Raghu Nandakumara
Raghu Nandakumara is Senior Director of Industry Strategy at Illumio based in London, UK, where he is responsible for helping customers and prospects through their segmentation journeys. Previously, Raghu spent 15 years at Citibank, where he held several network security operations and engineering roles.
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Authored content
Japan’s Cloud Security Reality: Efficient on the Surface, Exposed Where It Matters Most
Discover how Japan’s efficient cloud security environments can hide lateral movement risks when visibility gaps leave east-west traffic and hybrid activity exposed.
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A Former White House CIO on Why Zero Trust Must Be Designed for How People Actually Work
Improve your Zero Trust strategy by focusing on user behavior to reduce cyber risk and deliver better security outcomes.
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Exploiting Human Trust Still Beats Hacking Code (And How Zero Trust Helps)
Learn how cybercriminals exploit human trust through social engineering and why Zero Trust is critical to limiting breaches and stopping lateral movement.
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AI Agents Are Becoming Digital Employees. Here’s How Zero Trust Secures Them.
Discover how Zero Trust secures AI agents and machine identities while giving organizations the guardrails needed to manage autonomous systems.
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From “Are You Protected?” to “Can You Operate?” Why Regulators Want Resilience, Not Just Controls
Discover how regulators are replacing checklist compliance with operational resilience, demanding proof of cyber containment and response under regulatory rules.
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Why Security Fundamentals Are the Most Overlooked Part of Adopting a Zero Trust Strategy
Explore why security fundamentals are the most overlooked part of Zero Trust and how getting the basics right determines whether breaches spiral or stay contained.
French Security Teams Detect Breaches Just Fine. So Why Are They Still Facing Downtime?
Learn why lateral movement still causes downtime in France, despite strong detection, rising budgets, and modern cloud security tools.
What Are You Waiting For? Delaying Cyber Modernization Is Putting You at Risk
Learn why former U.S. federal CIO Tony Scott says delaying cyber modernization is a leadership failure and how to act before a breach forces your hand.
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Germany’s Cloud Alert Volume Is the Highest in the World. Here's the Fix.
Discover why Germany receives the most cloud alerts worldwide, how that’s creating cybersecurity risk, and how teams can use Illumio Insights to improve threat response.
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Go Beyond the Audit: Achieve Continuous Compliance with Illumio + ServiceNow
Learn how risk-based microsegmentation with Illumio and ServiceNow strengthens cyber resilience and enables real-time, continuous compliance.
Australia’s Cloud Security Paradox: High Confidence, But Almost No Context
Explore why 40% of Australia’s cloud traffic lacks context, and how Illumio Insights helps security teams see, understand, and contain threats.
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5 Cybersecurity Leadership Lessons from Former Citi CISO Carl Froggett’s 30+ Year Career
Discover 5 powerful cybersecurity leadership lessons from former Citi CISO Carl Froggett, drawn from 30 years of innovation, AI, and resilience.
Assume Breach.
Minimize Impact.
Increase Resilience.
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