---
title: Browser Integrity · Cloudflare Learning Paths
description: Cloudflare's Browser Integrity Check (BIC) looks for common HTTP
  headers abused most commonly by spammers and denies access to your page.
lastUpdated: 2024-08-13T19:56:56.000Z
chatbotDeprioritize: false
source_url:
  html: https://developers.cloudflare.com/learning-paths/application-security/default-traffic-security/browser-integrity/
  md: https://developers.cloudflare.com/learning-paths/application-security/default-traffic-security/browser-integrity/index.md
---

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.

[BIC is enabled by default](https://developers.cloudflare.com/waf/tools/browser-integrity-check/).
