Analysis this month examines why cyberattacks on critical national infrastructure keep rising: greater connectivity, geopolitical tension, ageing systems and the sheer strategic value of disrupting essential services all play a part.
The takeaway
The trend matters to ordinary businesses because CNI runs on a vast web of suppliers. Attackers targeting infrastructure routinely go through smaller, less-defended organisations in the chain to get there.
If you supply energy, water, transport, health or government — directly or indirectly — strong security is becoming a condition of doing business. We help clients reach and evidence that standard through certification and managed security.
How the risk reaches ordinary businesses
Critical national infrastructure is defended in depth, so attackers rarely hit it head-on. Instead they look for the weakest link in its supply chain — the small engineering firm, software vendor or maintenance contractor with a trusted connection into a larger network. This is why organisations that would never consider themselves a “target” are increasingly caught up in campaigns aimed at energy, water, transport and health providers. Fourth-party risk (your suppliers’ suppliers) makes the web wider still, and it explains why buyers now ask for security evidence before they will sign a contract.
Where to focus
The practical response is the same whether you are protecting a power station or a payroll: achieve Cyber Essentials as a baseline, enforce multi-factor authentication, patch internet-facing systems quickly, and segment your network so a single compromise cannot spread. If you sell into regulated or infrastructure sectors, be ready to demonstrate those controls to your customers — increasingly it is the difference between winning work and losing it. We help clients reach that standard and produce the certification and reporting that procurement teams want to see.
The upside is that meeting this bar opens doors as well as closing them — a credible, evidenced security posture is fast becoming a competitive advantage when tendering for infrastructure-adjacent work.
Source: ITPro, 18 March 2026.