This detection rule monitors for significant alterations in a user's download behavior within Box, utilizing the Box Shield service. The rule is triggered when there is a reported sharp increase in download activities defined as anomalous based on predefined thresholds. An event categorized as a 'SHIELD_ALERT' is expected when a user's download volume deviates dramatically from their typical usage patterns, indicating potential exfiltration. Investigators should validate whether such behavior corresponds to legitimate use cases such as bulk download requests or if it indicates malicious intent. The implemented rule provides alerts that include risk scores and summaries of the download activities detected, helping in the prioritization and analysis of potential security incidents.