Cybersecurity rarely stays inside the security team.
An acquisition can bring together different security environments. A cyberattack can disrupt essential services. Technology dependencies can become strategic concerns. Geopolitical developments can change how organizations think about their digital infrastructure.
For today’s CISO, security is increasingly part of decisions that reach well beyond the traditional security perimeter.
Four episodes of The CISO Perspective look at what that means in practice.
Security starts before the deal
An acquisition brings together more than two businesses. It can also bring together different technology environments, identities, attack surfaces and security cultures.
In When Giants Merge: Securing M&A Integrations, Max Killinger and Berthold Kerl explore the security challenges of major acquisitions, including due diligence, identity, attack-surface visibility and the challenge of bringing different security cultures together.
The key point: security work starts before integration day.
When the business is critical infrastructure
The stakes are different when the organization you protect helps keep the lights on.
In When the Lights Go Out: Cybersecurity at Europe's Energy Grid, René Rindermann of E.ON discusses cybersecurity in the energy sector — including IT and OT security, ransomware, Zero Trust, AI and crisis preparedness.
Here, resilience is not just about protecting data. It is also about keeping essential services running when something goes wrong.
That changes the question from “Can we prevent an attack?” to “Can we keep operating if one happens?”
Technology dependencies become a security question
Cybersecurity also increasingly involves decisions about the technology an organization depends on.
The European CISO Dilemma: Sovereignty, Dependencies, and Tool Sprawllooks at the practical challenges behind European cyber sovereignty — from understanding dependencies to managing complexity and making decisions about platforms and providers.
There is no single answer. But understanding where those dependencies sit is an increasingly important part of security decision-making.
And geopolitics is part of the picture
In The Evolving Battlefield: AI, Zero Trust, and the Case for European Cyber Sovereignty geopolitics and sovereignty come together.
For security leaders, the challenge is to understand how changes outside the organization can affect its technology choices, dependencies and resilience.
The CISO conversation is getting bigger
Across these four episodes, security connects directly to M&A, operations, critical infrastructure, technology strategy and geopolitics.
That is what makes these conversations interesting: they show security leaders dealing with questions that increasingly sit at the intersection of cybersecurity and the wider business.
This is one side of the CISO story.
The other looks at how AI, identity, emerging threats and quantum computing are changing the security landscape.
Explore The CISO Perspective and continue with AI, Identity and the CISO’s Changing Agenda.
