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Threat IntelligenceSep 26, 2026

Placeholder Domains Used by 349 AI Agent Skills Found Redirecting to Scams

Placeholder domains in AI agent skills redirect to scam sites.

Manifold Security discovered that placeholder domains, present in 359,000 GitHub files and 349 AI agent skills, are being redirected to scam websites. This indicates a potential supply chain risk within AI development, where malicious actors could exploit these common placeholders to distribute fraudulent content or malware.

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The lesson from this incident

Full lesson

Developers commonly use placeholder or example domains (e.g., 'example.com' or 'yourdomain.com') in code templates, AI agent skill definitions, and configuration files without verifying ownership or replacing them before deployment. Malicious actors have exploited this oversight by registering or redirecting these unclaimed domains to scam and malware sites, affecting 349 AI agent skills and over 359,000 GitHub files. This represents a serious supply chain vulnerability, as AI agents that call these domains can silently redirect users to fraudulent content without any obvious warning. The scale of exposure — spanning public repositories and packaged AI skills — demonstrates how a seemingly minor development shortcut can become a widespread attack vector at the ecosystem level.

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Indicators of Compromise

Extracted by AI from the linked source. Not reviewed by an editor. How this works

  • malware — cloaked scam

Entities

AI agent skills (product)Manifold Security (vendor)GitHub (technology)