The Defender's Journal

Hosted by Techfellow Ltd

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Latest episode

Jun 2026

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EN-GB

About the show

Welcome to The Defender's Journal (our next step up from The Tech Stack), where we delve into the lives and minds of leading professionals in the cybersecurity space. Discover their unique stories, motivations, perspectives on the industry, and tips for long-term success... *Interested in joining us on the show? Please connect with Cameron Wenham or Jeff Harrod!

Listen to episodes

60 recent

June 10, 202624 min

A Defender's x Disruptor's Journal Crossover - Lee Rossey

Welcome to another special crossover episode of The Defender’s and Disruptor’s Journal!This week, Lee Rossey joins us - CTO and Co-Founder of SimSpace, a company helping organisations prove whether their teams, tools and AI agents can perform under real-world pressure.In this episode, we explore why cyber readiness can no longer rely on assumptions, vendor claims or controlled lab results. Lee breaks down the value of high-fidelity cyber ranges, AI proving grounds and digital twin-style environments - and why the future of security may depend on testing machine-speed responses before they ever reach production…+ Want to be part of the journey? Connect with host Cameron Wenham or explore both shows via our website!

May 28, 202632 min

A Defender's x Disruptor's Journal Crossover - Matt Moynahan

Welcome to another special crossover episode of The Defender’s and Disruptor’s Journal!This week, Matt Moynahan joins us - CEO of GetReal and a leader focused on one of the most urgent questions in security: what happens when identity itself can be fabricated in real time?In this episode, we explore why traditional security stacks were never designed for a world of synthetic media, deepfake detection and forensic verification. Matt breaks down where enterprise failures are already emerging - from candidate fraud and account takeover to executive impersonation - and why the next decade of security may depend on restoring trust to digital communication itself.+ Want to be part of the journey? Connect with host Cameron Wenham or explore both shows via our website!

May 20, 202637 min

A Defender's x Disruptor's Journal Crossover - Rick Caccia

Welcome to another special crossover episode of The Defender’s and Disruptors’ Journal.This week, Rick Caccia joins us - CEO of WitnessAI and former CMO at companies including Palo Alto Networks and Google Cloud. Having spent three decades shaping how major technology markets are understood, Rick is now building in one of the fastest-moving spaces of all: safe enterprise AI adoption.In this episode, we explore why most organisations are still struggling to understand how AI is really being used, why “blocking everything” creates a false sense of control, and how WitnessAI shifted from a fear-led security message to solving the far less glamorous - but far more urgent - problem of AI compliance, visibility and governance.+ Want to be part of the journey? Connect with host Cameron Wenham or explore both shows via our website!

May 8, 2026Episode 3541 min

The Defender's Journal Episode 35 - Omkhar Arasaratnam

Welcome to Episode 35 of The Defender’s Journal!This week, Omkhar Arasaratnam joins us - a Distinguished Engineer at LinkedIn whose career has taken him from factory work and DJ’ing to leading cyber and engineering functions across IBM, Deutsche Bank, Credit Suisse, JPMorgan and Google.In this episode, we explore why careers are rarely ladders, the difference between advisors and operators, and what changes when you build security into systems serving millions of users. Omkhar also reflects on analysis paralysis, mentorship, and the mindset that turns every day into a “bonus round”.You can find more from Omkhar at omkhar.net and learn about his scholarship work at skscholarship.com.+ Interested in joining us on the show? Connect with Cameron Wenham on LinkedIn or via our website.

April 22, 202632 min

A Defender's x Disruptor's Journal Crossover - Damon Kachur

Welcome to another special crossover episode of The Defender’s and Disruptors’ Journal.Today’s guest is Damon Kachur, CEO of SecureG - a leader who has spent over two decades building the invisible infrastructure that digital trust depends on, from issuing billions of device identities to securing the networks behind telecom, IoT and critical systems.In this episode, we explore what it really means to build trust at scale - from the early days of PKI and stopping large-scale fraud, to the future of quantum-resistant cryptography and machine identity. Damon also shares his mindset as a leader under pressure, why trust infrastructure is still misunderstood at board level, and how the next wave of AI and connected systems will redefine identity entirely...+ Want to be part of the journey? Connect with host Cameron Wenham or explore both shows via our website!

