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Re: Windows EFS and Changing a Local Account Password
From: Derek Schaible <dschaible () cssiinc com>
Date: Mon, 17 Jul 2006 07:04:06 -0400

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It is my understanding that if a user changes their own password, then EFS functions normally. However, if a computer is a Domain Member and an Admin changes a local account password, the EFS encrypted files are no longer accessible. If a computer is not a Domain Member, then the Local Admin can reset a password and access EFS Encrypted Data.

The issue with the Domain computers is due to the need for a Domain- wide Key Recovery Agent (KRA) With a KRA Certificate, the security maintainer in the organization can access any EFS encrypted data. This prevents a company laptop, encrypted with EFS from being stolen where the Local Admin account is reset via a Viper-like tool. In this scenario, all EFS data is still secure. However, this protection is not afforded to stand-alone or workgroup systems.

HTH,
Derek Schaible



On Jul 13, 2006, at 11:36 PM, winshel () camden rutgers edu wrote:

Thanks for the replies. I thought I had read somewhere that changing the local account password could lock you out since the encryption was based on the password. I may have misunderstood.

Thanks again for the responses.

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