*They do it because all the successful social apps need to make contact discover... | Hacker News

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goatinaboat on Feb 28, 2021 | parent | context | favorite | on: Fake_contacts: Android app to create fake phone co...

They do it because all the successful social apps need to make contact discovery easy.

Signal does it with hashes which it doesn’t store anyway

https://support.signal.org/hc/en-us/articles/360007061452-Do...

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