Building Resilience in Critical National Infrastructure

The National Cyber Security Centre (NCSC) has released a report detailing insights from industry penetration testers on enhancing the resilience of the UK's critical national infrastructure (CNI). Published on 1st July 2026, the report provides practical recommendations for organisations to make it more challenging for attackers to compromise CNI. Key suggestions include improving network segmentation, refining incident response strategies, and conducting regular security assessments.

Why this matters for UK organisations

For UK businesses, particularly those in sectors such as energy, transport, and healthcare, the operational impact of a cyber incident on CNI can be severe. Disruptions can affect service delivery, public safety, and economic stability. By implementing the NCSC's recommendations, organisations can enhance their security posture and reduce vulnerabilities, thereby safeguarding critical services.

What to review

Organisations should prioritise conducting thorough security assessments to identify potential vulnerabilities. Reviewing and updating incident response plans to ensure they are robust and effective is crucial. Additionally, enhancing network segmentation can limit the spread of an attack, providing an additional layer of defence.

Source: NCSC UK