VectorCertain LLC today announced the completion of manuscript preparation for The MYTHOS Playbook, a 34-chapter technical reference designed to operationalize the new Five Eyes joint guidance on agentic AI security. The book, which closes its 17-sprint development cycle and proceeds to June 2026 publication, maps directly to every risk category identified in the May 1, 2026 guidance co-authored by CISA, NSA, and agencies from Australia, Canada, New Zealand, and the United Kingdom.
The Five Eyes guidance identifies five risk classes—privilege, design and configuration, behavioral, structural, and accountability—and represents the first coordinated multi-government security guidance specifically addressing autonomous AI systems. According to VectorCertain, The MYTHOS Playbook provides the technical implementation reference that critical-infrastructure CISOs can adopt, including a 119-cell cross-walk matrix in Appendix C that maps across NIST AI RMF, OWASP LLM Top 10, OWASP Agentic Top 10, CRI FS AI RMF, and MITRE ATLAS.
VectorCertain'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 at least 99.65%. The company reports that one in eight enterprise breaches now involves AI agents—a 340% year-over-year surge—with 78% of compromised agents over-permissioned, validating the privilege risks the Five Eyes guidance prioritizes.
Joseph P. Conroy, Founder and CEO of VectorCertain, said: “The Five Eyes did the hard policy work—establishing that agentic AI risk is a national-security-grade concern across all five member nations, simultaneously. The MYTHOS Playbook is the operational complement: the technical reference a CISO can hand to a security architect, who can then specify enforcement at deployment depth.”
The book is structured in seven parts and nine appendices spanning approximately 450,000 words. Part II covers architecture with a 5-layer governance pipeline and patent-form gates. Part III details a seven-vector behavioral threat taxonomy. Part IV provides statistical detection methodology including HOTS Homology with 81.4% deception-detection precision. Appendix G delivers a 12-clause vendor RFP language library, and Appendix F provides a complete GTID audit-record sample with hash-chained tamper-evidence.
The manuscript was drafted independently of the Five Eyes publication. VectorCertain notes that the convergent risk taxonomy represents independent operational validation of both documents. The Cloud Security Alliance's MAESTRO threat-modeling framework, introduced in February 2025, also maps to the Five Eyes risk classes with similar fidelity, further reinforcing convergence.
VectorCertain's SecureAgent platform, which underlies the Playbook's architectural commitments, has logged 14,208 internal trials across 38 techniques and 3 adversary profiles with zero failures, achieving a false-positive rate of 1 in 160,000—53,333 times below the EDR industry average. The platform's block-time on detected pre-execution threats is under 10 milliseconds.
The patent portfolio underlying the book includes 55 patents in a hub-and-spoke structure, with consolidated valuation ranging from $285 million to $1.55 billion. The hub patents include HCF2 (Application #63/972,767), MRM-CFS (Application #63/972,773), and others filed January 30, 2026.
For more information, visit vectorcertain.com. The Five Eyes joint guidance is available at CISA's announcement.
