Since their client apps are OSS you can check yourself: https://github.com/Whisp... | Hacker News

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		5ersi on Oct 4, 2016 \| parent \| context \| favorite \| on: Grand jury subpoena for Signal user data Since their client apps are OSS you can check yourself: https://github.com/WhisperSystems/Signal-Android

mi100hael on Oct 4, 2016 | [–]

Notably, the source for the voice call server is not available as far as I know, and there's no guarantee that the text messaging server is running in an unaltered state on their production servers.

CaptSpify on Oct 4, 2016 | [–]

But isn't this server-side meta-data, not client-side meta-data? The service still routes through their system.

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