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Local JWT validation is fast until revocation lags bite you. When to introspect at Cognito, use API Gateway JWT authorizers, and add Verified Permissions for fine-grained authz.
Palaniappan PToken buckets allow bursts and leaky buckets smooth traffic. WAF rate rules and API Gateway usage plans implement neither perfectly, but both matter for layered defense.
Palaniappan PA full TLS handshake on every API call adds RTTs your p99 cannot afford. This guide walks through TLS 1.3 1-RTT handshakes and resumption, ACM cert rotation, and security policies on ALB and CloudFront.
Palaniappan PControl Tower gets you an org, but it does not tell you how many OUs you need or which policy type owns VPC public access. Since re:Invent 2024 you have four layers (SCP, RCP, declarative, and tag policies), and RCP coverage grew through Feb 2026 (DynamoDB). A composite 60-account enterprise cut exception SCP attachments from 14 ad-hoc to 3 time-boxed RFCs in two quarters by moving accounts out of "temporary" prod OUs.
Palaniappan PSecurity Hub detects control failures. It is not the compliance pipeline, and treating it as one is why teams still scramble for evidence at audit time. The four jobs are distinct: AWS Config detects drift, conformance packs deploy rules org-wide as immutable bundles, SSM Automation remediates the safe class, and evidence accrues via conformance-pack exports plus Security Hub control status (Audit Manager only if you onboarded before it closed to new customers on 30 April 2026). This post has the tool-per-job matrix, a conformance pack with auto-remediation, and the auto-remediation gotcha to design around.
Nash OgdenTwo 2025 shifts rewrite the IR playbook: GuardDuty Extended Threat Detection now emits a single critical attack-sequence finding instead of a pile of high findings, and AWS Security Incident Response moved to metered pricing (free first 10,000 findings/month, then $0.000676 each) on November 21, 2025. The lesson is to page humans on the top 1% of correlated criticals, isolate instead of terminate, and let auto-triage absorb the rest.
Nash OgdenMost KMS guides stop at "enable encryption." The architecture decision that actually bites is the key boundary: split one CMK into 3,200 per-tenant keys and you pay ~$3,200/mo in key storage alone while still sharing a single 10,000 req/s symmetric quota. The post covers the decision matrix, the throttle math, and the encryption-context pattern that gives per-tenant isolation without per-tenant keys.
Nash OgdenProduction CloudTrail: multi-region org trails, log validation, CMK, Lake + Athena. July 2026 checklist. Event History is not enough.
Nash OgdenEBS default encryption per Region, CMK lifecycle, block public snapshots. July 2026 baseline checklist. Retrofit is expensive.
Nash OgdenHardening quick wins: private DMS, OpenSearch encryption, SageMaker VPC-only, Lambda runtime EOL. July 2026 checklist.
Nash OgdenDORA on AWS since Jan 2025: RoI, TLPT/TIBER-EU, incident clocks, Artifact addendum. July 2026 readiness checklist.
Nash OgdenHow to build a vulnerability management program that scales beyond CVE-counting. Inspector v2 deployment, CVSS + CISA KEV + reachability for risk-based prioritization, container and IaC scanning in CI/CD, and remediation SLAs that survive audits.
Nash Ogden
