References and Sources
This section lists the sources cited throughout the book. The numbered source index, ordered by source number, is the canonical bibliography: every inline citation of the form (N, author or organisation, year) links to the entry with that number. The index is grouped by category so that readers can locate European legislation, frameworks, threat assessments and practitioner literature quickly.
Entries 1 to 81 were carried over, without their back-links, from the bibliography of AI Blue (Book 8); the access dates recorded there are kept and every entry is re-verified with scripts/verify_sources.py before release. Sources that no chapter of this book cites are removed by scripts/renumber_sources.py --apply before merge, and the new sources of this book are added in the reserved ranges recorded in HANDOVER.md.
Numbered source index
European legislation and policy
- Source [1]: European Parliament and Council of the European Union. Regulation (EU) 2024/1689 laying down harmonised rules on artificial intelligence (Artificial Intelligence Act). Official Journal of the European Union, 12 July 2024. Available at: https://eur-lex.europa.eu/eli/reg/2024/1689/oj (accessed 2026-10-31). Referenced in: Chapter 1: Introduction: The Purple Loop with AI, Chapter 6: Rules of Engagement and Safe Emulation: Scope, Blast Radius and the Stop Path, Chapter 12: Purple for AI Systems and Agents: Attacks on Models and Detections That Catch Them, Chapter 14: An AI Agent Team for the Loop: Skills, Mandates and Containment, Chapter 15: Independence: Verifying the Loop When AI Is on Both Sides, Chapter 16: Defending the Loop's AI: Scenario Libraries, Findings and Emulation Agents as Tier 0, Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights, Chapter 23: Red and Blue as People: Trust, Incentives, Safety and Wellbeing, Glossary.
- Source [2]: European Parliament and Council of the European Union. Regulation (EU) 2022/2554 on digital operational resilience for the financial sector (DORA). Official Journal of the European Union, 27 December 2022. Available at: https://eur-lex.europa.eu/eli/reg/2022/2554/oj (accessed 2026-10-31). Referenced in: Chapter 1: Introduction: The Purple Loop with AI, Chapter 2: What the Loop Did Before: Penetration Tests, Red Teams, Tabletops and Purple Sessions, Chapter 3: The Pressure on the Loop: Machine-Speed Adversaries, Detection Decay and the Annual Test, Chapter 4: The Purple Loop Defined: Five Stages, Evidence and the Independence Principle, Chapter 5: Target: Threat-Informed Scenarios, Risk and Priority Techniques, Chapter 6: Rules of Engagement and Safe Emulation: Scope, Blast Radius and the Stop Path, Chapter 7: Emulate: Adversary Emulation Plans, Human-Led and AI-Assisted, Chapter 8: Emulate Continuously: Breach-and-Attack Simulation, Atomic Tests and Automated Red Teaming, Chapter 9: Observe: Telemetry, Detection and Response Compared with Expectation, Chapter 10: Improve: From Finding to Change in Detections, Controls, Playbooks and Mandates, Chapter 13: Testing the Defenders' AI: SOC Agents, Playbooks and Providers' AI under Emulation, Chapter 14: An AI Agent Team for the Loop: Skills, Mandates and Containment, Chapter 15: Independence: Verifying the Loop When AI Is on Both Sides, Chapter 16: Defending the Loop's AI: Scenario Libraries, Findings and Emulation Agents as Tier 0, Chapter 17: Coverage as a Claim: Technique Maps, Evidence Age and Detection Decay, Chapter 18: Measuring the Loop: Cycle Time, Yield, Re-test Pass Rate and the Metrics That Mislead, Chapter 19: Operating Models and Team Design: In-House, Contracted, Hybrid and Sovereign Loops, Chapter 20: Decision Rights, Authorisation and the White Team, Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights, Chapter 22: Across Boundaries: Suppliers, Managed Providers, Sector Exercises and Authorities, Chapter 25: The Future of the Loop: Will Red and Blue Be Separate Teams in 2036?, Chapter 26: Case Studies and Anti-Patterns, Chapter 27: A Year in the Loop: Nordvik Region and Hansa Mutual, Chapter 28: Nordvik Region and Hansa Mutual: Conclusions for Two Organisations, Chapter 29: Conclusions: The Purple Loop with AI, Glossary.
