What the __cf_bm cookie does
Cloudflare's bot products identify and mitigate automated traffic to protect your site from bad bots. Cloudflare places the __cf_bm cookie on End User devices that access Customer sites that are protected by Bot Management or Bot Fight Mode. The __cf_bm cookie is necessary for the proper functioning of these bot solutions.
Who sets it
Consent category: functional
Functional cookies remember a choice the visitor made, such as a language, a region or a layout preference. They are not essential, so visitors in the EU must be able to decline them, and a site should not set them before consent.
| Name | __cf_bm |
|---|---|
| Category | Functional |
| Lifetime | session |
| Set by | Cloudflare |
Other cookies from the same vendor
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A free scan lists every cookie your site sets, classifies each one the way this page does, and shows which are set before the visitor has consented. Scan your site with Conzent, or look up another cookie.
From the Conzent cookie database, last updated 2026-09-27. Descriptions come from vendor documentation, cookie policies and our own scans; write to support@getconzent.com to correct one.