Paul Hoerenz / Homepage / GitHub / App Store / Google Play
I'm a Cyber Security student working at ZEISS, where I help keep digital systems secure.
Outside of work, I enjoy building websites, apps, and open source projects. I also volunteer as a mentor at juFORUM, where I organize and lead workshops to introduce young people to software development and cyber security.
I regularly create and lead hands-on workshops on software development and cyber security. All materials are open source and freely available.
- Basics of app development: xp4u1/app_workshop (German)
- Hack me if you can - Introduction to Cyber Security: xp4u1/cybersecurity_workshop (German)
2026:
- Zukunftsakademie Heidenheim: Hack me if you can - Introduction to Cyber Security
- Zukunftsakademie Heidenheim: Basics of app development
2025:
- Zukunftsakademie Heidenheim: Basics of app development
- Fraunhofer Talent Take Off – Vernetzen: Hack me if you can - Introduction to Cyber Security
2024:
- Fraunhofer Talent Take Off – Vernetzen: Basics of app development
2023:
- Fraunhofer Talent Take Off – Vernetzen: Basics of app development
- juFORUM Mentorenwochenende: Basics of app development
Behind the scenes, I write a lot more code than I publish. This is just a small selection of my public projects, featuring the ones I still use, maintain, or enjoyed building and believe could be useful to others.
- zeroday.pw Self-hosted CTF platform with automated subdomains, isolated challenges, and full data control.
- memoria Sleek, minimalist diary with private, secure, self-hosted data.
- blockwerk Kubernetes-based Minecraft cloud management system.
- missus Minimal file upload tool.
- App Workshop Custom low-code platform with companion app to teach (app/game) development
I enjoy creating digital designs and have been doing so long before AI started generating them. A collection of visuals, interfaces, and creative projects I've worked on over the years:
