Securing a Generative AI-Powered Healthcare Chatbot. - Georgios Feretzakis; Athanasios Anastasiou; Stavros Pitoglou; Evgenia Paxinou; Aris Gkoulalas-Divanis; Konstantinos Kalodanis; Ioannis Tsapelas; Dimitris Kalles; Vassilios S. Verykios (EFMI-STC, 2024)