We provide an extensive cryptographic analysis of Threema, a Swiss-based encrypted
messaging application with more than 10 million users and 7000 corporate customers. We …

The Anti-Extradition Law Amendment Bill protests in Hong Kong present a rich context for
exploring information security practices among protesters due to their large-scale urban …

Political activism is a worldwide force in geopolitical change and has, historically, helped
lead to greater justice, equality, and stopping human rights abuses. A modern revolution …

Secure group messaging protocols, providing end-to-end encryption for group
communication, need to handle mobile devices frequently being offline, group members …

Self-sovereign identity (SSI) is a new paradigm to digital identity management that is built on
decentralized technologies and can exist without centralized third-parties for managing the …

The majority of secure messengers have single, centralized service providers that relay
ciphertexts between users to enable asynchronous communication. However, in some …

In recent decades, day-to-day lifestyle requires online payments as easy and simple
solutions to several financial transactions, which makes the concept of Electronic payment …

In developing countries, several key sectors, including education, finance, agriculture, and
healthcare, mainly deliver their services via mobile app technology on handheld devices. As …

In this paper we explore the digital security experiences of marginalised populations in
Lebanon such as LGBTQI+ identifying people, refugees and women. We situate our work in …

Bridgefy is a messaging application that uses Bluetooth-based mesh networking. Its
developers and others have advertised it for use in areas witnessing large-scale protests …