Communication privacy is constantly under threat from Nation State Adversaries (NSA). This has led many platforms, such as Facebook and Apple, to implement secure conversation cryptographic protocols in their messaging applications. However, many of the protocols do not provide provable security and do not provide other security guarantees about…

As the digital world evolves, so does the risk of cyberattacks. Despite technology playing a vital role in nullifying these threats, the human factor is still regarded as one of the greatest weaknesses. End-user behavior is a major cause of information security breaches. This quantitative empirical study used a single-group, pre-post-test,…

The purpose of this quantitative study was to explore the influence of protection motivation theory (PMT) constructs on security behaviors of undergraduate students. More specifically, the primary focus of this study is to answer our primary research question: to what extent do the independent variables (perceived threat severity, perceived threat…

Mobile devices are rapidly becoming a very popular and convenient means of delivering and consuming learning content worldwide. The rise in popularity is due in part to the technological advancements that mobile devices have made in recent years, along with developments in the online learning platforms and spaces that support mobile learning.…

With the rapid increase of smartphones and tablets, security concerns have also been on the rise. Traditionally, Information Technology (IT) departments set up devices, apply security, and monitor them. Such approaches do not apply to today's mobile devices due to a phenomenon called Bring Your Own Device or BYOD. Employees find it desirable to…

Despite the recent advances in systems and network security, attacks on large enterprise networks consistently impose serious challenges to maintaining data privacy and software service integrity. We identify two main problems that contribute to increasing the security risk in a networked environment: (i) vulnerable servers, workstations, and…

Trust management in mobile networks is challenging due to dynamically changing network environments and the lack of a centralized trusted authority. In this dissertation research, we "design" and "validate" a class of dynamic trust management protocols for mobile networks, and demonstrate the utility of dynamic trust management…

Multi-touch tablets allow users to interact with computers through intuitive, natural gestures and direct manipulation of digital objects. One advantage of these devices is that they can offer a large, collaborative space where several users can work on a task at the same time. However the lack of privacy in these situations makes standard…

With increasing demand of mobile devices and cloud computing, it becomes increasingly important to develop efficient mobile application and its secured backend, such as web applications and virtualization environment. This dissertation reports a systematic study of mobile application development and the security issues of its related backend. …