ShareLock applies Shamir's threshold scheme to distribute poisoning payloads across multiple MCP tool descriptions, achieving information-theoretic secrecy and over 90% average attack success rate in multi-tool scenarios.
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ShareLock: A Stealthy Multi-Tool Threshold Poisoning Attack Against MCP
ShareLock applies Shamir's threshold scheme to distribute poisoning payloads across multiple MCP tool descriptions, achieving information-theoretic secrecy and over 90% average attack success rate in multi-tool scenarios.