Episode 16: Contact Discovery in Mobile Messengers!
Do we really need to rely on sharing every phone number on our
phone in order for mobile messengers to be usable? What are the
privacy risks, and do better cryptographic alternatives exist for
managing that data? Joining us are researchers looking exactly
47 Minuten
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In-depth, substantive discussions on the latest news and research in applied cryptography.
Beschreibung
vor 4 Jahren
Contact discovery is a core feature in popular mobile messaging
apps such as WhatsApp, Signal and Telegram that lets users grant
access to their address book in order to discover which of their
contacts are on that messaging service. While contact discovery is
critical for WhatsApp, Signal and Telegram to function properly,
privacy concerns arise with the current methods and implementations
of this feature, potentially resulting in the exposure of a range
of sensitive information about users and their social circle. Do we
really need to rely on sharing every phone number on our phone in
order for mobile messengers to be usable? What are the privacy
risks, and do better cryptographic alternatives exist for managing
that data? Joining us are researchers looking exactly into this
problem, who will tell us more about their interesting results.
Links and papers discussed in the show: All the Numbers are US:
Large-scale Abuse of Contact Discovery in Mobile Messengers
(https://www.ndss-symposium.org/wp-content/uploads/ndss2021_1C-3_23159_paper.pdf)
Music composed by Toby Fox and performed by Sean Schafianski
(https://seanschafianski.bandcamp.com/). Special Guests: Alexandra
Dmitrienko, Christian Weinert, and Christoph Hagen.
apps such as WhatsApp, Signal and Telegram that lets users grant
access to their address book in order to discover which of their
contacts are on that messaging service. While contact discovery is
critical for WhatsApp, Signal and Telegram to function properly,
privacy concerns arise with the current methods and implementations
of this feature, potentially resulting in the exposure of a range
of sensitive information about users and their social circle. Do we
really need to rely on sharing every phone number on our phone in
order for mobile messengers to be usable? What are the privacy
risks, and do better cryptographic alternatives exist for managing
that data? Joining us are researchers looking exactly into this
problem, who will tell us more about their interesting results.
Links and papers discussed in the show: All the Numbers are US:
Large-scale Abuse of Contact Discovery in Mobile Messengers
(https://www.ndss-symposium.org/wp-content/uploads/ndss2021_1C-3_23159_paper.pdf)
Music composed by Toby Fox and performed by Sean Schafianski
(https://seanschafianski.bandcamp.com/). Special Guests: Alexandra
Dmitrienko, Christian Weinert, and Christoph Hagen.
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