Built a tool that stops AI agents from being hijacked by malicious content in webpages and emails

“`html Arc Gate is a new tool designed to prevent AI agents from being hijacked by malicious content in webpages and emails.…

By AI Maestro May 13, 2026 1 min read
Built a tool that stops AI agents from being hijacked by malicious content in webpages and emails

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  • Arc Gate is a new tool designed to prevent AI agents from being hijacked by malicious content in webpages and emails. It does this by acting as a proxy that tracks who can issue instructions to the agent.
  • When a webpage or email attempts to give instructions to an AI agent, Arc Gate treats these communications as untrusted and denies any instruction authority. This protection is provided without requiring changes from developers beyond updating their API URL.

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Originally published at reddit.com. Curated by AI Maestro.

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