How to protect sitemap?

Question

Create a sitemap

Everything is cool, except that anyone can parse the sitemap and pull out any content that has been added and edited manually for a long time.
How to protect your sitemap from strangers?
How to organize protection against site parsing?

Answer 1

If you are afraid of parsers, do protection against parsers, but do not protect the sitemap.

Answer 2

It is necessary to provide content through authorization so that "left" users cannot watch it.
And in fact - you come up with nonsense. A sitemap is needed to simplify access to the site - this is the purpose of its existence.