Purdue vs Zero Trust in OT security

The Purdue Model has long served as a foundation for securing OT environments, but its limitations in addressing modern cyber threats are evident. Zero Trust enhances OT security by enforcing strict access controls, continuous monitoring, and micro-segmentation.

Trust people, not packets

Let’s clear something up right away: Zero Trust does not mean we don’t trust people. It means we don’t blindly trust the digital traffic moving through our networks. And yes, that distinction matters, a lot.

An image showing the title of the blog (Zero Trust: A New Year's resolution worth keeping) as well as an image of a list of 2025 resolutions.

Zero Trust: A New Year’s resolution worth keeping

As the year draws to a close, it’s time to reflect on the past 12 months and make plans for the year ahead. For those of us in cybersecurity, the question is clear: what did we do to strengthen our security posture this year, and how can we do even better next year?