The pervasive influence of social media platforms has transformed the landscape of contemporary discourse. While these platforms facilitate open discussions on diverse topics, they also pose significant challenges related to misinformation and the manipulation of public opinion. With the advent of generative AI and Large Language Models, the dissemination of misinformation has become increasingly sophisticated, threatening the integrity of online discourse and eroding trust in institutions and communities. The goal of the first and second editions of the Summer School on Artificial Intelligence for a Secure Society was to empower individuals with the knowledge and tools to foster more secure communities, both online and offline. By bringing together experts from diverse fields, the program addressed pressing challenges through the lens of artificial intelligence.