VectorCertain LLC today announced the completion of manuscript-prep for The MYTHOS Playbook, a 34-chapter, 9-appendix technical reference designed for CISOs, security architects, and AI governance program leads operationalizing the new joint Five Eyes guidance on agentic AI security. The book closes its 17-sprint development cycle today and proceeds to June 2026 publication.
The Five Eyes guidance, "Careful Adoption of Agentic AI Services," published May 1, 2026, by CISA, NSA, Australia's ASD ACSC, the Canadian Centre for Cyber Security, NZ NCSC, and UK NCSC, identifies five risk classes: privilege, design and configuration, behavioral, structural, and accountability. The MYTHOS Playbook maps each risk class to specific chapters and appendices, providing operational depth beyond the policy-level recommendations.
According to VectorCertain, the Playbook's detection methodology rests on Clopper-Pearson exact binomial confidence intervals computed across 7,000 adversarial scenarios with 100% recall and a 3-sigma lower bound of ≥99.65% at 99.7% confidence. The book includes a 119-cell framework cross-walk matrix (Appendix C) mapping Five Eyes risk classes to NIST AI RMF, OWASP LLM Top 10, OWASP Agentic Top 10, CRI FS AI RMF, and MITRE ATLAS.
The market context underscores the urgency: Gartner projects AI agents will be embedded in 40% of enterprise applications by end of 2026, and one in eight enterprise breaches now involves AI agents—a 340% year-over-year increase, with 78% of compromised agents over-permissioned, validating the privilege risks the Five Eyes guidance prioritizes.
VectorCertain founder Joseph P. Conroy emphasized the convergent independent derivation: "The Five Eyes did the hard policy work—establishing that agentic AI risk is a national-security-grade concern across all five member nations. The MYTHOS Playbook is the operational complement: the technical reference a CISO can hand to a security architect."
The Playbook's 7-vector behavioral threat taxonomy (Part III) was independently derived from real-world incident analysis, including 698 AI deception incidents catalogued in CLTR's "Scheming in the Wild" report. When the Five Eyes guidance was published, its five risk classes mapped cleanly onto the Playbook's existing structural commitments without retrofit, indicating convergent validation.
Key operational features include vendor RFP language (Appendix G), statistical detection methodology (Part IV), architectural patterns (Part II), and hash-chained audit records (Appendix F). The book is structured in 7 parts plus 9 appendices, spanning approximately 450,000 words.
"The agencies have stated this is a national-security-grade concern. CISOs need more than principles—they need patent-form architecture, statistical foundations, vendor language, and framework cross-walks they can adopt today," Conroy added. The patent portfolio underlying the book includes 55 patents (21 filed) valued between $285 million and $1.55 billion.
Pre-order interest registration is open at vectorcertain.com. The companion volume, "After MYTHOS: The C-Suite and Board Volume," follows in Q2 2027.
