The Zero Trust Hub

Trends, insights, and resources for today's cybersecurity leaders. Updated weekly.

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The Monday Microsegment

NEWS

Turning Cyber Blind Spots into Cyber Breakthroughs: Meet the AI Security Graph

Hybrid cloud blind spots are leaving security teams vulnerable — and overwhelmed. In this Forbes article, Illumio’s Mario Espinoza explains how a new AI-powered approach transforms raw network data into real-time threat insight and instant, effective incident response.

NEWS

Two Models, One Mission: Making Zero Trust Security Progress More Measurable

At the DoD Zero Trust Symposium, John Kindervag breaks down how the two leading maturity models — one focused on the protect surface and the other focused on security pillars — can work together. The goal? A Zero Trust strategy that gets stronger under attack.

Weekly Briefing

For Zero Trust Security, AI-Driven Context Always Beats AI-Generated Alerts

When I first read about last week’s ransomware attack on one of the largest dialysis providers in the U.S., my immediate reaction wasn’t technical — it was human.

Patients had their life-saving treatments delayed. Clinic operations halted. Critical data was encrypted. And the ripple effects of the attack stretched across multiple states.

And as more details emerged, something else became clear: this wasn’t an unknown threat actor exploiting a never-before-seen vulnerability. This was another case of lateral movement — attackers quietly progressing, undetected, through systems that were likely being monitored.

Ransomware attacks are inevitable, and the organization likely had visibility and security tools. But what they didn’t have was clarity into their network’s risk.

That’s the hard truth we’re facing in cybersecurity today. Seeing risk isn’t the same as understanding it. And in high-stakes environments — whether it’s healthcare, critical infrastructure, or finance — that difference can be measured in lives, not just data.

Why context is the real power of AI in cybersecurity

AI is everywhere in cybersecurity conversations right now. But let’s not confuse noise with signal.  

If your AI is just accelerating alert fatigue, it’s not helping.

Security teams don’t need more alerts. They need smarter ones. They need clarity, prioritization, and, most importantly, context.

That’s why organizations must shift from reacting to alerts to understanding the meaning behind them. In other words, it's not just knowing something happened. It's about understanding why it matters, how it happened, and what you need to do to stop it.

And when your cyber defense is powered by an AI security graph, you get the full picture — not just what’s happening, but where it’s happening, why, and how it connects to the rest of your environment.

From understanding risk to containing it

The ultimate goal isn’t just to see threats. It’s to contain them immediately and automatically.

That’s where segmentation comes in. With a security graph surfacing, prioritizing risk, and contextualizing the threat, you can dynamically enforce segmentation to isolate high-risk communications, stop lateral movement, and contain the breach.

This isn’t segmentation as a one-time setup. It’s segmentation as continuous breach containment — a living, evolving layer of defense that adjusts in real time to how your environment behaves and how attackers move.

That’s how you turn Zero Trust into action. You don’t just reduce risk. You actively control it.

Zero Trust is a mindset — and context makes it actionable

Zero Trust is about questioning every connection, every access request, and every dependency, every time. But to enforce Zero Trust effectively, you need real-time context to know whether behavior aligns with intent.

That’s where observability, powered by AI and driven by the security graph, becomes mission-critical.

Observability validates assumptions, surfaces deviations, and gives you the intelligence to adapt your policies based on what’s actually happening, not what you think should be happening.

The future of Zero Trust is context

We’re at a turning point in the cybersecurity industry. AI is changing what’s possible for both attackers and defenders.

But if we want to stay ahead, we need to use AI to better understand the current state of our environments. That’s the heart of Zero Trust: making security decisions based solely on the real-time context of every user, device, and workload.

It’s not just the future — it’s what Zero Trust has always been about, contextual, dynamic, and designed to protect what matters most before it’s too late.

CHART OF THE WEEK

In the Cyber Crossfire

According to the 2025 Global Cybersecurity Outlook, nearly 60% of organizations say geopolitical tensions have influenced their cybersecurity strategy. But CEOs and CISOs see the risks differently. While CEOs are most concerned about cyber espionage and IP theft, CISOs are focused on the potential for operational disruption.

Zero Trust Resources

eBook

Strategies for DORA Compliance: Key Role of Zero Trust Segmentation

Is your organization ready for the January 2025 DORA deadline? Discover key strategies for cyber resilience and how Illumio Zero Trust Segmentation simplifies compliance.

GUIDE

Zero Trust Segmentation for Dummies

Breaches are inevitable, but the damage isn’t. Zero Trust Segmentation for Dummies simplifies how to stop threats from spreading, protecting your organization before they cause harm.

REPORT

2025 Global Cost of Ransomware Study

Some 88% of organizations were hit by ransomware in the last year. Are your defenses ready to stand up to today’s ransomware threat? Uncover the real impact of ransomware and strategies to stay resilient against the next inevitable attack.

We’re changing the security landscape. Join Illumio at RSAC 2025 to see what’s next in breach containment.

Be among the first to see how our newest capabilities will transform the way security teams detect and contain breaches before they escalate.

Top contributors

John Kindervag

Chief Evangelist

Raghu Nandakumara

Head of Industry Solutions

Gary Barlet

Public Sector CTO

Trevor Dearing

Director of Critical Infrastructure Solutions

Michael Adjei

Director, Systems Engineering

Christer Swartz

Director of Industry Solutions