Learning from "shadow security": understanding non-compliant behaviours to improve information security management

This thesis examines employee interaction with information security in large organisations. It starts by revisiting past research in user-centred security and security management, identifying three research questions that examine (1) employee understanding of the need for security, (2) the challenges security introduces to their work, together with their responses to those challenges, and (3) how to use the emerging knowledge to improve existing organisational security implementations. Preliminary examination of an available interview data set, led to the emergence of three additional research questions, aiming to identify (4) employee actions after bypassing organisational security policy, (5) their response to perceived lack of security support from the organisation, and (6) the impact of trust relationships in the organisation on their security behaviours. The research questions were investigated in two case studies inside two large organisations. Different data collection (200 interviews and 2129 surveys) and analysis techniques (thematic analysis and grounded theory) were combined to improve outcome validity and allow for generalisability of the findings. The primary contribution of this thesis is the identification of a new paradigm for understanding employee responses to high-friction security, the shadow security: employees adapt existing mechanisms or processes, or deploy other self-devised solutions, when they consider the productivity impact of centrally-procured security as unacceptable. An additional contribution is the identification of two trust relationships in organisational environments that influence employee security behaviours: organisationemployee trust (willingness of the organisation to remain exposed to the actions of its employees, expecting them to behave securely), and inter-employee trust (willingness of employees to act in a way that renders themselves or the organisation vulnerable to the actions of another member of the organisation). The above contributions led to the creation of a structured process to better align security with organisational productive activity, together with a set of relevant metrics to assess the effectiveness of attempted improvements. The thesis concludes by presenting a case study attempting to apply the above process in an organisation, also presenting the emerging lessons for both academia and industry

Usable Security. A Systematic Literature Review

Usable security involves designing security measures that accommodate users’ needs and behaviors. Balancing usability and security poses challenges: the more secure the systems, the less usable they will be. On the contrary, more usable systems will be less secure. Numerous studies have addressed this balance. These studies, spanning psychology and computer science/engineering, contribute diverse perspectives, necessitating a systematic review to understand strategies and findings in this area. This systematic literature review examined articles on usable security from 2005 to 2022. A total of 55 research studies were selected after evaluation. The studies have been broadly categorized into four main clusters, each addressing different aspects: (1) usability of authentication methods, (2) helping security developers improve usability, (3) design strategies for influencing user security behavior, and (4) formal models for usable security evaluation. Based on this review, we report that the field’s current state reveals a certain immaturity, with studies tending toward system comparisons rather than establishing robust design guidelines based on a thorough analysis of user behavior. A common theoretical and methodological background is one of the main areas for improvement in this area of research. Moreover, the absence of requirements for Usable security in almost all development contexts greatly discourages implementing good practices since the earlier stages of development

Privacy, security, and trust issues in smart environments

Recent advances in networking, handheld computing and sensor technologies have driven forward research towards the realisation of Mark Weiser's dream of calm and ubiquitous computing (variously called pervasive computing, ambient computing, active spaces, the disappearing computer or context-aware computing). In turn, this has led to the emergence of smart environments as one significant facet of research in this domain. A smart environment, or space, is a region of the real world that is extensively equipped with sensors, actuators and computing components [1]. In effect the smart space becomes a part of a larger information system: with all actions within the space potentially affecting the underlying computer applications, which may themselves affect the space through the actuators. Such smart environments have tremendous potential within many application areas to improve the utility of a space. Consider the potential offered by a smart environment that prolongs the time an elderly or infirm person can live an independent life or the potential offered by a smart environment that supports vicarious learning