Mesh messaging in large-scale protests: Breaking Bridgefy

MR Albrecht, J Blasco, RB Jensen… - Cryptographers' track at the …, 2021 - Springer
Mesh messaging applications allow users in relative proximity to communicate without the
Internet. The most viable offering in this space, Bridgefy, has recently seen increased uptake
in areas experiencing large-scale protests (Hong Kong, India, Iran, US, Zimbabwe, Belarus),
suggesting its use in these protests. It is also being promoted as a communication tool for
use in such situations by its developers and others. In this work, we report on a security
analysis of Bridgefy. Our results show that Bridgefy, as analysed, permitted its users to be …

[PDF][PDF] Mesh Messaging in Large-scale Protests: Breaking Bridgefy (Abridged version)

MR Albrecht, J Blasco, RB Jensen, L Marekova - martinralbrecht.wordpress.com
Mesh messaging applications allow users in relative proximity to communicate without the
Internet. The most viable offering in this space, Bridgefy, has recently seen increased uptake
in areas experiencing large-scale protests (Hong Kong, India, Iran, US, Zimbabwe, Belarus,
Thailand), suggesting its use in these protests. It is also being promoted as a communication
tool for use in such situations by its developers and others. In this work, we perform a
security analysis of Bridgefy. Our results show that Bridgefy permits its users to be tracked …
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