How are cloudflare cookies used?

Hello,

We’re writing our cookie usage and as far as I know, cloudlare adds to our visitors about 2 or 3 cookies.
Besides the browser challenge, how are these being used?

Thank you.

Isn’t that just for cloudflare.com site and not ALL sites that use cloudflare?

It should also apply to your site. Which cookies are you talking about?

Cookie: __cfduid=VALUE;
If I enable under attack mode, there is another one:
Cookie: cf_clearance=VALUE

The first cookie is well described and you can find more information by using the search.

The second cookie is issued when you pass a challenge.

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