--- title: Auditing Agent Skills: A Threat Model for the Next... description: AI Agent Skills — small instruction folders that extend AI coding assistants like GitHub Copilot and Claude — are gaining rapid adoption, but carry serious... canonical: https://daily.dev/posts/auditing-agent-skills-a-threat-model-for-the-next-generation-of-ai-package-managers-vxdluywso twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Auditing Agent Skills: A Threat Model for the Next Generation of AI Package Managers | daily.dev og:description: AI Agent Skills — small instruction folders that extend AI coding assistants like GitHub Copilot and Claude — are gaining rapid adoption, but carry serious... og:url: https://daily.dev/posts/auditing-agent-skills-a-threat-model-for-the-next-generation-of-ai-package-managers-vxdluywso og:image: https://api.daily.dev/og/posts/vXDlUYwsO.png og:image:alt: Auditing Agent Skills: A Threat Model for the Next Generation of AI Package Managers og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Auditing Agent Skills: A Threat Model for the Next Generation of AI Package Managers **[DEV](https://daily.dev/sources/devto)** · 9 min read · 9 upvotes · 0 comments ## Summary AI Agent Skills — small instruction folders that extend AI coding assistants like GitHub Copilot and Claude — are gaining rapid adoption, but carry serious security risks that are largely unacknowledged. Anyone can publish a Skill on GitHub, and GitHub itself warns that Skills are unverified and may contain prompt injections or malicious scripts. A proof-of-concept 'csv-formatter' Skill demonstrates how hidden instructions can silently exfiltrate SSH keys, AWS credentials, and environment variables while telling the AI not to inform the user. The author built a scanner to detect such patterns and honestly evaluates its limits: signature-based checks fail against rephrasing, while behavioral analysis (credentials + network calls in the same file) and LLM-based semantic understanding are more durable. A layered detection approach — exact wording, behavior shape, model-based understanding, sandboxed execution, and change monitoring — is proposed. An open-source tool with a public benchmark is planned for a follow-up post. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Agent Skills: Explore security threats and controls](https://daily.dev/posts/agent-skills-explore-security-threats-and-controls-judzhn2fh) · Red Hat Developer · 0 upvotes · 0 comments - [Agent Skills are the New Packages of AI: It’s Time to Manage Them Securely](https://daily.dev/posts/agent-skills-are-the-new-packages-of-ai-it-s-time-to-manage-them-securely-2dxocz3ul) · JFrog · 2 upvotes · 1 comments - [What a security audit of 22,511 AI coding skills found lurking in the code](https://daily.dev/posts/what-a-security-audit-of-22-511-ai-coding-skills-found-lurking-in-the-code-gxhmcv2pg) · The New Stack · 2 upvotes · 0 comments --- Tags: [#ai](https://daily.dev/tags/ai), [#security](https://daily.dev/tags/security), [#open-source](https://daily.dev/tags/open-source), [#github](https://daily.dev/tags/github), [#ai-agents](https://daily.dev/tags/ai-agents), [#prompt-injection](https://daily.dev/tags/prompt-injection) [View this post on daily.dev](https://daily.dev/posts/auditing-agent-skills-a-threat-model-for-the-next-generation-of-ai-package-managers-vxdluywso) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Auditing Agent Skills: A Threat Model for the Next Generation of AI Package Managers","url":"https://daily.dev/posts/auditing-agent-skills-a-threat-model-for-the-next-generation-of-ai-package-managers-vxdluywso","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/auditing-agent-skills-a-threat-model-for-the-next-generation-of-ai-package-managers-vxdluywso"},"datePublished":"2026-07-28T14:09:59.192Z","dateModified":"2026-07-28T16:18:07.475Z","description":"AI Agent Skills — small instruction folders that extend AI coding assistants like GitHub Copilot and Claude — are gaining rapid adoption, but carry serious...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/5e753a7c0357c86e82b8076dbca94fb5?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/5e753a7c0357c86e82b8076dbca94fb5?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"DEV","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"DEV","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/devto","url":"https://daily.dev/sources/devto"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/auditing-agent-skills-a-threat-model-for-the-next-generation-of-ai-package-managers-vxdluywso","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":9},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"ai,security,open-source,github,ai-agents,prompt-injection","timeRequired":"PT9M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"DEV","item":"https://daily.dev/sources/devto"},{"@type":"ListItem","position":3,"name":"Auditing Agent Skills: A Threat Model for the Next Generation of AI Package Managers"}]} ```