What's that? Encryption's OK now? UK politicos Brexit from Whatsapp to Signal
Found on The Register on Saturday, 21 December 2019
Like WhatsApp, Signal has end-to-end encryption baked in, preventing a foreign power or individual from accessing sensitive conversations. In addition, it also includes settings, which, when enabled, self-destructs messages after a period of time.
Unfortunately, Signal doesn't allow group moderators to block individuals from taking screenshots, which would frustrate the process of leaking a conversation to the press.
Also, Signal source-code is available on Github, so with the proper knowledge you can compile your own client to ignore self-destruct requests. That aside, it seems rather strange for a software that emphasizes security and privacy to require your phone number for registering an account when it could simply generate its own random internal user-id.