> ## Documentation Index
> Fetch the complete documentation index at: https://help.airbridge.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Frequency Capping

Suspicious touchpoints can be detected by determining whether unusually excessive numbers of touchpoints occurred during a set time period. For example, if 10 touchpoints per minute are considered to be normal, and 15 touchpoints have been collected per minute, the last 5 touchpoints will be tagged as fraud.

## Rule Setup

1. Navigate to **\[Settings]>\[Fraud Validation Rules]**.

2. Select the **\[Frequency Capping]** tab and click **Add a rule**.

3. Select **Click** or **Impression** as **\[Touchpoint]**.

4. Select **IP**, **Device**, or **Sub-Publisher** as **\[Property]**.

5. Enter the cap amount. Touchpoints that occur beyond the cap amount will be treated as suspicious.

6. Set the time period. You can set 1 to 10 minutes in 1-minute increments, 10 to 55 minutes in 5-minute increments, and 1 to 24 hours in 1-hour increments.

7. Select **\[Prevention Level]** and click **Save**.

<Danger>
  **Attention**

  It is advised to start from "Prevention Level 1" and switch to higher levels after consulting with your media partner, as the prevention level setting may have a direct impact on the ad performance.
</Danger>

8. Click **Add a rule** to add more rules. When you have added multiple rules, any touchpoint that matches at least 1 of the configured rules will be considered suspicious.

### Prevention Level

Suspicious touchpoints detected by the frequency capping rules are processed according to the set prevention levels.

| <span style={{ display: 'inline-block', minWidth: '100px' }}>Prevention Level</span> | <span style={{ display: 'inline-block', minWidth: '200px' }}>Description</span>                                                                                                                                                 |
| ------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Level 1: Tag as fraud                                                                | - Suspicious touchpoints will be tagged as fraud in the Airbridge reports and raw data export files.                                                                                                                            |
| Level 2: Don't send postbacks                                                        | - Suspicious touchpoints will be tagged as fraud in the Airbridge reports and raw data export files.<br />- Suspicious touchpoints won't be sent as postbacks.                                                                  |
| Level 3: Don't attribute                                                             | - Suspicious touchpoints will be tagged as fraud in the Airbridge reports and raw data export files.<br />- Suspicious touchpoints won't be sent as postbacks.<br />- Suspicious touchpoints won't be attributed or aggregated. |

<Accordion title="Postbacks for suspicious events">
  When the Prevention Level is set to 2 or higher, [suspected fraud events](/en/guides/fraud-validation-rules) are excluded from postbacks. However, you can send them with limitations by completing the [Postback settings](#postback-settings) below.

  ###### Data included in postbacks

  * Sends [Target events](/en/guides/airbridge-attribution-model#target-events) only: Installs (App), Deeplink Opens (App), and Deeplink Pageviews (App).
  * Sends events as unattributed.
  * Sends the identified fraud type.

  ###### Eligible channels

  * Postbacks are sent to channels that would have received attribution if not suspected as fraud. These are channels that met all other [Airbridge attribution model](/en/guides/airbridge-attribution-model) rules, including touchpoint priority and last-touch attribution (LTA).
  * Postbacks are sent only to channels with the [Postback settings](#postback-settings) below configured.

  ###### Postback settings

  * In the postback delivery rule, set **\[Attribution]** to **All Events**
  * Edit the postback URL as follows. If using the POST method, contact your CSM or reach out through the [Airbridge Help Center](https://app.airbridge.io/supports).

    * Add a postback parameter. Enter the parameter name specified by the channel and select `{unattributedTouchpointFraudReason}` as the parameter value.
    * Some channels require `{unattributedTouchpointClickID}` as the Click ID parameter value. Confirm with the channel.
</Accordion>

## Reporting

Suspicious touchpoints detected by the set rules can be viewed in your Airbridge reports and raw data export files.

In the Actuals Report, select "Touchpoint Fraud Tag" as a GroupBy to visualize the suspicious touchpoints tagged as fraud.

In the **\[App Raw Data Export]**, select "Touchpoint Fraud Tag" and "Fraud Tags" in the **\[Select Property]** step to export suspicious touchpoints as a CSV file.

<Accordion title="Touchpoint Fraud Tags for suspicious touchpoints detected by frequency capping rules">
  * Fraud\_Touchpoint\_BlacklistingByServersideIP
  * Fraud\_Touchpoint\_BlacklistingByOverseaIP
  * Fraud\_Touchpoint\_ClickFrequencyCapped
  * Fraud\_Touchpoint\_ImpressionFrequencyCapped
  * Fraud\_Touchpoint\_ClickFrequencyCappedByIP
  * Fraud\_Touchpoint\_ClickFrequencyCappedByDevice
  * Fraud\_Touchpoint\_ClickFrequencyCappedSubpublisher
  * Fraud\_Touchpoint\_ImpressionFrequencyCappedByIP
  * Fraud\_Touchpoint\_ImpressionFrequencyCappedByDevice
  * Fraud\_Touchpoint\_ImpressionFrequencyCappedBySubpublisher
  * Fraud\_Touchpoint\_ClickShortLagTime
  * Fraud\_Touchpoint\_ClickLongLagTime
  * Fraud\_Touchpoint\_ImpressionShortLagTime
  * Fraud\_Touchpoint\_ImpressionLongLagTime
</Accordion>

<link rel="alternate" hrefLang="en" href="https://help.airbridge.io/en/guides/frequency-capping" />

<link rel="alternate" hrefLang="ko" href="https://help.airbridge.io/ko/guides/frequency-capping" />