Secure AD from regular user from querying information?

I've created a standard AD user in my AD environment and discovered that, if I run Powershell with its credentials, or AD explorer, for example, I can query almost anything.
To me that does not seem very secure, and I'm wondering if that's an inherent permission with AD or if I have to manually modify things to prevent it.

So I can open AD explorer and browser all OUs, view groups and their members, etc, all as a Domain User with no extra permissions.

I can run powershell "get-aduser -username -properties * | fl" and get all their AD fields.

Would unchecking allow "Read" permission for Authenticated Users have any adverse effect?
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David Johnson, CD, MVPOwnerCommented:
if you do that then the user can't login.. the only confidential information that is stored in AD really is the users password and it is not accessible.
garryshapeAuthor Commented:
I can just open up Active Directory Users and Computers on a computer that has it installed and browse through it. I'm sure there are ways to prevent access to the software itself, but the fact that permissions exist for a standard user to browse it as well as all properties of AD objects is a bit frightening.

They can view:
Group memberships
Password last set times
Domain Controllers
Custom attributes made that contain sensitive information about users (like pin codes for other authentication systems)

is that the usual setup in AD?

Is setting the Confidential flag on schema attributes the only way to prevent any "Authenticated user" from accessing certain information?
David Johnson, CD, MVPOwnerCommented:
removing list objects may be a better idea
confidentiality bit is not all encompassing

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Will SzymkowskiSenior Solution ArchitectCommented:
When you have a user on the domain that user does in fact have Read Access to all areas (unless otherwise removed, which i wouldn't recommend).

If you are looking to hide specific attributes from users then you will have to use ADSIEdit and modify the attributes you want to hide. Personally I would not recommend messing around with this.

Take a look at the following link.

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