Ivan is Professor of Computer Science, and a Governing Body Fellow of Kellogg College. Most of his research interests are in the area of cyber-physical system security and wireless networks. Some of his concrete research topics include authentication and intrusion detection using physical-layer information, robust wireless communication, and the analysis of trade-offs between system security and performance. He works with various technologies, such as software-defined radios, wireless sensors, and NFC/RFIDs. He is also intrested in behavioural biometrics and their applications, such as continuous authentication using physiological signals captured by, e.g., eye-tracking and EEG devices.