- Source [3]: European Parliament and Council of the European Union. Directive (EU) 2022/2555 on measures for a high common level of cybersecurity across the Union (NIS 2 Directive). Official Journal of the European Union, 27 December 2022. Available at: https://eur-lex.europa.eu/eli/dir/2022/2555/oj (accessed 2026-10-31). Referenced in: Chapter 1: Introduction: The Purple Loop with AI, Chapter 4: The Purple Loop Defined: Five Stages, Evidence and the Independence Principle, Chapter 5: Target: Threat-Informed Scenarios, Risk and Priority Techniques, Chapter 6: Rules of Engagement and Safe Emulation: Scope, Blast Radius and the Stop Path, Chapter 7: Emulate: Adversary Emulation Plans, Human-Led and AI-Assisted, Chapter 8: Emulate Continuously: Breach-and-Attack Simulation, Atomic Tests and Automated Red Teaming, Chapter 9: Observe: Telemetry, Detection and Response Compared with Expectation, Chapter 10: Improve: From Finding to Change in Detections, Controls, Playbooks and Mandates, Chapter 11: Verify: Re-test, Regression and Evidence, Chapter 12: Purple for AI Systems and Agents: Attacks on Models and Detections That Catch Them, Chapter 13: Testing the Defenders' AI: SOC Agents, Playbooks and Providers' AI under Emulation, Chapter 14: An AI Agent Team for the Loop: Skills, Mandates and Containment, Chapter 15: Independence: Verifying the Loop When AI Is on Both Sides, Chapter 16: Defending the Loop's AI: Scenario Libraries, Findings and Emulation Agents as Tier 0, Chapter 17: Coverage as a Claim: Technique Maps, Evidence Age and Detection Decay, Chapter 18: Measuring the Loop: Cycle Time, Yield, Re-test Pass Rate and the Metrics That Mislead, Chapter 19: Operating Models and Team Design: In-House, Contracted, Hybrid and Sovereign Loops, Chapter 20: Decision Rights, Authorisation and the White Team, Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights, Chapter 22: Across Boundaries: Suppliers, Managed Providers, Sector Exercises and Authorities, Chapter 25: The Future of the Loop: Will Red and Blue Be Separate Teams in 2036?, Chapter 26: Case Studies and Anti-Patterns, Chapter 28: Nordvik Region and Hansa Mutual: Conclusions for Two Organisations, Chapter 29: Conclusions: The Purple Loop with AI, Glossary.
- Source [4]: European Commission. Commission Implementing Regulation (EU) 2024/2690 laying down rules for the application of Directive (EU) 2022/2555 as regards technical and methodological requirements of cybersecurity risk-management measures and further specification of the cases in which an incident is considered to be significant with regard to DNS service providers, TLD name registries, cloud computing service providers, data centre service providers, content delivery network providers, managed service providers, managed security service providers, providers of online market places, of online search engines and of social networking services platforms, and trust service providers. Official Journal of the European Union, 18 October 2024. Available at: https://eur-lex.europa.eu/eli/reg_impl/2024/2690/oj (accessed 2026-11-02). Referenced in: Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights.
- Source [5]: European Parliament and Council of the European Union. Regulation (EU) 2024/2847 on horizontal cybersecurity requirements for products with digital elements (Cyber Resilience Act). Official Journal of the European Union, 20 November 2024. Available at: https://eur-lex.europa.eu/eli/reg/2024/2847/oj (accessed 2026-10-31). Referenced in: Chapter 16: Defending the Loop's AI: Scenario Libraries, Findings and Emulation Agents as Tier 0, Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights, Chapter 22: Across Boundaries: Suppliers, Managed Providers, Sector Exercises and Authorities, Glossary.
