Securing AI agent access: Inside the architecture of classification-based access policy in Box Shield

Box Shield’s Classification-Based Access Policy addresses the risk that AI agents and third-party integrations can extract sensitive information through document previews or text representations without downloading files. The policy extends existing integration restrictions by treating Read and Download as separate actions, allowing administrators to apply classification-based rules to each action independently and to block, allow, or monitor integrations according to their service identities. At request time, Box’s enforcement engine checks a file’s classification and the integration’s permissions, while all decisions, including monitored actions that would have been blocked, are logged through the Event Stream API. In a financial-services example, this approach prevents a connected AI tool from summarizing confidential M&A documents while preserving access to permitted public research. The feature is designed to let organizations adopt AI integrations gradually, use monitoring before enforcement, and retain audit visibility as agent-based access becomes more common.

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