Leveraging Digital Twin-as-a-Service Towards Continuous and Automated Cybersecurity Certification. - Ioannis Koufos; Abdul Rehman Qureshi; Adrian Asensio; Allen Abishek; Efstathios Zaragkas; Ricard Vilalta; Maria Souvalioti; George Xilouris; Michael-Alexandros Kourtis (CoRR, 2025)