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Supply Chain Security, in plain English.

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AI Security

MCP tool poisoning: hidden instructions and rug-pulled tool definitions

Tool-poisoning attacks against Model Context Protocol servers hide adversarial instructions inside tool descriptions and silently mutate tool definitions after install. Here is how the attack works and how to defend against it.

May 12, 20268 min read

AI Security

Claude MCP Tool Poisoning Threat Model 2026

A senior engineer's threat model for Claude MCP tool poisoning in 2026, covering malicious servers, description hijacking, and the authorization patterns that actually help.

Mar 21, 20267 min read

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