Mark Warner is a Senior Lecturer in the Department of Computing and Information Sciences at Northumbria University. As a human-computer interaction researcher, Mark’s research interests are focused on two areas. The first is in the area of computer-mediated communication (CMC), and involves understanding issues of interpersonal privacy and safety online. In this line of research, Mark is particularly interested in understanding how CMC systems can be designed to encourage kinder interactions. The second is in the area of data-driven systems within public health and criminal justice with a particular focus on how systems that are designed to support decision-making impact different groups within society.