The AWS Security Arsenal: Tools That Defend Your Cloud
Production-ready security and cost optimization scripts, each available as CLI and Lambda automation.
AWS provides a comprehensive suite of security services, but operationalizing them requires custom tooling. This series delivers production-ready scripts that scan for deprecated Lambda runtimes, enforce MFA compliance, detect publicly exposed RDS databases and S3 buckets, and audit load balancer configurations. Each tool comes as both a CLI version for immediate investigations and a Lambda version for automated, scheduled monitoring.
6 articles in this guide
Learning Path
Follow these articles in order for a structured learning experience, or jump to any topic.
AWS Security & Cost Optimization Arsenal: From CLI to Lambda Automation
Introducing a 14-episode series of production-ready AWS security and cost optimization scripts. Each tool comes as both a CLI version and a Lambda version for automated monitoring.
Episode 1: Hunting Deprecated Lambda Runtimes - Before They Become Problems
Learn how to systematically identify Lambda functions running on deprecated runtimes across all AWS regions with CLI and Lambda automation tools.
Episode 2: The MFA Enforcement Scanner - Automating Your Security Blind Spot
Build an automated MFA compliance scanner that identifies IAM users with console access but no MFA enabled, with risk-based prioritization and Lambda monitoring.
Episode 3: Public RDS Detective - Finding Your Exposed Databases Before Attackers Do
Build automated scanners that identify publicly accessible RDS databases, analyze security groups, check encryption, and generate remediation commands across all AWS regions.
Episode 4: S3 Exposure Hunter - Preventing the Data Breaches That Make Headlines
Detect and remediate exposed S3 buckets by analyzing ACLs, bucket policies, public access blocks, and website hosting configurations with automated scanning tools.
Episode 5: Load Balancer Security Auditor - SSL, Protocols, and Public Exposure
Audit all AWS load balancers across regions in one command. Detect HTTP listeners on public ALBs, outdated TLS policies, unhealthy targets, and insecure configurations.
Key Takeaways
Deploy automated scanners that detect security misconfigurations across all AWS regions.
Identify deprecated Lambda runtimes, missing MFA, public databases, and exposed S3 buckets.
Use both CLI and Lambda versions to fit your workflow: ad-hoc investigations or scheduled monitoring.
Audit load balancer SSL/TLS configurations, listener rules, and public exposure in one command.
Need Help with AWS security automation?
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