Set Up a Challenge
A challenge is an interactive verification that the visitor sees (similar to a Cloudflare check). It is useful when you don't want to fully block suspicious traffic but want to filter out bots while keeping real users.
When to Use
Suitable Scenarios
- Traffic is suspicious but not definitively fraudulent
- You don't want to lose potential customers due to false positives
- You need additional verification for a specific segment
Step 1. Create a Rule with the Challenge Action
Go to Rules > Add Rule.
Define the conditions under which the challenge should be shown. For example:
| Scenario | Conditions |
|---|---|
| All proxy traffic | is_proxy equals true |
| Traffic from India with a timezone mismatch | geo_country equals IN AND is_tz_mismatch equals true |
Select the Show Challenge action and set a challenge rate — the percentage of visits that will receive the verification.
Why limit the percentage?
If you are unsure about the scale of the fraud, start with 20-30%. This allows you to collect statistics on challenge pass rates without significantly affecting all traffic. If most visitors fail the check — increase the percentage.
Step 2. Attach the Rule to an Integration
Open the relevant integration and add the created rule to the list. Once added, a Challenge section will appear in the integration settings with additional parameters:
- Probability — can be adjusted at the integration level
- Design — choice of verification template
Step 3. Monitor the Results
Challenge metrics are available in Statistics:
| Metric | What it shows |
|---|---|
| Challenge Total | How many times the challenge was shown |
| Challenge Pass | How many times it was successfully passed |
A low pass rate confirms that the traffic is indeed fraudulent. A high pass rate may indicate that you should adjust the rule conditions.
What's Next
- Handle Fraudulent Traffic — flag, redirect, or take other actions
- Set Up Scheduled Reports — automated monitoring of results
- Metrics Reference — all metrics, including Challenge Total and Challenge Pass