The __cfduid cookie is used to identify individual clients behind a shared IP address and to apply security settings per client.
For example, if a visitor is in a coffee shop with multiple infected machines, but the specific visitor’s machine is trusted (for example, because they completed a challenge within your Challenge Passage period), the cookie can be identified by Cloudflare. and Cloudflare does not challenge the visitor again. It does not match any user ID in your web application and does not store personally identifiable information.
Depending on the Always use HTTP configuration, this cookie is created as secure or non-secure.
Cookies set by Cloudflare:
__cfidentifier*
