I rebuilt 18 billion photos. Now I hunt threats.

Hi DEV community 👋

I'm Dennis Kim (Kim HoKwang). I've been building things on the internet for a long time, and I just realized most of that work has never had an English-language home. So here it is — a quick hello and what I plan to write about.

The short version of my path
I helped run one of the world's first social networks. Long before Facebook, there was Cyworld — a Korean SNS that defined an entire generation's online life. I served as its CTO-side lead during a critical chapter, and one project still stands out as the hardest engineering problem I've owned:

Restoring 18 billion photos and 8 million videos from Cyworld's archives.

If you've ever migrated a database and felt the pressure of "don't lose a single row," multiply that by people's actual memories — first days of school, weddings, kids growing up. That job rewired how I think about data integrity, storage at scale, and the human weight behind the bytes.

Where I've spent my time since

Microsoft Azure MVP (2015–2023). Eight years in the MVP program, mostly around cloud architecture and helping developers ship on Azure.

Blockchain & Web3 since 2019. I build infrastructure and tooling in the Web3 space — the engineering is messy, fast-moving, and exactly the kind of problem I enjoy.

Independent cyber threat intelligence. This is where most of my writing energy goes now. I publish OSINT-based CTI reports on supply chain attacks, zero-days, AI/LLM security, and state-backed threat actors.

What I'll write about here
I want DEV to be the place where I share the practical, developer-facing side of security:

Breakdowns of fresh vulnerabilities — what the attack chain actually is, and what you do Monday morning (patch, mitigate, hunt).
Notes from the AI/LLM security frontier, including how attackers are starting to use LLMs and "vibe coding" to build tooling at alarming speed.
The occasional war story from scaling systems and restoring data that people genuinely cared about.

No fear-mongering, no hype. Defense over noise.

Let's connect
I keep an open, OSINT-based threat intelligence archive on GitHub — multilingual reports, free to read and reference:

gameworkerkim / CYBER-THREAT-INTELLIGENCE-REPORT

This report analyzes the collapse of the cyber weapons supply chain and its impact on national security through the case of the Coruna iOS Exploit Kit. Cyber warfare has evolved into a decentralized and commercialized threat ecosystem

Cyber Threat Intelligence Report

독립 사이버 위협 인텔리전스 리포트 아카이브 Independent Cyber Threat Intelligence Archive · OSINT-based Defensive Research

언어 (Language): 한국어 · English · 日本語 · 中文

본 저장소는 방어·연구·정책 수립 목적의 공개 사이버 위협 인텔리전스(Open CTI) 리포트를 수집·발행하는 독립 아카이브입니다. 모든 리포트는 OSINT 기반으로 작성되며, 특정 조직·기관·국가의 공식 입장을 대변하지 않습니다.

This repository is an independent archive of open-source cyber threat intelligence (CTI) reports, intended for defensive, research, and policy purposes. All reports are OSINT-based and do not represent the official position of any organization.

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About the Analyst

이름 (Name)	Dennis Kim (김호광 / HoKwang Kim)
역할 (Role)	CEO, Betalabs Inc. · 前 Cyworld Z CEO · Independent Threat Intelligence Analyst · Microsoft Azure MVP
전문 분야	Web3·블록체인 보안, 공급망 공격, 제로데이 생태계, 북한·국가배후 위협, AI/LLM 보안, MCP 보안
Email	[e-mail]
GitHub	@gameworkerkim

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Latest Reports — Featured

2026-05-20 발행 — 단일 주간 4건 동시 경보

5월 셋째…

View on GitHub

GitHub: github.com/gameworkerkim
LinkedIn: testcode

If you work in security, cloud, or Web3 — or you just like a good data-recovery story — say hi in the comments. I'd love to know what you're building.
Thanks for reading, and glad to be here. 🙏