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I'll be presenting a review of some metadata protections implemented by instant messengers at Pass the Salt 2025!

The studied messengers are @signalapp @olvid_io @matrix and @simplex

cfp.pass-the-salt.org/pts2025/…

I'll be in touch with the vendors to share with them what I'm gonna say about them, to give them the chance to respond to my observations.

#pts25 @passthesaltcon

Metadata Protection in Instant Messaging Applications: a Review PTS2025

This talk covers the obvious issue of long-term identities and the construction of the social graph and how some protections supposed to thwart the social graph recovery are flawed.
cfp.pass-the-salt.org
#pts25 @The Matrix.org Foundation @SimpleX Chat @Signal @Pass the SALT Conference @Olvid
in reply to The Matrix.org Foundation

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F. Maury ⏚

No worries :) No new vulnerabilities will be presented: most things were previously discussed or are publicly documented. The idea of this talk is to compare the different approaches and trade-off of the reviewed protocols to give the audience a feeling about how well their metadata is protected, and to give developers ideas about improvements the other messengers already implemented.
But I do want to reach out to ensure what I am gonna say is correct and does not misrepresent the security levels of each network.
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