For a block to occur in Terraform WAF policy "prevention mode," what must be the minimum anomaly score?

In Terraform WAF policy "prevention mode," an anomaly score is used to assess whether a request is potentially malicious based on the characteristics and patterns of the incoming traffic. The system assigns scores to detected anomalies, and, when the score reaches a certain threshold, it indicates that preventive actions should be taken.

For a block to occur, the minimum anomaly score must be set high enough to reduce the risk of false positives, ensuring that legitimate traffic is not inadvertently interrupted. The correct answer indicates that an anomaly score of 5 is the threshold where a block action will take place in prevention mode. This means that when a request is assessed and achieves an anomaly score of 5 or higher, the WAF will trigger a blocking response.

In this context, scoring is crucial to the overall effectiveness of the WAF. Setting the threshold at 5 balances the need to mitigate potential attacks while minimizing unnecessary disruptions to normal traffic. This understanding of the required anomaly score is essential for configuring the WAF policies effectively in a Terraform setup.