- Source [6]: European Commission. The General-Purpose AI Code of Practice. European AI Office, 10 July 2025. Available at: https://digital-strategy.ec.europa.eu/en/policies/contents-code-gpai (accessed 2026-10-31). Referenced in: Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights.
- Source [7]: European Parliament and Council of the European Union. Regulation (EU) 2016/679 on the protection of natural persons with regard to the processing of personal data and on the free movement of such data (General Data Protection Regulation). Official Journal of the European Union, 4 May 2016. Available at: https://eur-lex.europa.eu/eli/reg/2016/679/oj (accessed 2026-11-06). Referenced in: Chapter 5: Target: Threat-Informed Scenarios, Risk and Priority Techniques, Chapter 6: Rules of Engagement and Safe Emulation: Scope, Blast Radius and the Stop Path, Chapter 9: Observe: Telemetry, Detection and Response Compared with Expectation, Chapter 12: Purple for AI Systems and Agents: Attacks on Models and Detections That Catch Them, Chapter 13: Testing the Defenders' AI: SOC Agents, Playbooks and Providers' AI under Emulation, Chapter 14: An AI Agent Team for the Loop: Skills, Mandates and Containment, Chapter 16: Defending the Loop's AI: Scenario Libraries, Findings and Emulation Agents as Tier 0, Chapter 18: Measuring the Loop: Cycle Time, Yield, Re-test Pass Rate and the Metrics That Mislead, Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights, Chapter 22: Across Boundaries: Suppliers, Managed Providers, Sector Exercises and Authorities, Chapter 23: Red and Blue as People: Trust, Incentives, Safety and Wellbeing, Chapter 24: Competences, Training and Keeping the Red Craft, Glossary.
- Source [8]: European Commission (2025). Commission Delegated Regulation (EU) 2025/1190 supplementing Regulation (EU) 2022/2554 of the European Parliament and of the Council with regard to regulatory technical standards specifying the criteria used for identifying financial entities required to perform threat-led penetration testing, the requirements and standards governing the use of internal testers, the requirements in relation to the scope, testing methodology and approach for each phase of the testing, results, closure and remediation stages and the type of supervisory and other relevant cooperation needed for the implementation of TLPT and for the facilitation of mutual recognition. Adopted 13 February 2025; Official Journal of the European Union, 18 June 2025. Available at: https://eur-lex.europa.eu/eli/reg_del/2025/1190/oj (accessed 2026-11-10). Referenced in: Chapter 1: Introduction: The Purple Loop with AI, Chapter 2: What the Loop Did Before: Penetration Tests, Red Teams, Tabletops and Purple Sessions, Chapter 3: The Pressure on the Loop: Machine-Speed Adversaries, Detection Decay and the Annual Test, Chapter 5: Target: Threat-Informed Scenarios, Risk and Priority Techniques, Chapter 6: Rules of Engagement and Safe Emulation: Scope, Blast Radius and the Stop Path, Chapter 7: Emulate: Adversary Emulation Plans, Human-Led and AI-Assisted, Chapter 11: Verify: Re-test, Regression and Evidence, Chapter 17: Coverage as a Claim: Technique Maps, Evidence Age and Detection Decay, Chapter 18: Measuring the Loop: Cycle Time, Yield, Re-test Pass Rate and the Metrics That Mislead, Chapter 19: Operating Models and Team Design: In-House, Contracted, Hybrid and Sovereign Loops, Chapter 20: Decision Rights, Authorisation and the White Team, Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights, Chapter 22: Across Boundaries: Suppliers, Managed Providers, Sector Exercises and Authorities, Chapter 25: The Future of the Loop: Will Red and Blue Be Separate Teams in 2036?, Chapter 29: Conclusions: The Purple Loop with AI, Glossary.
