Why does Signal need my phone number?
Signal is subject to National Security Letters in the U.S.
Signal received funding from Radio Free Asia owned by the U.S. Agency for Global Media with ties to the CIA.
They seem to have a history of needing quite some time to release the server source code.
Here are some articles to read about Signal:
When people in conversations tell me they’ve got nothing to hide, I routinely ask them for their bank details.