IIS Server Variables security

[dtivel]

When I searched the internet for "IIS Server Variables", I found 2 documents:

• https://learn.microsoft.com/en-us/previous-versions/iis/6.0-sdk/ms524602(v=vs.90)?redirectedfrom=MSDN
• https://learn.microsoft.com/en-us/iis/web-dev-reference/server-variables

The first link is for a previous version that is not being updated.

However, notably, the Security section in the older document isn't present in the newer document. The advice seems pretty good and timeless. Are the security concerns no longer relevant in the current version? (Why doesn't the newer document have a similar Security section?)