Harry McLaren

Hi, I'm Harry.

Cybersecurity Executive, Advisor & Community Leader.

Aligning cyber risk with enterprise strategy to drive business resilience and confident executive decision-making.

Approach

I translate complex technical environments into clear, board-level strategy. By applying a product management mindset, I ensure security acts as a strategic enabler rather than an operational bottleneck.

Mission

I build and guide security functions that protect revenue, safeguard trust, and accelerate innovation. Deep technical competence paired with operational empathy delivers tangible business value.

From leading unified defence at Tesco to advising leadership teams on evolving threat landscapes, I deliver pragmatic, real-world outcomes that prioritise human-centred resilience.

Executive Leadership

Explore my professional journey, from hands-on engineering to scaling global cyber defence capabilities.

Strategic Advisory

Helping boards and founders navigate technical complexity with risk-based governance and oversight.

Showcase & Community

Explore frameworks, methodologies, and community events designed to demystify complex security challenges.

Transmission Log

A deep dive into technical architectures, proactive defence, and engineering leadership.

Executive Briefings & Insights

3 Questions Your Board Should Ask the CISO About AI Risk

Move beyond hype and focus on pragmatic governance, data exposure, and model resilience.

Why Security Strategy is Slowing Down Engineering

And how to fix it by embedding operational empathy and product management principles.

Recent Writing

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The Zero-Luck Horizon: AI Acceleration and Mastering the Fundamentals

AI won't magically reshape technical attacks; it removes the friction from exploitation. In an era of instant software, luck-based security is mathematically dead.

Overcoming Defensive Aperture Collapse: Full Activation in the Collision Space

In a technological era that demands rapid adaptation, taking the path of pathological caution is the ultimate risk. Security leaders must fully activate and build aggressively.