To my knowledge, Signal is the only verifiably secure encrypted messaging app that's market ready. Signal is fully open source, including its encryption algorithm which has been tested numerous times and even gotten government agencies like the FBI all butthurt that can't break it or get a backdoor from the devs. I have a friend whose cryptography professor contributed to the project.

It was only in recent years that Signal upped their game enough with the user experience for me to start recommending it to friends and family. In 2013, when I first recall trying it out, Signal was more clunky and always wanted to be your default SMS app. I didn't like that, because at the time they didn't have a client to send messages from your computer.

Nowadays they have an desktop app that syncs with your phone, video calling, and even stories – which some people find weird but I'm all for non-Zuccubus owned private and secure alternatives to social media. I'm pretty sure anyone on Lemmy would love to pull more power away from these surveillance based ad companies and stop being data cows.

Tl;dr: Fuck the Zuck, keep promoting Signal, democratize the internet