The 12th International Conference on Computer Vision Systems (ICVS 2019) took place in Thessaloniki, Greece, on 23-25 September 2019, continuing a series of successful events in in Europe, America and Asia. X. Zhang and K. Chandramouli (VENAKA) presented the DEFENDER paper “Critical Infrastructure Security Against Drone Attacks Using Visual Analytics“, which is also part of the Computer Vision Systems. ICVS 2019. Lecture Notes in Computer Science, vol 11754. Springer, Cham.