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AD Rights Management Service (Part 1): Architecture, Deprecation, and Reconnaissance
Active Directory Rights Management Services (AD RMS) continues to ship and receive support in Windows Server 2025 despite Microsoft's cloud migration push. The article describes the AD RMS trust model, certificate infrastructure, and SOAP attack surface, then details reconnaissance techniques to discover RMS deployments, extract file metadata, and locate certificate private keys.
Why it matters: Security practitioners managing on-premises Windows Server environments need to understand AD RMS architecture and exposure pathways to assess risk and defend against attackers targeting the legacy rights management system.
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