The Help Center rate limiting settings (Data > Security > Rate limiting) lets you to prevent a User or bot from carrying out the same action repeatedly within a short period of time.

For each action that has a rate limiting setting, you can define how many times within a period of time the same User can do an action before triggering the rate limit.

You can also choose what action occurs when rate limiting is triggered:

• Show a CAPTCHA to the User.

• Disable that action for the User.

See the  CAPTCHA settings section for more options to do with CAPTCHAs.