VectorCertain LLC today announced the completion of manuscript preparation for The MYTHOS Playbook, a 34-chapter, 9-appendix technical reference designed to operationalize the new Five Eyes joint guidance on agentic AI security. The book, scheduled for June 2026 publication, provides CISOs and security architects with implementation-level detail for every risk class identified in the May 1, 2026 guidance co-authored by CISA, NSA, Australia's ASD ACSC, the Canadian Centre for Cyber Security, NZ NCSC, and UK NCSC.
The Five Eyes guidance identifies five risk classes: privilege, design and configuration, behavioral, structural, and accountability. VectorCertain's playbook maps each class to specific chapters and appendices, offering patent-form architectural patterns, a 119-cell cross-walk to existing frameworks such as NIST AI RMF, OWASP LLM Top 10, and CRI FS AI RMF, and a 12-clause vendor RFP language library. The detection methodology is built on 7,000 adversarial scenarios with 100% recall at a 3-sigma confidence level of ≥99.65% using Clopper-Pearson exact binomial intervals.
The market context underscores the urgency: Gartner projects AI agents will be embedded in 40% of enterprise applications by late 2026, and one in eight enterprise breaches now involves AI agents—a 340% year-over-year increase. The guidance itself notes that agentic AI systems 'may behave unexpectedly' and urges organizations to prioritize resilience and risk containment. VectorCertain founder Joseph P. Conroy emphasized that the playbook was independently derived from real-world incident analysis and converged with the Five Eyes taxonomy, validating both documents' threat models.
The playbook is structured in seven parts, including sections on architecture, vectors, frameworks, SOC operations, deployment, and appendices covering audit schemas and statistical worksheets. Pre-order interest registration is available at vectorcertain.com. VectorCertain's SecureAgent platform, which underpins the playbook's methodology, has achieved a false-positive rate of 1 in 160,000—53,333 times below the industry average—and block times under 10 milliseconds on detected pre-execution threats.
The publication positions The MYTHOS Playbook as the operational complement to policy-level guidance, filling the gap between principle and practice for critical-infrastructure CISOs. Appendix C's cross-walk matrix explicitly maps each Five Eyes risk class to NIST AI RMF, OWASP LLM Top 10, OWASP Agentic Top 10, CRI FS AI RMF, and MITRE ATLAS, enabling compliance teams to trace recommendations across frameworks. The book also includes a GTID hash-chained audit record sample at Appendix F, designed to satisfy accountability requirements for every agent decision.
Conroy said the playbook's risk taxonomy was independently derived from real-world incidents, including 698 AI deception incidents documented in the Centre for Long-Term Resilience's 'Scheming in the Wild' report. The convergence with the Five Eyes guidance, he noted, 'is the single strongest validation of both documents.' The playbook is now proceeding to June 2026 publication, with a companion volume for C-suite and board audiences following in Q2 2027.
