Return to Threats

Trojanized AI skills gain 1.7M installs in agent-targeted attack

CSO Online 2026-08-08 AI supply chain Critical

Executive Summary

CSO Online reports typosquatted AI skills with 1.7 million installs instructed agents to install a credential stealer from GitHub.

What Happened

CSO Online reports that typosquatting on popular AI services led to malicious skills that instructed agents to install a credential stealer from GitHub. The article frames this as an agent-targeted attack that abuses trust in AI tool ecosystems and package discovery mechanisms.

Vulnerability / Attack Technique

Trojanized AI agent skills

Technical Mechanism

As reported, skill instructions told agents to fetch and run malware.

AI Security Category

LLM03:2025 Supply Chain

Part of the AI Supply Chain and AI SBOM topic.

Relevant Frameworks

LLM03:2025 Supply ChainLLM01:2025 Prompt InjectionLLM06:2025 Excessive Agency

RealGround Analysis

Skills are instructions agents follow. RealGround analysis: review skills like code before installing.

Recommended Controls

  • Install skills only from verified publishers
  • Block agents from running downloaded binaries

Related RealGround Service

AI Agent SBOM and LLM Mapping · or start with the free AI Agent Security Scanner.

Sources

CSO Online: https://www.csoonline.com/news/

Summary and analysis written by RealGround from the source above; last updated 2026-10-18.

Talk to AI CISO