Nottingham Trent University is offering four funded PhD studentships as part of the Hybrid Cyber Range (HCR) project, led by Associate Professor Ali Safaa Sadiq. These opportunities focus on next-generation cyber security experimentation, training, and critical infrastructure protection. The research areas include measurement, assurance, and trustworthiness of hybrid cyber ranges, design and evaluation of secure and scalable cyber-physical training environments, secure digital twins and cyber-physical system emulation, and AI-driven adaptive scenario generation and attack orchestration. Successful candidates will contribute original research at the intersection of cyber security, artificial intelligence, cyber-physical systems, and applied experimentation. The projects have strong industry links and address national infrastructure challenges. Applicants should have a solid background in computer science, cyber security, information technology, or related fields, with an interest or experience in cyber-physical systems, AI, or critical infrastructure protection. The studentships are funded, though specific details about the funding package are not provided in the announcement. Interested applicants should review the four project links and apply through the relevant application pages, preparing all necessary materials as outlined in each project description. For further information, candidates may contact Associate Professor Ali Safaa Sadiq or visit his LinkedIn profile. Keywords: cyber security, hybrid cyber range, AI, cyber-physical systems, critical infrastructure, applied experimentation, digital twins, scenario generation.