- Source [9]: European Parliament and Council of the European Union. Regulation (EU) 2026/1744 amending Regulations (EU) 2024/1689, (EU) 2018/1139 and (EU) 2023/1230 as regards the simplification of the implementation of harmonised rules on artificial intelligence (Digital Omnibus on AI). Official Journal of the European Union, 24 July 2026. Available at: https://eur-lex.europa.eu/eli/reg/2026/1744/oj (accessed 2026-11-10). Referenced in: Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights, Glossary.
- Source [10]: European Parliament and Council of the European Union. Directive 2013/40/EU on attacks against information systems and replacing Council Framework Decision 2005/222/JHA. Official Journal of the European Union, 14 August 2013. Available at: https://eur-lex.europa.eu/eli/dir/2013/40/oj (accessed 2026-11-10). Referenced in: Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights.
- Source [11]: Bundesrepublik Deutschland. Betriebsverfassungsgesetz (BetrVG), § 87 Mitbestimmungsrechte. Gesetze im Internet, Bundesministerium der Justiz. Available at: https://www.gesetze-im-internet.de/betrvg/__87.html (accessed 2026-11-10). Referenced in: Chapter 1: Introduction: The Purple Loop with AI, Chapter 6: Rules of Engagement and Safe Emulation: Scope, Blast Radius and the Stop Path, Chapter 18: Measuring the Loop: Cycle Time, Yield, Re-test Pass Rate and the Metrics That Mislead, Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights, Chapter 23: Red and Blue as People: Trust, Incentives, Safety and Wellbeing, Chapter 24: Competences, Training and Keeping the Red Craft.
- Source [12]: Bundesrepublik Deutschland. Strafgesetzbuch (StGB), § 202a Ausspähen von Daten. Gesetze im Internet, Bundesministerium der Justiz. Available at: https://www.gesetze-im-internet.de/stgb/__202a.html (accessed 2026-11-10). Referenced in: Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights.
- Source [13]: Bundesrepublik Deutschland. Strafgesetzbuch (StGB), § 202c Vorbereiten des Ausspähens und Abfangens von Daten. Gesetze im Internet, Bundesministerium der Justiz. Available at: https://www.gesetze-im-internet.de/stgb/__202c.html (accessed 2026-11-10). Referenced in: Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights.
- Source [14]: Sveriges riksdag. Brottsbalk (1962:700), 4 kap. 9 c § (dataintrång). Svensk författningssamling. Available at: https://www.riksdagen.se/sv/dokument-och-lagar/dokument/svensk-forfattningssamling/brottsbalk-1962700_sfs-1962-700/ (accessed 2026-11-10). Referenced in: Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights.
- Source [15]: Sveriges riksdag. Lag (1976:580) om medbestämmande i arbetslivet, 11 och 12 §§. Svensk författningssamling. Available at: https://www.riksdagen.se/sv/dokument-och-lagar/dokument/svensk-forfattningssamling/lag-1976580-om-medbestammande-i-arbetslivet_sfs-1976-580/ (accessed 2026-11-10). Referenced in: Chapter 18: Measuring the Loop: Cycle Time, Yield, Re-test Pass Rate and the Metrics That Mislead, Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights.
- Source [16]: Bundesarbeitsgericht (2022). Beschluss vom 8. März 2022, 1 ABR 20/21 (Technische Überwachungseinrichtung – Gesamtbetriebsrat; Mitbestimmung nach § 87 Abs. 1 Nr. 6 BetrVG bei der Einführung von Microsoft Office 365). Bundesarbeitsgericht. Available at: https://www.bundesarbeitsgericht.de/entscheidung/1-abr-20-21/ (accessed 2026-11-10). Referenced in: Chapter 1: Introduction: The Purple Loop with AI, Chapter 6: Rules of Engagement and Safe Emulation: Scope, Blast Radius and the Stop Path, Chapter 18: Measuring the Loop: Cycle Time, Yield, Re-test Pass Rate and the Metrics That Mislead, Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights, Chapter 23: Red and Blue as People: Trust, Incentives, Safety and Wellbeing.
