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Ars Technica highlighted growing concerns about the Model Context Protocol (MCP), an emerging standard for AI agents to communicate with one another, warning that trust gaps in the protocol can allow malicious prompts to spread from one AI agent to another. The report frames MCP as one of the least scrutinized but potentially riskiest pieces of infrastructure in the fast-growing AI agent ecosystem. The warning comes amid broader industry concern about the security of autonomous AI agents as companies race to deploy agent-based products with minimal oversight.