It's done clientside, and you can't remove it (on iOS) because only official Signal-published builds will receive push notifications of new messages from Signal servers (via APNS).
This doesn't apply to a sender of an exploit, but does apply to normal people who wish to send full res images or patch out the DRM in the Signal app.
It's done clientside, and you can't remove it (on iOS) because only official Signal-published builds will receive push notifications of new messages from Signal servers (via APNS).
This doesn't apply to a sender of an exploit, but does apply to normal people who wish to send full res images or patch out the DRM in the Signal app.