Frameworks, standards and taxonomies
- Source [17]: MITRE Corporation. MITRE ATT&CK: Adversarial Tactics, Techniques, and Common Knowledge. Available at: https://attack.mitre.org/ (accessed 2026-11-02). Referenced in: Chapter 1: Introduction: The Purple Loop with AI, Chapter 2: What the Loop Did Before: Penetration Tests, Red Teams, Tabletops and Purple Sessions, Chapter 4: The Purple Loop Defined: Five Stages, Evidence and the Independence Principle, Chapter 5: Target: Threat-Informed Scenarios, Risk and Priority Techniques, Chapter 6: Rules of Engagement and Safe Emulation: Scope, Blast Radius and the Stop Path, Chapter 7: Emulate: Adversary Emulation Plans, Human-Led and AI-Assisted, Chapter 8: Emulate Continuously: Breach-and-Attack Simulation, Atomic Tests and Automated Red Teaming, Chapter 9: Observe: Telemetry, Detection and Response Compared with Expectation, Chapter 11: Verify: Re-test, Regression and Evidence, Chapter 16: Defending the Loop's AI: Scenario Libraries, Findings and Emulation Agents as Tier 0, Chapter 24: Competences, Training and Keeping the Red Craft, Chapter 26: Case Studies and Anti-Patterns, Chapter 27: A Year in the Loop: Nordvik Region and Hansa Mutual, Glossary.
- Source [18]: MITRE Corporation. MITRE ATLAS: Adversarial Threat Landscape for AI Systems. Available at: https://atlas.mitre.org/ (accessed 2026-10-31). Referenced in: Chapter 1: Introduction: The Purple Loop with AI, Chapter 4: The Purple Loop Defined: Five Stages, Evidence and the Independence Principle, Chapter 5: Target: Threat-Informed Scenarios, Risk and Priority Techniques, Chapter 6: Rules of Engagement and Safe Emulation: Scope, Blast Radius and the Stop Path, Chapter 7: Emulate: Adversary Emulation Plans, Human-Led and AI-Assisted, Chapter 12: Purple for AI Systems and Agents: Attacks on Models and Detections That Catch Them, Chapter 13: Testing the Defenders' AI: SOC Agents, Playbooks and Providers' AI under Emulation, Chapter 14: An AI Agent Team for the Loop: Skills, Mandates and Containment, Chapter 16: Defending the Loop's AI: Scenario Libraries, Findings and Emulation Agents as Tier 0, Glossary.
- Source [19]: MITRE Corporation. MITRE D3FEND: A knowledge graph of cybersecurity countermeasures. Available at: https://d3fend.mitre.org/ (accessed 2026-11-02). Referenced in: Chapter 5: Target: Threat-Informed Scenarios, Risk and Priority Techniques, Glossary.
- Source [20]: European Central Bank. TIBER-EU: Threat Intelligence-Based Ethical Red Teaming framework. ECB, framework document dated January 2025 (the web page records an update to align with the DORA threat-led testing standards). Available at: https://www.ecb.europa.eu/paym/cyber-resilience/tiber-eu/html/index.en.html (accessed 2026-11-02). Referenced in: Chapter 1: Introduction: The Purple Loop with AI, Chapter 2: What the Loop Did Before: Penetration Tests, Red Teams, Tabletops and Purple Sessions, Chapter 3: The Pressure on the Loop: Machine-Speed Adversaries, Detection Decay and the Annual Test, Chapter 4: The Purple Loop Defined: Five Stages, Evidence and the Independence Principle, Chapter 5: Target: Threat-Informed Scenarios, Risk and Priority Techniques, Chapter 6: Rules of Engagement and Safe Emulation: Scope, Blast Radius and the Stop Path, Chapter 7: Emulate: Adversary Emulation Plans, Human-Led and AI-Assisted, Chapter 8: Emulate Continuously: Breach-and-Attack Simulation, Atomic Tests and Automated Red Teaming, Chapter 9: Observe: Telemetry, Detection and Response Compared with Expectation, Chapter 10: Improve: From Finding to Change in Detections, Controls, Playbooks and Mandates, Chapter 11: Verify: Re-test, Regression and Evidence, Chapter 14: An AI Agent Team for the Loop: Skills, Mandates and Containment, Chapter 15: Independence: Verifying the Loop When AI Is on Both Sides, Chapter 16: Defending the Loop's AI: Scenario Libraries, Findings and Emulation Agents as Tier 0, Chapter 19: Operating Models and Team Design: In-House, Contracted, Hybrid and Sovereign Loops, Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights, Chapter 22: Across Boundaries: Suppliers, Managed Providers, Sector Exercises and Authorities, Glossary.
