M. Angela Sasse is the Professor of Human-Centred Technology and Head of Information Security Research in the Department of Computer Science at University College London (UCL), UK. A usability researcher by training, she started investigating the causes and effects of usability issues with security mechanisms in 1996. In addition to studying specific mechanisms such as passwords, biometrics, and access control, her research group has developed human-centred frameworks that explain the role of security, privacy, identity and trust in human interactions with technology. A list of projects and publications can be found at http://sec.cs.ucl.ac.uk/people/m_angela_sasse/