The Vendor Trust Framework. A Practitioner’s Guide to Evaluating Trust, Integrity and Operational Viability in Cybersecurity Vendors (en Inglés) - Eric K Thompson;Eric Thompson

Your vendor’s sales deck says they’re SOC 2 compliant, financially stable, and fully committed to your success. How much of that can you actually verify - and what happens when you can’t?

The Vendor Trust Framework is a practical guide for evaluating cybersecurity and technology vendors as companies, not just products. It gives CISOs, procurement teams, legal counsel, board-level readers, and risk leaders a repeatable method for separating what a vendor claims from what a vendor can prove - before a contract is signed, not after something goes wrong.

Most vendor risk failures don’t start with a technical vulnerability - they start with a claim nobody checked. A vendor can pass every security control on your checklist and still collapse financially, misrepresent its leadership team’s track record, or bury exit-rights limitations in contract language designed to be skimmed, not read. This book shows you where those failures hide and how to catch them before your organization inherits the consequences.

The framework is organized around nine pillars, each addressing a distinct dimension of vendor trust:

Corporate Legitimacy Is this company what it claims to be?

Financial Viability Will this vendor still exist in three years?

Product Claim Validation Does the product do what the marketing says?

Security and Compliance Maturity Is the compliance posture real or performative?

Engineering Discipline How does this vendor actually build and ship?

Support and Operational Readiness What happens when something breaks at 2 a.m.?

Data Governance and Exit Rights Can you get your data out, and on what terms?

Ethical Transparency What does this vendor hide, and why?

Leadership Maturity and Organizational Candor Does leadership own problems or spin them?

Drawing on more than 25 years of hands-on cybersecurity, network engineering, and vendor risk experience across enterprise, service provider, and mid-market environments, Eric Thompson translates real pattern recognition into a framework readers can apply immediately. Callouts throughout the book break down actual failure modes: SLA language engineered to sound protective while promising nothing, contract terms that quietly erode data portability, hidden storage limits disguised as generous defaults, and the gap between what a vendor’s leadership says publicly and how the company behaves under pressure.

This isn’t a compliance checklist, and it doesn’t replace frameworks like NIST SP 800-161 or the Shared Assessments SIG. It fills the gap those leave wide open: direct scrutiny of the vendor itself, as a company, not just a technical control set.

Whether you’re conducting your first formal third-party risk assessment or auditing a long-standing supply chain relationship you’ve never fully questioned, this book gives you the specific questions to ask and the due diligence process to back them up - turning vendor management from a paperwork exercise into an actual risk-reduction practice.

Trust the vendor. Verify everything.