- Source [21]: OWASP Foundation. OWASP Top 10 for Large Language Model Applications, 2025 edition. OWASP GenAI Security Project. Available at: https://genai.owasp.org/llm-top-10/ (accessed 2026-10-31). Referenced in: Chapter 5: Target: Threat-Informed Scenarios, Risk and Priority Techniques, Chapter 12: Purple for AI Systems and Agents: Attacks on Models and Detections That Catch Them, Chapter 16: Defending the Loop's AI: Scenario Libraries, Findings and Emulation Agents as Tier 0.
- Source [22]: OWASP Foundation (2025). OWASP Top 10 for Agentic Applications for 2026. OWASP GenAI Security Project, 9 December 2025. Available at: https://genai.owasp.org/resource/owasp-top-10-for-agentic-applications-for-2026/ (accessed 2026-11-01). Referenced in: Chapter 5: Target: Threat-Informed Scenarios, Risk and Priority Techniques, Chapter 12: Purple for AI Systems and Agents: Attacks on Models and Detections That Catch Them, Chapter 13: Testing the Defenders' AI: SOC Agents, Playbooks and Providers' AI under Emulation, Chapter 14: An AI Agent Team for the Loop: Skills, Mandates and Containment, Chapter 16: Defending the Loop's AI: Scenario Libraries, Findings and Emulation Agents as Tier 0.
- Source [23]: Vassilev, A., Oprea, A., Fordyce, A., Anderson, H., Davies, X. & Hamin, M. (2025). Adversarial Machine Learning: A Taxonomy and Terminology of Attacks and Mitigations. NIST AI 100-2 E2025. National Institute of Standards and Technology, 24 March 2025. Available at: https://doi.org/10.6028/NIST.AI.100-2e2025 (accessed 2026-11-01). Referenced in: Chapter 12: Purple for AI Systems and Agents: Attacks on Models and Detections That Catch Them.
- Source [24]: NIST. The NIST Cybersecurity Framework (CSF) 2.0. NIST CSWP 29, 26 February 2024. Available at: https://doi.org/10.6028/NIST.CSWP.29 (accessed 2026-10-30). Referenced in: Chapter 1: Introduction: The Purple Loop with AI, Chapter 4: The Purple Loop Defined: Five Stages, Evidence and the Independence Principle, Chapter 17: Coverage as a Claim: Technique Maps, Evidence Age and Detection Decay.
- Source [25]: National Institute of Standards and Technology. Cybersecurity Framework Profile for Artificial Intelligence (Cyber AI Profile). NIST IR 8596, initial preliminary draft, 16 December 2025. Available at: https://csrc.nist.gov/pubs/ir/8596/iprd (accessed 2026-11-02).
- Source [26]: Rose, S., Borchert, O., Mitchell, S. & Connelly, S. Zero Trust Architecture. NIST Special Publication 800-207, August 2020. Available at: https://doi.org/10.6028/NIST.SP.800-207 (accessed 2026-10-30). Referenced in: Chapter 16: Defending the Loop's AI: Scenario Libraries, Findings and Emulation Agents as Tier 0.
- Source [27]: OASIS Cyber Threat Intelligence (CTI) TC. STIX Version 2.1 and TAXII Version 2.1. OASIS Standards, approved 10 June 2021. Available at: https://docs.oasis-open.org/cti/stix/v2.1/os/stix-v2.1-os.html and https://docs.oasis-open.org/cti/taxii/v2.1/os/taxii-v2.1-os.html (accessed 2026-10-30). Referenced in: Chapter 5: Target: Threat-Informed Scenarios, Risk and Priority Techniques, Chapter 22: Across Boundaries: Suppliers, Managed Providers, Sector Exercises and Authorities.
