implementing-cloud-trail-log-analysis

# Implementing CloudTrail Log Analysis ## When to Use - When building security monitoring pipelines for AWS API activity - When investigating security incidents to trace attacker actions across AWS services - When compliance requires audit logging of all administrative and data access operations - When creating detection rules for known attack patterns in AWS environments - When establishing baseline API behavior for anomaly detection **Do not use** for real-time threat detection (use GuardDuty which already analyzes CloudTrail), for application-level logging (use CloudWatch Application Logs), or for network traffic analysis (use VPC Flow Logs). ## Prerequisites - CloudTrail enabled with management events and optionally data events across all accounts - S3 bucket configured as CloudTrail delivery channel with appropriate retention policies - Amazon Athena configured with CloudTrail log table for ad-hoc queries - CloudWatch Logs subscription for real-time analysis with Logs Insights - SIEM integration (Splunk, Elastic, or Security Lake) for production monitoring ## Workflow ### Step 1: Configure CloudTrail for Comprehensive Logging Ensure CloudTrail captures all relevant event types across the organization. ```bash # Create an organization trail (captures all accounts) aws cloudtrail create-trail \ --name org-security-trail \ --s3-bucket-name cloudtrail-logs-org-ACCOUNT \ --is-organization-trail \ --is-multi-region-trail \ --include-global-service-events \ ...