Information privacy is a major concern of internet users; however, online vendors need information provided by consumers to sell products and services. This work proposes three essays to explore online privacy behavior of internet users. The first essay examines the role of personal dispositions in impacting information sensitivity, privacy concern, and trust in the context of providing health ...

Protection of personal data is essential for customer acceptance. Even though existing privacy policies can describe how data shall be handled, privacy enforcement remains a challenge. Especially for existing applications, it is unclear how one can effectively ensure correct data handling without completely redesigning the applications. In this paper we introduce Privacy Injector, which allows ...

The aggregation of personal attributes into user profiles is a significant privacy concern. Existing attribute management systems support the controlled release of attributes and unlinkability between session protocols, but do not address the problem that attributes distributed in this way may be data-mined for features that allow user profiles to be reconstructed. This paper identifies the agg...

Human brain activity collected in the form of Electroencephalography (EEG), even with low number of sensors, is an extremely rich signal. Traces collected from multiple channels and with high sampling rates capture many important aspects of participants’ brain activity and can be used as a unique personal identifier, similarly to fingerprints, DNA, or a portrait. The motivation for sharing EEG ...

Privacy issues are major concerns in disclosing sensitive personal information such as health-related information. This study investigates the impact of personal dispositions on forming privacy concern and trust in context of disclosing personal health information online, based on utility theory and prospect theory. The study is among the first to provide a comprehensive list of constructs rela...

It is commonplace for organisations to collect personal information to be processed and stored on their systems. Until recently, there was no comprehensive legislation that addressed the ‘processing’ of personal information by organisations in South Africa. The Protection of Personal Information Bill (“POPI”) was signed into law in November 2013 and is expected to come into effect, later this y...

Personal data are the new oil. Vast amounts of spatiotemporal data generated by individuals have been collected and analyzed, such as check-in data, trajectories, web browsing data and timestamped medical records. These personal data are a valuable resource for businesses and also have the potential to provide significant social benefits through sharing and reuse. However, privacy concerns hind...

Sharing personal information benefits both users and third parties in many ways. Recent advances in sensor networks and personal archives enable users to record all of their digital objects including emails, social networking activities, or life events (life logging). These information objects are usually privacy sensitive and thus need to be protected adequately when being shared. In this work...