# Licences © 2026 Stefan Waldvogel Pré Carré, Castellan and this site are published under three licences, one for each kind of material. **Code: GNU GPL v3 or later · Texts, pictures and reconstructions: CC BY-SA 4.0 · Fonts: SIL OFL 1.1** ## Code: GNU General Public License, version 3 or later SPDX-License-Identifier: `GPL-3.0-or-later` The program code is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. It is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. This covers: - the scripts, markup and style sheets of `game.html` (Pré Carré) and `castellan.html` (Castellan), including the program logic of the procedural terrain, rendering, simulation and export code; - the markup, style and script of the home page `index.html`, the Pré Carré landing page `pre-carre.html`, the Cyber Hunting Guide `cyber-hunting-guide.html`, the Job Hunt game `job-hunt.html`, the Log Parser Builder `grok-builder.html` with `grok-worker.js`, the Sigma Workbench `sigma-workbench.html` with `sigma-worker.js`, the Windows Event Reference `event-reference.html`, the Graylog Toolkit `graylog-toolkit.html` with `toolkit-worker.js`, the Detection Desk `detection-desk.html` with `desk-worker.js`, the Analyst Kit `analyst-kit.html` with `analyst-worker.js`, the Coverage Planner `coverage-planner.html` with `coverage-worker.js` (except the bundled third-party data listed below), and the style sheets in `fonts/`; - the build and test scripts, where they are published. Full text: [LICENSE-CODE.txt](LICENSE-CODE.txt) (also at ). ## Texts, pictures and reconstructions: Creative Commons Attribution-ShareAlike 4.0 SPDX-License-Identifier: `CC-BY-SA-4.0` Licensed under the Creative Commons Attribution-ShareAlike 4.0 International licence: (summary: ). This covers: - the texts of the games and of this site: help, captions, messages, the chronicle, the home page, the Pré Carré landing page the Cyber Hunting Guide (its guidance, roadmap, role descriptions, checklists and resource notes) the Job Hunt game (its texts, events and end-screen notes), the Log Parser Builder (its texts, notes and ready-made format samples), and the detection toolkit (the Event Reference texts, the six example Sigma rules and their test events, the field mapping table, the texts and sample data of the Detection Desk, Analyst Kit and Coverage Planner, notes); - the pictures in `images/` and any screenshots of the games; - the example reconstructions in Castellan and the landscapes in Pré Carré: their data (outlines, positions, sizes, heights, dates, names), the notes and info cards and the source lines. These data sit inside the program files, but they are licensed under CC BY-SA 4.0, not the GPL. Credit as: "Stefan Waldvogel, Pré Carré / Castellan, CC BY-SA 4.0", with a link to this site or to the licence. The sources the reconstructions were made from are listed in [CREDITS.txt](CREDITS.txt). Facts taken from German Wikipedia articles (CC BY-SA 4.0) were rewritten, not copied; their authors are listed in each article's history. CC BY-SA 4.0 material may be adapted into GPLv3 works (Creative Commons lists the GPL v3 as a compatible licence), so a modified game that also changes the examples can be shared as a whole under the GPL v3. ## MITRE ATT&CK data (not covered by the licences above) The compact ATT&CK extract inside `sigma-workbench.html`, `sigma-worker.js`, `event-reference.html`, `detection-desk.html`, `desk-worker.js`, `analyst-kit.html`, `analyst-worker.js`, `coverage-planner.html` and `coverage-worker.js` (technique ids, names and tactics of MITRE ATT&CK Enterprise v20.0, plus its detection strategies, analytics and data components in the Coverage Planner) is not GPL or CC BY-SA material. © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. "The MITRE Corporation (MITRE) hereby grants you a non-exclusive, royalty-free license to use ATT&CK® for research, development, and commercial purposes. Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." Terms: . SigmaHQ rules (Detection Rule License) are not included; they are only linked. ## Atomic Red Team index (MIT, not covered by the licences above) The trimmed Atomic Red Team test index inside `coverage-planner.html` (names, GUIDs, platforms, executor names, one-line descriptions and links; no commands) comes from at commit 388942adbd9641f4dfdcf079d7efe9a75ec0ac43 (2026-09-05). MIT License, Copyright (c) 2018 Red Canary, Inc.; the full licence text is in [CREDITS.txt](CREDITS.txt). The ADS builder (Palantir's Alerting and Detection Strategy framework) and the hunting notebook (the PEAK framework) are only inspired by those frameworks; no text from them is included. ## Fonts: SIL Open Font License 1.1 SPDX-License-Identifier: `OFL-1.1` - IM Fell English and IM Fell English SC: Copyright (c) 2010 Igino Marini. Licence: [fonts/OFL-IM-Fell.txt](fonts/OFL-IM-Fell.txt) - Alegreya Sans: Copyright 2013 The Alegreya Sans Project Authors (Juan Pablo del Peral, Huerta Tipográfica). Licence: [fonts/OFL-Alegreya-Sans.txt](fonts/OFL-Alegreya-Sans.txt) - Inter: Copyright 2020 The Inter Project Authors. Licence: [fonts/OFL-Inter.txt](fonts/OFL-Inter.txt) - JetBrains Mono: Copyright 2020 The JetBrains Mono Project Authors. Licence: [fonts/OFL-JetBrains-Mono.txt](fonts/OFL-JetBrains-Mono.txt) - Bricolage Grotesque: Copyright 2022 The Bricolage Grotesque Project Authors. Licence: [fonts/OFL-Bricolage-Grotesque.txt](fonts/OFL-Bricolage-Grotesque.txt) - Figtree: Copyright 2022 The Figtree Project Authors. Licence: [fonts/OFL-Figtree.txt](fonts/OFL-Figtree.txt) - Saira Stencil One: Copyright 2019 The Saira Stencil Project Authors. Licence: [fonts/OFL-Saira-Stencil-One.txt](fonts/OFL-Saira-Stencil-One.txt) - Barlow Condensed: Copyright 2017 The Barlow Project Authors. Licence: [fonts/OFL-Barlow-Condensed.txt](fonts/OFL-Barlow-Condensed.txt) - Black Han Sans: Copyright 2015 The Black Han Sans Project Authors. Licence: [fonts/OFL-Black-Han-Sans.txt](fonts/OFL-Black-Han-Sans.txt) The font files were subset to Latin characters (Black Han Sans: Latin plus the Hangul syllables of Korean Metro's headings) and converted to WOFF or WOFF2, as the licence permits. They are not covered by the GPL or by CC BY-SA. ## Korean Metro `korean-metro.html` (the Korean vocabulary and dialogue trainer) is not covered by the licences above: its licence is not yet assigned and is pending Stefan Waldvogel's decision. Its fonts are under the SIL OFL 1.1 as listed above. ## Your own work Plans, models and sites that you make with Castellan or Pré Carré belong to you. These licences do not apply to them, unless they contain parts of the examples (for instance a changed copy of an example), in which case those parts stay under CC BY-SA 4.0.