The Segment: A Zero Trust Leadership Podcast

In this episode of The Segment, host Raghu Nandakumara sits down with Carl Froggett, Chief Information Officer at Deep Instinct, the first company to apply end-to-end deep learning to cybersecurity.With nearly three decades of experience — including over 20 years at Citi leading global infrastructure defense and cybersecurity services — Carl brings a rare, full-circle perspective on how the cyber landscape, leadership, and culture have evolved from the early 2000s to today’s AI-driven world.You’ll learn:How Carl “accidentally” fell into cybersecurity — and what the early days of firewalls and compliance-driven security looked like What it was like to pioneer one of Citi’s first dedicated cyber teams Lessons in leadership from iconic figures like Charles Blauner, Greg Lavender, and John Miller How Citi became an early adopter of technologies like Palo Alto Networks, Splunk, CrowdStrike, and Illumio Why building business alignment and trust matters more than ever for CISOs How to frame security risks in business terms — and where many leaders go wrong The massive shift from machine learning to deep learning in cybersecurity How generative AI and “dark AI” are redefining the threat landscape — and why the next era of defense demands a mindset change Packed with nostalgia, hard-won wisdom, and forward-looking insight, this episode bridges cybersecurity history, human leadership, and the AI-powered future ahead.Stay Connected with our host, Raghu on LinkedInFor more information about Illumio, check out our website at illumio.com 

The Monday Microsegment for the week of October 27th. All the cybersecurity news you need to stay ahead, from Illumio's The Segment podcast.Patch Tuesday just got a zero-dayNuclear secrets exposed through a SharePoint holeFormer cybersecurity executive charged with selling secrets to RussiaAnd Gary Barlet joins us for an "Ask the Expert" segment. Head to The Zero Trust Hub: hub.illumio.comDownload The 2025 Global Cloud Detection and Response Report: https://www.illumio.com/resource-center/global-cloud-detection-and-response-report-2025 

The Monday Microsegment for the week of October 20th. All the cybersecurity news you need to stay ahead, from Illumio's The Segment podcast.F5 breach shakes confidence in core cyber defensesEurope takes down a SIM-farm empireAnd China flips the script with hacking accusation against the U.S.And Gary Barlet joins us for an "Ask the Expert" segment. Head to The Zero Trust Hub: hub.illumio.comDownload The 2025 Global Cloud Detection and Response Report: https://www.illumio.com/resource-center/global-cloud-detection-and-response-report-2025 

The Monday Microsegment for the week of October 13th. All the cybersecurity news you need to stay ahead, from Illumio's The Segment podcast.New details on a serious Oracle vulnerabilityMama mia! Nintendo faces a possible data leakAnd payroll pirates plunder HR accounts. Argh.And Gary Barlet joins us for an "Ask the Expert" segment. Head to The Zero Trust Hub: hub.illumio.comDownload The 2025 Global Cloud Detection and Response Report: https://www.illumio.com/resource-center/global-cloud-detection-and-response-report-2025 

The Monday Microsegment for the week of October 6th. All the cybersecurity news you need to stay ahead, from Illumio's The Segment podcast.Hackers hit Oracle customers with extortion emails.CISA’s lights are still on, but most of its defenders are home on furlough.And Palo Alto login portals face a flood of suspicious scans.And Christer Swartz joins us for a "Boos and Bravos" segment. Head to The Zero Trust Hub: hub.illumio.comDownload The 2025 Global Cloud Detection and Response Report: https://www.illumio.com/resource-center/global-cloud-detection-and-response-report-2025 

The Monday Microsegment for the week of September 29th. All the cybersecurity news you need to stay ahead, from Illumio's The Segment podcast.CISA orders an emergency patch after attackers weaponize Cisco firewall flaws.AI and malware are working hand-in-hand, but it’s not actually romanticAnd a string of new breaches could ruin the friendship between customers and major brands.And Michael Adjei joins us for an "Ask the Expert" segment. Head to The Zero Trust Hub: hub.illumio.comRegister to attend The Illumio World Tour: https://www.illumio.com/illumio-world-tour 

The Monday Microsegment for the week of September 22nd. All the cybersecurity news you need to stay ahead, from Illumio's The Segment podcast.Travel chaos across Europe after attackers hit airport systemsFactories remain stalled as Jaguar Land Rover hack drags onAnd key cyber intel-sharing law hits a snag in the SenateAnd Scott Smith joins us for a "View from the Street" segment. Head to The Zero Trust Hub: hub.illumio.comRegister to attend The Illumio World Tour: https://www.illumio.com/illumio-world-tour 

