homeprojectsblogabout

  • github

  • email

  • x / twitter

  • linkedin

  • personal docs

  • rss

© 2026 Yehezkiel Wiradhika

Hey, i'm Hez.

Welcome to my website!

I'm a Penetration Tester and DevSecOps / Security Engineer specializing in offensive security — backed by real production engineering experience. I understand vulnerabilities from both sides: as an attacker who has tested 20+ web applications for critical flaws, and as an engineer who built the systems being attacked. I've built custom security tools — Vortex, AegisCI, GateKeeper Go, RBACLens — spanning threat intelligence, secure CI/CD, and access control analysis. Pursuing eJPT, with OSCP next.

Personal Docs (Detailed Insights)Projects and Posts ↓
Github LinkedIn Medium Twitter Resume

Featured Posts

Penetration Testing, DevSecOps, Security Engineering, Machine Learning and much more!

11/3/2026

eJPT Certification Takeaways

An insight after passing eJPT certification.

eJPTpenetration testingapplication security
→
9/7/2026

Ubuntu 22.04 VPS Linux Server Hardening from Scratch

Accepting file uploads is one of the easiest ways to introduce a critical vulnerability into your application. Here's how to do it right.

ubuntuvpscyber security
→
Show more →

Featured Projects

Production and portfolio projects across Cyber Security, DevOps, AI/ML, and Backend Engineering — including real-world systems shipped at Astra Otoparts and Studio 8.

⭐ Production Grade Projects
Production Systems

⭐ Production Grade Projects

Production-grade distributed systems, industrial AI pipelines, threat intelligence platforms, and high-concurrency microservices shipped across enterprise, freelance, and research domains.

GoDistributed SystemsMicroservicesNext.jsPyTorch
→
Cyber Security: Penetration Testing & DevSecOps
Security & Pentest

Cyber Security: Penetration Testing & DevSecOps

Offensive security engagements, threat intelligence pipelines, SIEM/IDS implementations, honeypots, malware analysis, and automated DevSecOps static/dynamic scanning.

Cyber SecurityPenetration TestingDevSecOpsThreat IntelligenceSIEM
→
DevOps, Cloud Computing & Networking Projects
DevOps & Cloud Lab

DevOps, Cloud Computing & Networking Projects

A bunch of DevOps, Cloud Computing, Networking & Operating Systems projects.

DockerTerraformAWSEC2S3
→
Backend Engineering
Backend Engineering

Backend Engineering

Hands-on production patterns and code snippets in Go covering gRPC microservices, RabbitMQ work queues, Redis caching with JWT token rotation, Gemini LLM integrations, and automated unit testing with Mockery.

GoGingRPCRabbitMQRedis
↗
Show more →