Abstract:
Small Modular Reactors (SMRs), suitable for off-grid applications, offer more affordable and clean energy. One of the key obstacles to their implementation is accelerating technological development while maintaining compliance with safety and security standards throughout their lifecycle. This paper aims to address computer security challenges in the deployment of SMRs. SMRs rely heavily on digitalization, making them susceptible to cybersecurity threats that jeopardise their safety and functionality. Adequate measures must be put in place to mitigate the risk of insider threats, including employee training and strict access controls to limit access to critical systems and information. Regularly updating and patching software and systems can prevent Ad vanced Persistent Threats(APTs) from gaining long-term access. Encryption, multi-factor authentication, fire walls, and intrusion the detection systems protect communication channels from cyber threats. Establishing a well-defined emergency response plan, a data recovery plan and regular backup procedures ensures data integrity and provides a means to recover quickly from a cyber incident. Adopting a proactive and multidi mensional cybersecurity approach reduces the risk of cyber threats and enhances the overall resilience of the nuclear infrastructure. Addressing these challenges requires a multi-faceted strategy involving collaboration between stakeholders, cybersecurity experts, and governments.