This paper proposes an Out-of-Device Privacy Scale (ODPS)-a reliable, validated
psychometric privacy scale that measures users' importance of out-of-device privacy. In …

Thermal attacks are an emerging threat that enables the reconstruction of user input after
interaction with a device by analysing heat traces. There are several ways to protect users …

Online security threats have arisen through Internet banking hacking cases, and highly
sensitive user information such as the ID, password, account number, and account …

Mobile phones are most likely the subject of targeted attacks, such as software exploits. The
resources needed to carry out such attacks are becoming increasingly available and, hence …

Randomizing the layout of the keypad has been proposed to improve the security of PIN
entry. However, there has been no empirical quantification of its impact on usability and …

Thermal cameras have become portable enough to integrate into wearables, such as
glasses, and can be used maliciously to infer passwords observing heat traces left on …

Security mechanisms based on patterns, such as Pattern Lock, are commonly used to
prevent unauthorized access. They introduce several benefits, such as ease of use, an …

Attacks on passwords by thermal cameras are a poignant example of how emerging
technologies can pose unforeseen security risks. Despite being easy to perform and …

In this thesis, I investigate to what extent self-issued voice commands can threaten Voice-
Controllable Devices (VCDs) in real-world scenarios. First, I formalise the threat model for …