// about

Taking software apart since 2012

Other people's malware first, then the web, now the whole stack — including the servers this site runs on. The way here wasn't a degree, it's a documented trail.

// the path

2012
First malware analysis: a CS:GO "cheat" that wasn't one. The start of the documented trail.
2014
Reverse engineering RATs and C2 infrastructure, reported publicly. Own blog since around then.
2016
Cerber ransomware decryptor. Responsible disclosure to a local bank: worked through the PIN entropy math, shipped concrete fixes. Debian hardening writeups that live on in the homelab today.
2021
Founded Contegus — web development as the business entry. Astro, WordPress, SvelteKit, taking over and simplifying inherited stacks.
2026
Shift back to security and infrastructure. Less a pivot than a coming-out: the same DNA as 2012, now with my own infrastructure underneath.

// how i work

Security / forensics
Finding backdoors that scanners miss — documented since 2012. CVSS 10 writeup →
Web engineering
Astro with my own CSS framework, custom WordPress, SvelteKit — specialty: simplifying inherited stacks. projects →
Infrastructure / DevOps
Proxmox homelab, own git/CI stack, Ansible IaC, three-tier isolation. homelab →
AI engineering
Versioned agent skills as infrastructure, LLM out of the action path. marlin →
Data / document pipelines
SHA-256 dedup across 1,351 PDFs, own RAG pipelines, semantic search. dedup audit →
SEO / GEO
Technical SEO and measurable GEO baselines — the depth on that lives at Contegus. Contegus →
Compliance / a11y
GDPR audits, WCAG 2.2 AA as a quiet delivery standard, HIPAA review without assurances.

// contact

Client work runs through Contegus, my studio for web, SEO, and security. Until this site launches, that's also the shortest way to reach me.

// colophon

  • built with Astro, statically generated — zero client JavaScript
  • no cookies, no tracking, no third-party fonts
  • fonts self-hosted: Inter Variable and IBM Plex Mono, both SIL Open Font License — the licenses sit next to the font files
  • CSS base: contegus-ui, my own framework, vendored as a versioned snapshot
  • source language German, English mirror under /en/