distribution · May 21, 2026
Smithery Registry Shows Shadow MCP Servers as Invisible AI Infrastructure Threat
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UpGuard published an article on May 20 2026 warning about shadow MCP servers in Smithery and MCP.so. Employees searching for official integrations may install unofficial servers using brand names before finding legitimate ones. Any data processed by those servers goes to the third-party builder. Organizations are advised to search their company and product names in Smithery.ai and MCP.so to detect impersonations.
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