What is 'Browser integrity check'?

The 'Browser integrity check' feature looks for HTTP headers most commonly abused by spammers and blocks their access to your domain. It also challenges visitors without a user-agent or with a non-standard user-agent such as abusive bots, crawlers, or visitors. 

You can find this security feature by navigating to ‘Origin Shield’ > 'Bot management'. On the 'Application layer' box, look for 'Browser integrity check'.

Toggle the switch to turn on/off this security feature. 

You can also change the settings from 'Standard' to 'Strict.'Selecting 'Strict' will also block rogue web search engine crawlers.