In this episode of The Segment, host Raghu Nandakumara sits down with Greg Mitchell, Application Administration Manager at STCU, for a candid, insightful look at what it really takes to drive security and innovation inside a modern, mission-driven financial institution.Greg shares how his team is building resilience from the inside out—applying zero trust principles not as a buzzword, but as a practical, culture-driven framework for protecting core systems. From his roots in school district IT to leading major modernization efforts at STCU, Greg walks us through what it means to lead with intention, assume breach, and drive results with lean teams and strong partnerships.You’ll learn:Why disaster recovery isn’t a one-time exercise, but a team muscle worth training How segmentation led to better cross-team relationships—not just better security The power of small wins (and small apps) to kickstart transformation Why enforcement beats perfection when it comes to securing infrastructure What zero trust really looks like in day-to-day operations—and how to start using tools you already have How STCU is approaching cloud expansion with Illumio 🔐 “Treat it like a business priority, not just a security one.” — Greg Michel This is the employee community you didn’t know you needed—where mindset, momentum, and people-first security converge. Stay Connected with our host, Raghu on LinkedInFor more information about Illumio, check out our website at illumio.com 

The Monday Microsegment for the week of September 15th. All the cybersecurity news you need to stay ahead, from Illumio's The Segment podcast.FInsurance claims show ransomware is still king — but AI is giving phishing a major boost.DoubleDragon goes to Washington, posing as a U.S. lawmaker.And scam factories in Asia hit with the U.S. sanctions hammer.And John Kindervag joins us for an "Ask the Expert" segment. Head to The Zero Trust Hub: hub.illumio.comRegister to attend The Illumio World Tour: https://www.illumio.com/illumio-world-tour

The Monday Microsegment for the week of September 1st. All the cybersecurity news you need to stay ahead, from Illumio's The Segment podcast.Fallout continues from the Salesforce-Salesloft supply chain breach.A cyberattack clips the claws of Jaguar Land Rover.Congress races the clock to keep cyber threat intel sharing alive.And Christer Swartz joins us for a "Boos and Bravos" segment. Head to The Zero Trust Hub: hub.illumio.comRegister to attend The Illumio World Tour: https://www.illumio.com/illumio-world-tour

The Monday Microsegment for the week of September 1st. All the cybersecurity news you need to stay ahead, from Illumio's The Segment podcast.Federal agencies scramble in the wake of major cyber lapses.A new ransomware strain uses AI to write its own attacks in real time.And to keep rivals out, hackers are patching the very security flaws they exploit.And John Kindervag joins us for an "Ask the Expert" segment. Head to The Zero Trust Hub: hub.illumio.comRegister to attend The Illumio World Tour: https://www.illumio.com/illumio-world-tour

The Monday Microsegment for the week of August 25th. All the cybersecurity news you need to stay ahead, from Illumio's The Segment podcast.Android VPNs promised users privacy — and tracked them instead.That urgent call from the boss? It may not be the boss.And Apple zero-day flaw makes a picture worth a thousand lines of malicious code.And Trevor Dearing joins us for a "Myth Buster" segment. Head to The Zero Trust Hub: hub.illumio.comRegister to attend The Illumio World Tour: https://www.illumio.com/illumio-world-tour

Recorded live at Black Hat 2025, this episode takes you straight to the frontlines of cybersecurity innovation. Host, Raghu Nandakumara first sits down with Bennett Moe, a cartographer turned N2K CyberWire VP, reveals how mapping skills can turn massive data into actionable cyber insights and why fundamentals still matter in an AI-driven world. Then, Jim Reavis, CEO of the Cloud Security Alliance and ISSA Hall of Famer, shares his urgent warning on cloud risks, the impact of generative AI, and why security leaders must rethink old playbooks.We discussed:How cartography principles help prioritize and visualize cybersecurity data The evolution of AI in security and where it’s moving beyond buzzwords Why fundamentals like security hygiene and the right people in the right roles are still critical Systemic risks in cloud environments and why old security playbooks may no longer suffice How security leaders can become their company’s most informed voices on AI The importance of actionable insights over overwhelming data for decision-makingThe role of cloud as a foundation for AI innovations like ChatGPT Distinguishing between securing AI and defending against AI-powered attacks How continuous learning, communication, and community collaboration are essential in cybersecurity The CSA’s mission and legacy as a navigator for the cybersecurity community  Stay Connected with our host, Raghu on LinkedInFor more information about Illumio, check out our website at illumio.com 

The Monday Microsegment for the week of August 18th. All the cybersecurity news you need to stay ahead, from Illumio's The Segment podcast.Windows admins, start your updates — the latest Patch Tuesday is a doozy.Hackers are packing RomCom exploits into a popular file-archiving app, but no one’s laughing.And phishers are turning stolen logins into stock pump-and-dump scams.And Aishwarya Ramani joins us for an "Ask the Expert" segment. Head to The Zero Trust Hub: hub.illumio.comRegister to attend The Illumio World Tour: https://www.illumio.com/illumio-world-tour

