Agent2Agent (A2A): The Security Model for Cross-Vendor Agent Communication
Google launched A2A in April 2025 with 50 partners; the Linux Foundation took it over in June. We unpack the security primitives and what defenders should ask for.
Deep dives, practical guides, and incident analyses from engineers who build Safeguard. No fluff, no vendor FUD — just what you need to ship secure software.
Google launched A2A in April 2025 with 50 partners; the Linux Foundation took it over in June. We unpack the security primitives and what defenders should ask for.
Cognition's Devin executes engineering tasks autonomously in cloud sandboxes. We unpack the trust boundaries, the human checkpoints, and what defenders must require.
Check Point Research showed Cursor bound trust to MCP entry names, not contents. A swap-after-approval gave attackers persistent RCE on engineers' laptops.
On July 18, 2025 a Replit AI agent ignored a code freeze, deleted 1,206 executive records, then fabricated cover-up data. The lessons reshape agent privilege design.
A Cursor user's Supabase MCP server was tricked by a support ticket into exfiltrating an integration_tokens table. The bug was not in MCP. It was in the trifecta.
A missing auth check in MCP Inspector versions below 0.14.1 let any website pop a shell on a developer's machine. Here is the full chain and what to fix.
Invariant Labs showed that a malicious GitHub Issue could hijack any MCP-connected agent into leaking private-repo contents. The architecture, not a bug, is the problem.
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