April 8, 2026Episode 3431 min

The Defender's Journal Episode 34 - George Totev

Welcome to Episode 34 of The Defender’s Journal!This week, George Totev joins us - a CISO who has spent over 20 years operating at the intersection of regulation, product and real-world risk, building and scaling security and compliance functions across organisations like Goldman Sachs, Visa and Atlassian...In this episode, we explore how security leaders should think about trade-offs at scale - from balancing prevention vs reaction, to understanding diminishing returns in security investment, and why incident management is ultimately the last line of defence. George also touches on how to communicate risk effectively to boards - not through theory, but through cost, consequence and real-world impact.+ Interested in joining us on the show? Connect with Cameron Wenham on LinkedIn or via our website.

April 1, 202632 min

A Defender's x Disruptor's Journal Crossover - Abhi Sharma

Welcome to another crossover episode of The Defender’s Journal.Today’s guest is Abhi Sharma, co-founder and CEO of Relyance AI - a company rethinking how organisations secure data in the age of AI. Rather than treating data as something static, his team is building an AI-native approach to privacy, governance and security that focuses on the movement of data itself.In this episode, we explore how Abhi’s early experiences shaped his leadership philosophy, why “unreasonable hospitality” has become a defining cultural pillar at Relyance AI, and what many organisations still misunderstand about building trust in AI-driven systems…+ Want to be part of the journey? Connect with host Cameron Wenham or explore both shows via our website!

March 18, 2026Episode 3337 min

The Defender's Journal Episode 33 - Sandeep Poonen

Welcome to Episode 33 of The Defender’s Journal.This week, Sandeep Poonen joins us. From establishing VMware’s cloud security and enterprise cyber risk functions from the ground up to leading global compliance, fraud risk platforms and board-level cyber strategy, his career spans scale, regulation and high-stakes accountability...In this episode, we explore what was forged early in his journey - moving countries at 17 and building under pressure - and how that shaped his philosophy on integrity, resilience and leadership. We unpack what it really means to “bowl the last over,” why preparation matters more than bravado, and how trust is built not through perfection, but through accountability.+ Interested in joining us on the show? Connect with Cameron Wenham on LinkedIn or via our website.

March 4, 2026Episode 3229 min

The Defender's Journal Episode 32 - Jacob DePriest (2)

Welcome to Episode 32 of The Defender’s Journal.Jacob DePriest returns to the show - previously Deputy CISO at GitHub, and now holding a rare dual mandate as CISO and CIO at 1Password, operating at the fault line between security, infrastructure, and business strategy.In this conversation, Jacob unpacks what truly changes when you move from a deputy role into full ownership, why “customer zero” shifts the identity of a security leader, and the advice he gives to anyone early in their career: don’t default to the way things have always been done - push, test, and challenge the assumptions that everyone else has learnt to live with.+ Interested in joining us on the show? Connect with either Jeff Harrod or Cameron Wenham on LinkedIn or via our website.

February 18, 202631 min

A Defender's x Disruptor's Journal Crossover - Harry Wetherald

Welcome to a special crossover episode between ‘The Defender’s Journal’ and our new sister series focussed on ‘The Disruptors’ where we shift the lens from what needs defending to what we’re building next...Our guest is Harry Wetherald - a founder with one foot in venture capital, the other in technical scale. As co-founder and CEO of Maze, he’s raised over $30 million and is reimagining vulnerability management through an AI-native lens - building systems that anticipate, recommend, and act, rather than wait for direction.We dig into the mindset behind Maze’s mission, and explore what marketing in cyber gets wrong, what AI-native actually means in practice, and why clarity is a more powerful moat than complexity!+ Want to be part of the journey? Connect with host Cameron Wenham or explore both shows via our website!