Ensure a Log Metric Filter and Alarm Exist for Security Group Changes in AWS
You can do real-time monitoring of API calls by directing CloudTrail logs to CloudWatch Logs and establishing corresponding metric filters and alarms. Security groups are a stateful packet filter that controls ingress and egress traffic in a VPC. Security Hub recommends that you create a metric filter and alarm for changes to security groups. Monitoring these changes helps ensure that resources and services aren't unintentionally exposed. Send results via Email.
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Breakdown
  1. Ensure a Log Metric Filter and Alarm Exist for Security Group Changes.
  2. Send results via Email. This result step can be changed from Email to Slack, Microsoft Teams or Discord.