Open Source & Experiments
Side projects born from blog posts — exploring local AI, security, and infrastructure.
Passdown
ActiveEphemeral session handoff for AI agents. First-write-wins, auto-expiring markdown sharing between AI sessions.
Session handoff tool built for AI agent workflows. POST a markdown briefing, get a shareable URL. Content is first-write-wins (no auth needed), auto-expires, and serves raw markdown to CLI tools while browsers get a rendered SPA with expiry countdown and view counts. Two source files, no build step, deployed on Cloudflare Workers.
VibeCockpit
ActiveUnified dashboard for AI coding sessions. Scans Claude Code, Copilot, Codex, Gemini, and OpenCode. Browse, search, and resume from one place.
The cockpit for your copilots. VibeCockpit auto-detects installed AI coding tools and gives you one place to search, filter, and resume any session. Supports Claude Code, Claude Desktop, Codex CLI, Copilot CLI, OpenCode, and Gemini CLI. Web dashboard, terminal TUI, remote SSH scanning, and a plugin architecture for adding new tools. Single binary, zero config, open source.
pipeline-monitor
Coming SooneBPF-based auditor for CI/CD pipelines that captures environment variable access to detect secret exfiltration. Also records DNS queries (UDP port 53) to track external connections.
eBPF-based auditor for CI/CD pipelines that captures environment variable access via libc getenv to detect secret exfiltration. Records DNS queries (UDP port 53) to track external connections. Outputs JSON audit reports with timestamps, process names, and PIDs/TIDs. Includes .env.monitor allowlist for targeting specific secrets. Runs as a GitHub Actions step or on any Linux host with eBPF support.
AI Context Firewall
ActiveOllama-compatible API proxy that inspects prompts for injection attacks using a secondary LLM, with a web UI for monitoring and configuration.
A proof-of-concept implementation of the AI firewall concept from the blog series. Sits between clients and Ollama, inspects every prompt via a secondary inspector LLM, and blocks requests above a configurable risk threshold. Includes a web dashboard with per-request timing, color-coded risk levels, and configurable inspector prompts (standard, strict, multilingual, custom).
VMRay Threat Feed
ArchivedPublic threat intelligence service providing real-time malware analysis data, built during my time at VMRay.
A public-facing threat intelligence feed built at VMRay. Aggregates and serves real-time malware analysis data from VMRay’s sandbox infrastructure. Built with serverless architecture on AWS.
Hackathon Projects
Building prototypes under pressure — 8 hackathons and counting.
Unplague
Top 14% Project#WirVsVirus Hackathon
Fight Corona with toilet paper and stop its further spread.
Try it on Unplague.de
Place2Be
Semi-FinalistBCX20 - Bosch Connected Experience
Multi-criteria apartment search that takes into account public infrastructure and more to minimize commuting time based on your locations.
Featured on the HERE Technologies Blog.
Gamification of eBikes - Bike like a Bosch
BCX19 - Bosch Connected Experience
Connect your smartphone to your eBike and use it as a controller for games like Snake or train your sense of balance.
IoT Challenge
#hack4tk
Linkage of a virtualized production system with a cloud solution to obtain process information - usage of Augmented Reality to support employees during maintenance work.
Smart Appointment Scheduling
3rd PlaceDo!Hack
Use your time more efficiently by being notified X minutes before your appointment. Thanks to our adaptive technology, you will never waste your time waiting for your appointment again.
Insurance Finder
InsurHack
Buy a short-term insurance policy using an innovative smartphone application. Take a photo of your expensive object (e.g., a DSLR), have the model automatically recognized, insure it, and go on vacation relaxed.
Smart Table Soccer
Digital Transformation Hackathon
Integration of retrofittable sensors for obtaining statistics such as goals or occupancy. Link these information through NFC tags to your player profile and compare it with your friends.
Production Chain Optimization
Smart Factory Hackathon
Optimization of a production chain for crankshafts by the usage of artificial intelligence/machine learning.