Making Zero Trust Architecture Achievable

How NIST is working with Tenable and other private sector stakeholders to better enable zero trust implementation.

Trust no one. Verify everything. All the time. When it comes to cybersecurity and protecting your expanding attack surface, that’s more than a catchphrase. It’s the way you must approach access to your network, systems and assets. Ultimately, this is an approach the federal government must use, expand upon and intertwine into its cybersecurity standards.

When thinking about zero trust, it’s important to understand this is an evolving practice that goes beyond traditional “trust but verify” approaches to cybersecurity. According to a Tenable blog by John Kindervag, who created the Zero Trust Model of Cybersecurity when he was a principal analyst at Forrester Research, “While the zero trust model represents a significant divergence from the legacy, moat-and-castle approach to network security, it can be implemented by practitioners using commercial off-the-shelf technology. And it's built upon current cyber best practices and sound cyber hygiene, such as vulnerability management, proactive patching and continuous monitoring, already implemented in most organizations today.”

It’s time to rethink the trust-but-verify model of cybersecurity

The principles of zero trust require rethinking the trust-but-verify model upon which so much IT infrastructure has been built. It calls for viewing trust as a vulnerability instead and calls for removing the notion of trust from digital systems.

Zero trust is a proactive cybersecurity approach. However, with anything proactive, it’s important to remember there is a constant need for adaptation and new protocols that can withstand the changing threat landscape.

On Dec. 4, NIST released the draft Guidance for Implementing Zero Trust Architecture for public comment. Tenable has been proud to work alongside the NIST National Cybersecurity Center of Excellence (NCCoE) to launch the Zero Trust Architecture Demonstration Project. This collaborative project has brought together multiple industry participants to launch end-to-end zero trust architecture implementations to help industry and government reduce the risk of cyberattacks. As part of this collaborative project, Tenable has participated in a lab demonstration of how to deploy examples of zero trust architecture in hybrid enterprise environments using commercially available technology contributions.

“The [...] demonstration project, 'Implementing a Zero Trust Architecture,' stands as a critical cybersecurity initiative that showcases the resilience of ZTAs across multiple practical implementations.”

—Alper Kerman, Security Engineer and Principal Lead of the NCCoE Zero Trust Project at NIST

“The NCCoE ZTA demonstration project, 'Implementing a Zero Trust Architecture,' stands as a critical cybersecurity initiative that showcases the resilience of ZTAs across multiple practical implementations,” explained Alper Kerman, Security Engineer and Principal Lead of the NCCoE Zero Trust Project at NIST. “Each implementation combines a strategic mix of commercially available products and services, contributed by partner organizations such as Tenable. Their invaluable role in providing enhanced visibility and insights has been essential in strengthening our defenses, ensuring we can safeguard our networks against the ever-evolving landscape of cyberthreats.”

As a main collaborator, Tenable contributed exposure management technology and capabilities for the ZTA Demonstration Protect. As a leader in cybersecurity, Tenable was able to harness its expertise to best use security analytics, building out a program that had orchestration and enforcement capabilities through scanning and assessment, endpoint monitoring, traffic inspection and network discovery.

When implementing a zero trust architecture, it is a foundational imperative for organizations and enterprises to inventory, enumerate and assess every asset on the network. This allows for a better understanding of assets in context and how they are interconnected. Analyzing data from operational technology (OT), internet of things (IoT), IT, cloud and network plays a critical role in helping organizations gain visibility into how assets are interconnected, evaluate exposure based on real-world threats and context, and prioritize remediation and mitigation efforts. Ultimately, it’s important for an organization to completely understand the entire attack surface in order to evaluate which assets are most vulnerable. Zero trust architecture is a way to programmatically collect risk telemetry and make informed decisions that can help reduce exposure. By adopting zero trust architecture approaches, it is possible to make significant progress toward this objective.

At Tenable, we are proud to partner with our government’s leading agencies to develop strategic ways to approach cybersecurity practices. Our technology solutions help the NCCoE develop a use case that exemplifies the ZTA motto — Trust no one. Verify everything. All the time. Organizations, enterprises and federal agencies need a security model that adapts to today’s modern network, embraces remote work and protects users, applications and data wherever they’re located. The NCCoE ZTA practice guide and reference architecture can serve as an outstanding model to help them achieve their cybersecurity objectives.

Learn more

• View the updated draft Guidance for Implementing a Zero Trust Architecture, released by NIST on Dec. 4
• Find out more about the Zero Trust Architecture demonstration project
• Download the SANS Institute white paper Navigating the Path to a State of Zero Trust in 2024