Google Cloud released guidance on securing remote Model Context Protocol (MCP) server deployments, addressing vulnerabilities like tool poisoning, prompt injection, and session hijacking. The recommended approach centers on a centralized MCP proxy that enforces access controls, audit logging, and threat detection without modifying individual servers. The guide compares favorably with AWS Session Manager and Azure Arc practices, sharing common themes of identity-based access control, centralized management, and least-privilege principles while adding protocol-specific threat warnings unique to MCP deployments.
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