A practical AWS security toolkit: battle-tested IAM policy examples, EMR / Hadoop / Kafka security templates, and reference snippets distilled from 15+ years of securing data platforms at enterprise (MNC) scale for AWS and Big Data .
Keywords: AWS IAM policy examples · AWS security templates · EMR Hadoop security AWS · least privilege IAM · enterprise data platform security AWS
Securing AWS well is mostly a pattern problem — the same IAM, encryption, and data-platform controls recur across every regulated environment, yet teams rebuild them from scratch each time. This is the umbrella repo for those reusable patterns: the things I reach for repeatedly, hardened by real enterprise-scale operation rather than copied from a docs page.
| Path | Purpose |
|---|---|
iam/ |
Least-privilege IAM policy examples + the policy-evaluation-logic explainer |
emr-hadoop/ |
EMR / Hadoop / Kafka security templates (encryption, auth, network isolation) |
encryption/ |
KMS patterns, S3 + EBS encryption baselines |
detective/ |
GuardDuty, Security Hub, Config quick-start snippets |
- IAM policy evaluation logic — the diagram AWS should have shipped (IAM was the #1 in-demand Melbourne JD skill).
- EMR/Hadoop hardening — encryption-in-transit/at-rest, Kerberos, fine-grained access — from running this in production at scale.
- Least privilege that survives an audit — policies written to pass a CPS 234 review, not just to work.
🟢 Rolling repo — v1 content shipped. Live: least-privilege data-platform IAM policy
(iam/), EMR security configuration + hardening guide (emr-hadoop/), CMK key policy +
key-management checklist (encryption/), detective-controls quick start (detective/).
More patterns added continuously. All examples use placeholder account IDs — replace before use.
- 📖 Blog: IAM Policy Evaluation Logic — the diagram AWS should have made
- 📖 Blog: Securing Hadoop/EMR on AWS — lessons from MNC scale
- 🌐 More at aiopsone.com — AI-powered AWS Security & Cloud Operations for APRA-regulated Australia.