Zero Trust, or Zero Trust Access, is the term applied to the strategy that assumes you cannot trust the individual or device until verified.  The good guys, the bad guys, and all devices are the same and should not be trusted automatically. Proof of trust is verified with credentials.

The term was first coined in 1994 by Stephan Paul Marsh at the University of Stirling as part of his doctoral thesis focused on trust. Over the next ten years, it became part of the tech vernacular in defining the perimeter of security access.

Three Principles

While implementing a zero-trust strategy can happen differently, a zero-trust architecture will always have similar elements.

  • User/Application authentication – grouped since some actions are automated
  • Device authentication – consideration of access scenarios, will access be granted through a mobile phone, IoT device, different locations, etc
  • Trust layers – evaluation of access based on application layers rather than overall network access
  • Interaction – a way of duplicating verification through interactivity

These principles are modeled together on the “never trust, always verify” foundation. And that means they need to be verified even if connected to a corporate LAN. The complexity of today’s technology landscape means we cannot operate on any assumptions. Verification or validation should not be automatic because a device or login exists on a network.

Security From Start to Stop

Want to feel safer? Reynolds + Rowella’s Cybersecurity Team helps our clients identify gaps in their current security programs to stay ahead of threats. Additionally, we offer ongoing training programs and other resources that mitigate the risks that are found to prevent the likelihood of a cyber breach further. Contact us today to learn about the resources we can provide for your success and safety!

Reynolds + Rowella is a regional accounting and consulting firm known for a team approach to financial problem solving. As Certified Public Accountants, our partners foster a personal touch with our clients. As members of DFK International/USA, an association of accountants and advisors, our professional network is international, yet many of our clients have known us for years through the local communities we serve. Our mission is to operate as a financial services firm of outstanding quality. Our efforts are directed at serving our clients in the most efficient and responsive manner possible, delivering services that exceed the expectations of those we serve. The firm has offices at 90 Grove St., Ridgefield, Conn., and 51 Locust Ave., New Canaan, Conn. For more information, please contact Elizabeth Bresnan at 203.438.0161 or email.    


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