This document provides a practitioner’s perspective and contains a set of practical techniques to help IT executives protect an enterprise Active Directory® environment. Active Directory plays a critical role in the IT infrastructure, and ensures the harmony and security of different network resources in a global, interconnected environment. The methods discussed are based largely on the Microsoft® Information Security and Risk Management (ISRM) organization’s experience, which is accountable for protecting the assets of Microsoft IT and other Microsoft Business Divisions, in addition to advising a selected number of Microsoft Global 500 customers.

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