Usable, Secure, Private Search

Docignmg Secure and Usable Systems

People are the weakest link in the security chain” Bruce Schneier The aim of the thesis is to investigate the process of designing secure systems, and how designers can ensure that security mechanisms are usable and effective in practice. The research perspective is one of security as a socio-technical system. A review of the literature of security design and Human Computer Interactions in Secu...

Making Passwords Secure and Usable

To date, system research has focused on designing security mechanisms to protect systems access although their usability has rarely been investigated. This paper reports a study in which users’ perceptions of password mechanisms were investigated through questionnaires and interviews. Analysis of the questionnaires shows that many users report problems, linked to the number of passwords and fre...

Designing Secure and Usable Systems

uID: A Strongly-Secure Usable Identity Ecosystem

Designing tomorrow’s digital identity solution is faced with unique challenges. Identity mechanisms overwhelmingly refer to and are used by people. They need to be usable and affordable, and address individual concerns of privacy and confidentiality. At the same time, to ensure trust they need to provide accountability and be strongly secure. Further, it is important to realize that no one plat...

Account Recovery Challenges: Secure and Usable Authentication∗

Challenge questions represent the most popular practice today for supporting account recovery. In case a user forgets their memorized password, it is hoped that they’ll be able to recall the answers to their challenge questions. In theory, it seems like a good idea: the answer to the questions should be information that is already known to the user. Challenge questions are even being used to co...