This detection rule identifies the deletion of log groups in AWS CloudWatch, which is a critical event as deleting a log group results in the permanent loss of all associated archived log events. The rule operates by monitoring specific API calls (DeleteLogGroup) within the last 60 minutes, looking at logs from both the AWS CloudTrail and Filebeat. The context of log group deletions is imperative because attackers may exploit this action to obscure their activities and weaken security monitoring that is dependent on these logs. An extensive note provides investigation guidance and potential responses, stressing the need for swift incident response and recognition of anomalous user behaviors or unauthorized actions.