Security for systems that
cannot afford to go down

In critical infrastructure, the impact on availability determines the severity of a finding. IT/OT convergence, interconnected environments and supply chains allow an attack to spread across systems and disrupt essential processes.

The security challenges in critical infrastructure

Critical infrastructure connects digital systems to physical processes that organisations and society depend on. IT, OT, cloud environments and suppliers are becoming increasingly interconnected.

Your resilience therefore also depends on systems and parties outside your direct control.

At the same time, the Dutch Cybersecurity Act requires greater control over cyber risks, incidents and dependencies across the supply chain. Security needs to be demonstrably managed, making cybersecurity an increasingly important board-level responsibility.

Do you recognize these challenges?

Managing cyber risks in an environment where systems are tightly interconnected and operations cannot simply come to a halt brings significant challenges. At the same time, you rely on third-party vendors and must provide the board with clear visibility into the risks and measures taken.

You cannot secure what you cannot see

Years of expansion and new integrations can make it difficult to know exactly what is running and how systems are connected. Without that visibility, risks remain hidden.

Security without disrupting operations

Critical systems require a different approach: patching, replacing or extensively testing them immediately is not always possible. Security measures cannot put operational availability or safety at risk.

You do not control the entire chain

Suppliers and partners are part of your security landscape. A vulnerability or compromised account at another party can expose your environment too.

Cybersecurity has reached the boardroom

The Dutch Cybersecurity Act makes board members jointly responsible for managing cyber risks. The challenge is creating enough visibility into risks and measures for the board to make informed decisions and provide effective oversight.

What The S-Unit does for critical infrastructure

Critical environments leave little room for disruption, but you still need to know which attack paths really matter. Our approach is built around that balance: realistic enough to expose vulnerabilities and risks across the chain, controlled enough to protect critical processes.

Security Health Check

Gives you insight into the risks and dependencies that could affect the availability of your critical processes.

Scenario-based Pentesting

Shows whether a realistic attack path within your environment can actually reach a critical system or process.

Red Teaming

Shows how effectively your organisation can withstand a realistic attacker targeting your most critical assets through people, processes and technology.

Cyber Crisis Simulation

Prepares your teams for the decisions and collaboration required when a cyberattack threatens business continuity.

Getest in de echte wereld

We werken voor organisaties waar security niet mag falen.

targenio

targenio koppelt AI-agents aan bedrijfskritische systemen en wilde weten of het groeiende platform bestand was tegen realistische aanvallen.

Het assessment testte het platform aan de hand van realistische aanvalsscenario’s en leverde het developmentteam duidelijke, toepasbare inzichten op. De resultaten gaven targenio een beter beeld van waar securityrisico’s binnen de SDLC ontstaan en hoe het eerder aanpakken daarvan kostbare aanpassingen in een later stadium kan voorkomen.

Bingy

Bingy werkt met gevoelige welzijnsdata en had onafhankelijk bewijs nodig dat het platform veilig was om aan klanteisen te voldoen en verdere groei te ondersteunen.

Binnen twee weken werd de pentest uitgevoerd en het rapport opgeleverd, waarbij werd bevestigd dat er geen grote kwetsbaarheden waren gevonden. De resultaten gaven Binqy onafhankelijke validatie van de security en hielpen om pentesten een terugkerend onderdeel van de securitystrategie te maken. Daarmee ondersteunt het zowel het vertrouwen van klanten als de weg naar ISO 27001-certificering.

Primary point of contact

“Testing a realistic attack in critical infrastructure means working within clear safety boundaries. You need to go far enough to expose real attack paths, without putting the availability of critical processes at risk.”

Nick Bruinsma

Red Team Lead

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“The S-Unit combines in-depth expertise with a pragmatic approach. They think along critically, communicate clearly and translate their findings into concrete improvements we can act on straight away. It’s a pleasant way of working that helps us strengthen our information security further. And just as important: thanks to them, I sleep a lot better”

Firas Daoud

TAF – CTO

“The S-Unit understood from the start what we wanted to achieve, even though the path to get there wasn’t entirely clear yet. They took us along in their approach, thought ahead and switched gears quickly when needed. We could trust that it would work out, without having to keep steering. It’s a really pleasant way of working together.”

Martijn Korevaar

Gemeente Rotterdam – IT Risk & Compliance Manager

“We didn’t want to be told that we’re vulnerable. We wanted to see how far a real attacker would get. Instead of a standard report, we got insight into exactly the risks that matter most to us.”

Anonymous

Manager Tech Security

“We received professional help with a pentest of a broad application landscape. Despite the many different functionalities in our landscape, the test was fast and thorough.”

Daan van der Ham

Lead techniek - PO-VO Raad

Test your security without
putting critical operations at risk

Expose real attack paths across IT, OT and connected environments, within the safety boundaries critical infrastructure demands.

Security for systems that cannot afford to go down