Browser Integrity Check
Cloudflare’s Browser Integrity Check (BIC) looks for common HTTP headers abused most commonly by spammers and denies access to your page.
It also challenges visitors without a user agent or with a non-standard user agent such as commonly used by abusive bots, crawlers, or visitors.
Disable Browser Integrity Check
BIC is enabled by default.
To disable BIC globally for your zone:
- Log into the .
- Select your account and zone.
- Go to Security > Settings.
- For Browser Integrity Check, switch the toggle to Off.