Browsing Computer Science by Author "Zhang-Kennedy, Leah"
Now showing items 1-7 of 7
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The aftermath of a crypto-ransomware attack at a large academic institution
Zhang-Kennedy, Leah; Assal, Hala; Rocheleau, Jessica; Mohamed, Reham; Baig, Khadija; Chiasson, Sonia (USENIX, 2018-08)In 2016, a large North American university was subject to a significant crypto-ransomware attack and did not pay the ransom. We conducted a survey with 150 respondents and interviews with 30 affected students, staff, and ... -
Cyberheroes: The Design and Evaluation of an Interactive Ebook to Educate Children about Online Privacy
Zhang-Kennedy, Leah; Abdelaziz, Yomna; Chiasson, Sonia (Elsevier, 2017-07)We designed an educational interactive ebook called Cyberheroes and evaluated it to assess its effectiveness at increasing children’s online privacy knowledge and behaviour, and supporting child-parent privacy-related ... -
Geo-Phisher: The Design and Evaluation of Information Visualizations about Internet Phishing Trends
Zhang-Kennedy, Leah; Fares, Elias; Chiasson, Sonia; Biddle, Robert (IEEE, 2016-06)We designed an information visualization about phishing trends and phishing prevention for the general public to examine the effects of interactivity on information finding, user perceptions and security behaviour intentions, ... -
Password Advice Shouldn't Be Boring: Visualizing Password Guessing Attacks
Zhang-Kennedy, Leah; Chiasson, Sonia; Biddle, Robert (IEEE, 2013-09)Users are susceptible to password guessing attacks when they create weak passwords. Despite an abundance of text-based password advice, it appears insufficient to help home users create strong memorable passwords. We propose ... -
Revisiting Password Rules: Facilitating Human Management of Passwords
Zhang-Kennedy, Leah; Chiasson, Sonia; van Oorschot, Paul (IEEE, 2016-06)Password rules were established in the context of past security concerns. Recent work in computer security challenges the conventional wisdom of expert password advice, such as change your passwords often, do not reuse ... -
The Role of Instructional Design in Persuasion: A Comics Approach for Improving Cybersecurity
Zhang-Kennedy, Leah; Chiasson, Sonia; Biddle, Robert (Taylor & Francis, 2016-03)Although computer security technologies are the first line of defence to secure users, their success is dependent on individuals’ behaviour. It is therefore necessary to persuade users to practice good computer security. ... -
Stop clicking on “update later”: Persuading users they need up-to-date antivirus protection
Zhang-Kennedy, Leah; Chiasson, Sonia; Biddle, Robert (Springer, 2014-05)Online security advice aims to persuade users to behave se- curely, but appears to have limited effects at changing behaviour. We pro- pose security advice targeted at end-users should employ visual rhetoric to form an ...