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DATA-LOSS-PREVENTION

Data-Loss-Prevention

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Microsoft Defender and Purview Add AI Agent Controls in September 2026

Microsoft Defender and Purview Add AI Agent Controls in September 2026

FIRST LOOK ATLAS OWASP MEDIUM Moderate risk · Monitor closely ▲ 7.2 Microsoft Security Blog

Microsoft's September 2026 security update delivers network-layer data loss prevention for agentic AI traffic, AI-generated email detonation summaries in Security Copilot, and enterprise-scale labelling automation in Microsoft Purview. These capabilities close a material gap for defenders by extending Zero Trust policy enforcement to on-behalf-of (OBO) agent actions — an emerging blind spot as autonomous agents operate across employee devices and cloud platforms. Residual gaps remain around coverage breadth for third-party agent frameworks, cross-platform policy portability, and the organisational maturity required to define reliable classification policies before enforcement becomes effective.

AWS Brings Model-Agnostic PII Detection to LLM Pipelines

AWS Brings Model-Agnostic PII Detection to LLM Pipelines

FIRST LOOK ATLAS OWASP MEDIUM Moderate risk · Monitor closely ▲ 5.5 AWS Machine Learning Blog

AWS has published guidance and tooling for model-agnostic PII detection using large language models, enabling organisations to identify sensitive data exposure across diverse LLM deployments regardless of the underlying model provider. This closes a meaningful gap for defenders who previously lacked a flexible, provider-neutral mechanism for detecting PII leakage in LLM inputs and outputs at scale. Realising the full benefit requires integration maturity, consistent labelling policy, and operational commitment to monitoring LLM data flows in production.

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