Securing Active Directory in a data center and enterpise

Need a study and comparison between upgrading/building out and securing an existing Active Directory (AD) environment vs. starting over with deploying a new AD solution.  Want to know impacts and solutions centered around both scenarios.  Existing AD has a very good chance of being flawed or compromised.  Need to weigh in on all options because AD is already in production and need to consider impacts.

I need to deliver a feasibility study.  Looking for research on the topic and also drawing from those with field experience.
Ted JamesAsked:
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Cliff GaliherCommented:
There is a big difference between "flawed" and "compromised" (a term often used in cybersecurity to mean maliciously modified)

The former can often be corrected. The latter is almost always a rebuild as the cost of a compromise can prove costly if it can be shown that due diligence was not taken. Bankruptcy lelce event if you out a known compromised system into play.
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Ted JamesAuthor Commented:
Client is being quiet about it.  So since they are asking for a comparison study and  they are looking for a technical and impact study between the two approaches let's tackle this as a "flawed" system.
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Ted JamesAuthor Commented:
So let it be a comparison between a rebuild and an upgrade.  Looking for the technical impacts of either approach.
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Ted JamesAuthor Commented:
Thank you very much!
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