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Technical articles on Cloud, DevSecOps, Network, Security.

Cover image for AWS Security Hub vs. Security Hub CSPM: Why Are There Two Services?

AWS Security Hub vs. Security Hub CSPM: Why Are There Two Services?

AWS now has both Security Hub and Security Hub CSPM. This article explains why they exist, how they differ, and when you should use each one.

13 min read
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Cover image for The Silent Cost of NAT Gateways: Why You Should Use 3 VPC Endpoints for ECR & S3

The Silent Cost of NAT Gateways: Why You Should Use 3 VPC Endpoints for ECR & S3

Why using NAT Gateways for AWS-internal traffic is a costly architectural mistake, and how deploying 3 specific VPC Endpoints changes the pricing model entirely.

4 min read
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Cover image for ECS on EC2 vs ECS on Fargate: What Should You Choose?

ECS on EC2 vs ECS on Fargate: What Should You Choose?

A practical breakdown of how ECS's two launch types actually differ — not just on paper, but in the 2am-pager kind of way.

5 min read
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Series · 12 partsDevSecOpsCloud

Terraform

A structured self-study path for Terraform — theory, hands-on labs, and a real project, from initial setup through production-grade infrastructure.

View series (12 parts)
Cover image for DoS/DDoS Attacks Across the OSI Model — And How to Fight Back

DoS/DDoS Attacks Across the OSI Model — And How to Fight Back

A deep dive into Denial of Service attack techniques at each OSI layer, with a hands-on TCP SYN Flood demo and a real iptables u32 defense rule.

8 min read
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