- Source [28]: Cybersecurity and Infrastructure Security Agency. Known Exploited Vulnerabilities Catalog. CISA. Available at: https://www.cisa.gov/known-exploited-vulnerabilities-catalog (accessed 2026-11-01). Referenced in: Chapter 8: Emulate Continuously: Breach-and-Attack Simulation, Atomic Tests and Automated Red Teaming.
- Source [29]: European Union Agency for Cybersecurity (2025). European Vulnerability Database (EUVD). Launched 13 May 2025 under the NIS 2 Directive. Available at: https://euvd.enisa.europa.eu/ (accessed 2026-11-01). Referenced in: Chapter 22: Across Boundaries: Suppliers, Managed Providers, Sector Exercises and Authorities.
- Source [30]: SigmaHQ. Sigma: Generic Signature Format for SIEM Systems. Open-source detection rule specification and rule repository. Available at: https://github.com/SigmaHQ/sigma (accessed 2026-11-02). Referenced in: Chapter 5: Target: Threat-Informed Scenarios, Risk and Priority Techniques, Chapter 10: Improve: From Finding to Change in Detections, Controls, Playbooks and Mandates, Chapter 16: Defending the Loop's AI: Scenario Libraries, Findings and Emulation Agents as Tier 0, Chapter 22: Across Boundaries: Suppliers, Managed Providers, Sector Exercises and Authorities.
- Source [31]: Center for Threat-Informed Defense (2024). Top ATT&CK Techniques. Center for Threat-Informed Defense, MITRE Engenuity, project website and methodology (© 2022, 2024 MITRE). Available at: https://center-for-threat-informed-defense.github.io/top-attack-techniques/ (accessed 2026-11-10). Referenced in: Chapter 5: Target: Threat-Informed Scenarios, Risk and Priority Techniques.
- Source [32]: Red Canary. Atomic Red Team: a library of tests mapped to the MITRE ATT&CK framework. Open-source project, MIT licence. Available at: https://github.com/redcanaryco/atomic-red-team (accessed 2026-11-10). Referenced in: Chapter 1: Introduction: The Purple Loop with AI, Chapter 2: What the Loop Did Before: Penetration Tests, Red Teams, Tabletops and Purple Sessions, Chapter 8: Emulate Continuously: Breach-and-Attack Simulation, Atomic Tests and Automated Red Teaming, Chapter 19: Operating Models and Team Design: In-House, Contracted, Hybrid and Sovereign Loops, Chapter 25: The Future of the Loop: Will Red and Blue Be Separate Teams in 2036?.
- Source [33]: MITRE Corporation. MITRE Caldera: a platform for automating adversary emulation, assisting manual red teams and automating incident response. Open-source project built on MITRE ATT&CK, Apache-2.0 licence. Available at: https://github.com/mitre/caldera (accessed 2026-11-10). Referenced in: Chapter 1: Introduction: The Purple Loop with AI, Chapter 2: What the Loop Did Before: Penetration Tests, Red Teams, Tabletops and Purple Sessions, Chapter 8: Emulate Continuously: Breach-and-Attack Simulation, Atomic Tests and Automated Red Teaming, Chapter 19: Operating Models and Team Design: In-House, Contracted, Hybrid and Sovereign Loops, Chapter 25: The Future of the Loop: Will Red and Blue Be Separate Teams in 2036?.
