In the digital age, cybersecurity has become essential for safeguarding critical national infrastructure (CNI) from cyber threats. CNI refers to assets vital to a country’s economy, security, public health, and safety, such as energy, transportation, healthcare, financial systems, and telecommunications. With cyberattacks growing in sophistication, the need to protect these infrastructures is more urgent than ever. Cybersecurity plays a pivotal role in preventing malicious actors from disrupting essential services, compromising sensitive data, or even causing physical harm. Understanding Critical National Infrastructure (CNI) Critical National Infrastructure encompasses various sectors that form the backbone of a nation’s functioning. Any disruption or attack on these systems can lead to significant consequences, including economic loss, public safety risks, and national security breaches. For example, a cyberattack on the energy grid could lead to widespread blackouts, affecting mill