Providing Security Assurance & Hardening for Open Source Software/Hardware: The SecOPERA approach. - Apostolos P. Fournaris; Christos Tselios; Evangelos Haleplidis; Elias Athanasopoulos; Antreas Dionysiou; Dimitrios Mitropoulos; Panos Louridas; Georgios Christou; Manos Athanatos; George Hatzivasilis; Konstantinos Georgopoulos; Costas Kalogeros; et al. (CAMAD, 2023)