Zero Trust security models focus on continuous identity validation

Zero Trust security models, which replace location-based trust with continuous access requests, are being re-evaluated for their application in specific sectors like telecommunications and identity management.

In telecom networks, the National Institute of Standards and Technology (NIST) SP 800-207 framework can be implemented through existing Authentication, Authorization, and Accounting (AAA) layers. Rather than purchasing new products, operators can modernize AAA to act as the policy decision and enforcement points, managing subscriber sessions and devices like industrial IoT modules that cannot run standard security agents.

In the realm of identity security, experts warn against common misconceptions. Zero Trust is not a single product but a continuous process of identity validation. For example, the 2021 Colonial Pipeline attack, which resulted in a significant ransom payment and fuel disruptions, highlighted the dangers of legacy access that lacks continuous re-examination. Effective Zero Trust models focus on giving trust an expiry date through continuous authentication rather than simply denying all access.