- Source [34]: European Central Bank (2025). TIBER-EU Purple Teaming Guidance. ECB, January 2025 (supersedes the TIBER-EU Purple Teaming Best Practices of July 2022). Available at: https://www.ecb.europa.eu/pub/pdf/annex/ecb.tiber_eu_purple_best_practices_2025.en.pdf (accessed 2026-11-10). Referenced in: Chapter 1: Introduction: The Purple Loop with AI, Chapter 2: What the Loop Did Before: Penetration Tests, Red Teams, Tabletops and Purple Sessions, Chapter 9: Observe: Telemetry, Detection and Response Compared with Expectation, Chapter 20: Decision Rights, Authorisation and the White Team, Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights, Chapter 22: Across Boundaries: Suppliers, Managed Providers, Sector Exercises and Authorities, Chapter 23: Red and Blue as People: Trust, Incentives, Safety and Wellbeing, Chapter 24: Competences, Training and Keeping the Red Craft, Chapter 25: The Future of the Loop: Will Red and Blue Be Separate Teams in 2036?, Chapter 26: Case Studies and Anti-Patterns.
- Source [35]: OpenTelemetry. Semantic conventions for generative AI systems. OpenTelemetry Semantic Conventions for generative AI, which cover spans, metrics and events for generative AI clients and conventions for the Model Context Protocol; maintained in the repository open-telemetry/semantic-conventions-genai. Available at: https://github.com/open-telemetry/semantic-conventions-genai (accessed 2026-11-10). Referenced in: Chapter 12: Purple for AI Systems and Agents: Attacks on Models and Detections That Catch Them.
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Threat assessments and agency guidance
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AI-enabled threats and exploitation timelines
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AI-assisted defence and vulnerability discovery
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Agents, containment and AI incidents
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Books and practitioner literature
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- Source [82]: Manheim, D. & Garrabrant, S. (2018, revised 2019). Categorizing Variants of Goodhart's Law. arXiv:1803.04585 (preprint). Distinguishes regressional, extremal, causal and adversarial variants of the effect that optimising a measure undermines it. Available at: https://arxiv.org/abs/1803.04585 (accessed 2026-11-10). Referenced in: Chapter 18: Measuring the Loop: Cycle Time, Yield, Re-test Pass Rate and the Metrics That Mislead.
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- Source [85]: Lunney, J. & Lueder, S. (2017). Postmortem Culture: Learning from Failure. Chapter 15 in Beyer, B., Jones, C., Petoff, J. & Murphy, N. R. (eds), Site Reliability Engineering: How Google Runs Production Systems. O'Reilly Media. Available at: https://sre.google/sre-book/postmortem-culture/ (accessed 2026-11-10). Referenced in: Chapter 23: Red and Blue as People: Trust, Incentives, Safety and Wellbeing.
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The Transformed Architecture and the author
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- Source [89]: Nordqvist, G. (2026). AI Platform and Security: Building and Securing AI Platforms in European Enterprises and Public Authorities. The Transformed Architecture, Book 3. Available at: https://aips.geon.se (accessed 2026-11-01). Conceived and directed by Nordqvist; text written by AI agents. Referenced in: Chapter 3: The Pressure on the Loop: Machine-Speed Adversaries, Detection Decay and the Annual Test, Chapter 6: Rules of Engagement and Safe Emulation: Scope, Blast Radius and the Stop Path, Chapter 7: Emulate: Adversary Emulation Plans, Human-Led and AI-Assisted, Chapter 8: Emulate Continuously: Breach-and-Attack Simulation, Atomic Tests and Automated Red Teaming, Chapter 11: Verify: Re-test, Regression and Evidence, Chapter 12: Purple for AI Systems and Agents: Attacks on Models and Detections That Catch Them, Chapter 14: An AI Agent Team for the Loop: Skills, Mandates and Containment, Chapter 16: Defending the Loop's AI: Scenario Libraries, Findings and Emulation Agents as Tier 0, Chapter 19: Operating Models and Team Design: In-House, Contracted, Hybrid and Sovereign Loops, Chapter 21: Regulation as Constraint: DORA, TIBER-EU, NIS 2, the AI Act, the GDPR and Employee Rights, Chapter 22: Across Boundaries: Suppliers, Managed Providers, Sector Exercises and Authorities, About the Author.
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Security operations, workforce and automation research
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