A New Approach to Modelling Centralised Reputation Systems

Garms, Lydia; Quaglia, Elizabeth A.

doi:10.1007/978-3-030-23696-0_22

Cited by 5 publications

(1 citation statement)

References 22 publications

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“…Closely related is the study of reputation systems, whether centralised [14,36] or decentralised [9,82], originally motivated by the information leakage in services such as eBay or Uber which utilise public user ratings. It is not immediately clear how such a system could be translated to the setting of user trustworthiness in anonymous messaging, but the emergence of crowdsourced services such as the voluntary car scheme reveals potentially more straightforward applications.…”

Section: Security Notionsmentioning

confidence: 99%

Collective Information Security in Large-Scale Urban Protests: the Case of Hong Kong

Albrecht¹,

Blasco²,

Jensen³

et al. 2021

Preprint

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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 setting and highly digitalised nature. We conducted indepth, semi-structured interviews with 11 participants of these protests. Research findings reveal how protesters favoured Telegram and relied on its security for internal communication and organisation of on-the-ground collective action; were organised in small private groups and large public groups to enable collective action; adopted tactics and technologies that enable pseudonymity; and developed a variety of strategies to detect compromises and to achieve forms of forward secrecy and post-compromise security when group members were (presumed) arrested. We further show how group administrators had assumed the roles of leaders in these 'leaderless' protests and were critical to collective protest efforts.

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