Police could lawfully use bulk surveillance techniques to access messages from encrypted communications platforms such as WhatsApp and Signal, following a ruling by the UK’s Investigatory Powers Tribunal (IPT), a court has heard.
They’ve said that they release the source code after it’s running in production:
sorry the source for one of our services was so far behind. We often don’t push source until we release things, and there were a few overlapping releases that happened in that period which made it awkward to push at any moment and put us behind. Additionally, we’ve seen a large increase in spam, and a reluctance to immediately publish the exact anti-spam measures we were responding with to a place where spammers could immediately see them combined with the above to cause this extreme delay.
They’ve said that they release the source code after it’s running in production:
https://github.com/signalapp/Signal-Android/issues/11101#issuecomment-815400676