The Monday Microsegment for the week of August 11th. All the cybersecurity news you need to stay ahead, from Illumio's The Segment podcast.Federal courts scramble to tighten security after sealed files spill in cyber breach.Less than 24 hours in, ChatGPT-5 is already breaking bad.And federal agencies: today's the deadline to apply a critical Exchange fix.And Christer Swartz joins us for an "Ask the Expert" segment. Head to The Zero Trust Hub: hub.illumio.comRegister to attend The Illumio World Tour: https://www.illumio.com/illumio-world-tour

The Monday Microsegment for the week of August 4th. All the cybersecurity news you need to stay ahead, from Illumio's The Segment podcast.A cyberattack shuts down the city of St. Paul — and draws in the National Guard.Spiders and dragons and rats — oh my! U.S. authorities issue new cybersecurity warning.And AI-powered bots are making DDoS attacks almost as easy as cheating on your homework.And John Kindervag joins us for a "Kindervag's Compass" segment. Head to The Zero Trust Hub: hub.illumio.comRegister to attend The Illumio World Tour: https://www.illumio.com/illumio-world-tour

The Monday Microsegment for the week of July 28th. All the cybersecurity news you need to stay ahead, from Illumio's The Segment podcast.More than 400 organizations compromised in a fast-moving SharePoint attack campaign.Researchers are blaming China-based threat groups for the attacksAnd researchers ask: did well-meaning vulnerability disclosures tip them off?And John Kindervag joins us for a "Kindervag's Compass" segment. Head to The Zero Trust Hub: hub.illumio.comIntroducing Illumio Insights: AI Cloud Detection and Response Webinar: https://lp.illumio.com/Introducing-Illumio-Insights-Webinar.On-Demand

In this dynamic episode of The Segment, two of cybersecurity’s biggest names reunite with host, Raghu  Nandakumara, for a no-holds-barred conversation: John Kindervag, the godfather of Zero Trust, and Dr. Chase Cunningham, aka Dr. Zero Trust. What unfolds is a fast-paced, insight-packed dialogue that spans decades of hard-earned wisdom, unexpected humor, and a shared mission to demystify modern cyber defense.John and Chase reflect on the global evolution of Zero Trust—from its scrappy beginnings to its widespread adoption by Fortune 500s, military leaders, and even elder care facilities. They dive into why context-driven maps are now indispensable, how graph-based security is reshaping the cyber terrain, and where AI and automation can give defenders a real edge. Expect candid takes on the limits of SIEMs, the failure of red teaming without strategy, and why defenders need to start thinking like attackers if they want to win.There’s personal reflection too—Chase shares why he was reluctant to pick up the Zero Trust torch, and John opens up about the real heart behind the strategy. With wit, war stories, and straight talk, they make a clear case: cybersecurity isn't about perfection—it's about deterrence, resilience, and knowing what truly matters. Topics Covered:The origin and global adoption of Zero Trust Why “good maps” are critical for cyber resilience Real-world applications of AI in cyber defense Why attackers often outmaneuver defenders—and how to change that The psychology of leadership in cybersecurity strategy From Chick-fil-A to Bletchley Park: the unexpected places Zero Trust shows up Chase’s take on stock-picking based on breach trends (yes, really)  Resources Mentioned:Think Like an Attacker by Dr. Chase Cunningham John Kindervag’s Zero Trust 5-Step Model “Zero Trust Terrain & Holding the High Ground” LinkedIn Live   Stay Connected with our host, Raghu on LinkedInFor more information about Illumio, check out our website at illumio.com 

The Monday Microsegment for the week of July 21st. All the cybersecurity news you need to stay ahead, from Illumio's The Segment podcast.Is Salt Typhoon’s nine-month hack of a National Guard network the tip of the iceberg?CISA issues a rare 24-hour deadline to patch CitrixBleed 2 vulnerability.And a zero-day vulnerability in SharePoint is being used to breach dozens of organizations.And John Kindervag joins us for a "Kindervag's Compass" segment. Head to The Zero Trust Hub: hub.illumio.comIntroducing Illumio Insights: AI Cloud Detection and Response Webinar: https://lp.illumio.com/Introducing-Illumio-Insights-Webinar.On-Demand

The Monday Microsegment for the week of July 14th. All the cybersecurity news you need to stay ahead, from Illumio's The Segment podcast.UK police round up suspects they say are behind a wave of retail hacks.That new car could be systematic. Hydromatic. Ultramatic. And hacked via a Bluetooth flaw.And a new GPU-based attack turns AI models into artificial idiots.And John Kindervag joins us for a "Kindervag's Compass" segment. Head to The Zero Trust Hub: hub.illumio.comIntroducing Illumio Insights: AI Cloud Detection and Response Webinar: https://lp.illumio.com/Introducing-Illumio-Insights-Webinar.On-Demand