I have a ton of concerns with Signal. They started collecting and storing user data in the cloud while being deceptive/unclear about it in their communications leading to a ton of confusion with users. In fact they're now storing exactly the same data that they've bragged about not being able to turn over since at that time they weren't keeping it. Pretty much as soon as it was clear Signal was going to start keeping user data, users started with objections and asking for a way to opt out of the data collection and bringing up security concerns but those objections were ignored.

To this day they're violating their own privacy policy because after they started storing user data in the cloud they never bothered to update the policy.

Currently it states: "Signal is designed to never collect or store any sensitive information." while in practice they store your name, your photo, your phone number, and a list of everyone you're in contact with which is pretty damn sensitive, especially if you're an activist or a whistleblower.

I've stopped using/recommending it. To this day I run into posts where people think Signal isn't collecting any user data. I hope every user who has to learn what signal is really collecting from some random internet comment thinks long and hard about what that says about how transparent and trustworthy signal is.