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