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This paper presents the results of a laboratory study involving Mailvelope, a modern PGP client that integrates tightly with existing webmail providers. In our study, we brought in pairs of participants and had them attempt to use Mailve-lope to communicate with each other. Our results shown that more than a decade and a half after Why Johnny Can't(More)
Secure email is increasingly being touted as usable by novice users, with a push for adoption based on recent concerns about government surveillance. To determine whether secure email is ready for grassroots adoption, we employ a laboratory user study that recruits pairs of novice users to install and use several of the latest systems to exchange secure(More)
Usable, secure email remains an open problem. Recent research compared two separate secure email systems that support manual and automatic encryption, respectively. The system supporting manual encryption helped users better understand secure email and avoid mistakes. However, the use of two distinct systems casts doubt on whether the improvements can(More)
Private Webmail 2.0 (Pwm 2.0) improves upon the current state of the art by increasing the usability and practical security of secure email for ordinary users. More users are able to send and receive encrypted emails without mistakenly revealing sensitive information. In this paper we describe four user interface traits that positively affect the usability(More)
—This paper describes MessageGuard, a browser-based platform for research into usable content-based encryption. MessageGuard is designed to enable collaboration between security and usability researchers on long-standing research questions in this area. It significantly simplifies the effort required to work in this space and provides a place for research(More)
In this paper, we describe a user study we are conducting that compares PGP, IBE, and password-based secure email. This will be the first study that compares wholly different key management schemes while holding the overall system and interface design constant, thereby reducing confounding factors. Our goal is to establish the inherent usability differences(More)
This paper presents the results of a novel approach for conducting a laboratory user study of secure email. All prior laboratory studies involve a single novice user that communicates with an expert study coordinator to complete study tasks. In our study, we recruit a pair of novice users to come in together and attempt to exchange secure email messages.(More)
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