Constructivism is a learning theory that emphasizes learner-centered knowledge acquisition and assimilation. In this paper, I report my experience of implementing a constructivist learning environment in a Master’s course in information security. Following constructivist tenets, the implementation was composed of (a) a personal knowledge construction component culminating in a security presentation and (b) a social construction component in which students constructed knowledge with their peers. In addition to narratives of these components, potential drawbacks are discussed.