crime
What We Know About the NPM Supply Chain Attack

TrendAI™ Research outlines the critical details behind the ongoing NPM supply chain attack and offers essential steps to stay protected against potential compromise.

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