TLDR Tech / InfoSec
Securing AI agents: When AI tools move from reading to acting
Enterprise AI agents are starting to run tasks across business systems via MCP-connected tools, which opens the door to data theft when tool metadata is poisoned. A finance-focused Copilot Studio agent example shows how hidden instructions in an enrichment server's description quietly pull unpaid invoice data and send it to an attacker-controlled endpoint, all while remaining within normal permissions and workflows. Microsoft recommends treating MCP servers and descriptions as part of the supply chain, inspecting metadata, restricting tool access, and using DLP, Sentinel, and Guardrails to monitor and block risky actions.
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