Workshop

The workshop side of Mr.D: things built out of curiosity or irritation rather than a roadmap. A playable red versus blue cloud lab, the story of how HandyHive started, and the open-source tools that came out of repeated engineering work.

About D. Klincharski

Builds / Tools / Labs

Projects to explore.

01 Playable lab Cloud Siege: Control Plane ClashExplore attack paths and defensive controls in a playable Red versus Blue cloud security lab. Explore project 02 Open source DevOps SetupBootstrap consistent Windows and macOS engineering workstations from maintained package lists. Explore project 03 Open source PipelineHiveSee GitHub Actions pipeline health across selected repositories and jump straight to failed jobs. Explore project

Articles / Experiments

Notes from the work.

01 Aug 16, 2026 Cloud Siege: Learn Cloud Security by Playing Both SidesCloud Siege turns cloud security into a six-round Red vs Blue card game. Play solo, take the field training, or duel a friend—and learn why layered defence actually works. Journal · 4 min 02 Jul 23, 2026 The small tools we built for ourselves and decided to give awayOur open-source toolbox came out of daily annoyances, not a product plan. Here's what each tool does and why we use it ourselves. Technical blog · 3 min 03 Jul 20, 2026 How HandyHive started, and the problem we kept running intoFinding trustworthy local help still means digging through disconnected listings. HandyHive started as our own frustration and turned into a product. Journal · 3 min

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