Cybersecurity is not just about protecting data, it’s about protecting society. Hospitals, power grids, satellites, public administrations… our world relies on critical infrastructures more than ever. But as they become increasingly connected, they also become more vulnerable.
In this article for Cyber Awareness Month, André Garrido, SOC Manager at Nexova, explores why safeguarding these essential systems is one of the greatest challenges of our time and how true resilience comes from people, strategy and culture, not just technology.
The backbone of our society
Critical infrastructures are the backbone of our modern world: from the hospitals that treat us to the financial systems that drive our economies, the satellites that connect us and the energy grids that keep our lights on.
As these vital systems become ever more interconnected, they also grow more exposed. Every new connection and every layer of digital dependency creates a new point of vulnerability. This expanding network of interdependencies has made critical infrastructures both stronger and more vulnerable than ever before.
The real-world impact of cyber threats
We’ve witnessed the real-world consequences of such threats. Last month, a cyberattack on Collins Aerospace disrupted operations at several European airports, demonstrating how vulnerabilities in one company can ripple across entire sectors. Similarly, the ransomware attack on Ireland’s healthcare system in 2021 paralysed hospitals and cost millions to recover. These incidents are stark reminders that cyberattacks on critical infrastructures are not just digital disruptions: they are direct assaults on society itself.
When essential services stop, it’s not just data that’s lost – it’s trust, safety and stability.
No one-size-fits-all defence
Different infrastructures face different dangers. For public administrations, state-sponsored attacks are a growing threat. For energy companies, industrial control systems, often built long before cybersecurity was a consideration, are prime targets. And since the global WannaCry incident in 2017, ransomware has remained one of the most pervasive risks across all sectors.
Generic, ‘one size fits all’ defences simply don’t work. Each system requires a tailored approach, built on a deep understanding of who the potential attackers are, what their motives may be and how they might strike. Only by mapping this threat landscape can we protect against both generic and sector-specific threats.
Building a future that lasts
An effective and sustainable cybersecurity strategy cannot rely on technology alone. It must combine:
- Clear governance and alignment with business goals
- Continuous risk awareness and system visibility
- Skilled people capable of rapid detection and response
- A culture of security and continuous improvement that evolves with every lesson learned.
Cybersecurity for critical infrastructures is not a destination: it’s an ongoing journey.
A journey that demands vigilance, adaptability and, above all, a shared commitment to protecting the systems that keep our societies running.
At Nexova, we are proud to be part of that mission: safeguarding what truly matters.