Konstantinos is a trained mathematician, information security professional, and CISSP, who moved to academia to conduct experimental research on behavioural aspects of security. His work utilises behavioural economics and psychology to examine security behaviours in various contexts, including perceptions of risk, types of 'rationality', decision-making, and human aspects of cybercrime. He supervises a group of PhD students.

Konstantinos is the Director of the Distance Learning (DL) MSc programme in Information Security and has been teaching the courses: Human Aspects of Information Security and Privacy and Cybercrime for several years.

He is a Program Committee Member for the Workshop on Active Defense and Deception (AD&D) with the IEEE European Symposium on Security and Privacy, the European Network Intelligence Conference, the Workshop on Applications of Social Network Analysis, the International School and Conference on Network Science and the International Conference on Signal Image Technology & Internet Based Systems.

To advance interdisciplinary research, Konstantinos co-founded the research group HIVE (Hub for research into Intergenerational Exploitation to Vulnerability) amongst the Information Security Group, Law, and Psychology at Royal Holloway. Indicative HIVE projects include the protection of adolescents from cyberbullying / cyberstalking, and the elderly from financial fraud. HIVE has established collaborations with London Met Police, NCSC, and a number of financial and charity organisations.

In 2021 and 2023, he provided input at the UK All-Party Parliamentary Group (APPG) on Cybersecurity on the Online Harms Bill (now Online Safety Act), and Maritime Security.

He is Director at the International Cyber Security Centre of Excellence (https://incs-coe.org), an international research community founded between 6 universities: Imperial (UK), Royal Holloway (UK), Northeastern (US), UMBC (US), Kyushu (Japan), and Keio (Japan). The centre fosters research collaborations and rapidly expands globally.
Konstantinos is a Visiting Professor at Keio University, Tokyo, Japan 特別 招聘 准教授   慶応 大学 東京 日本.