Signal messenger is an end-to-end Encrypted instant messaging app for phones and desktop. Among such apps, it has one of the strongest security models available. The EFF has written about Signal and how little data they can collect and divulge.
My article Why You Should (Still) Use Signal As Much As Possible introduces why Signal should be used.
See its homepage and download page.
Links to this note
As I write this in March 2025, there is a lot of confusion about Signal messenger due to the recent news of people using Signal in government, and subsequent leaks.
Most of us carry cell phones with us almost everywhere we go. So much so that we often forget not just the usefulness, but even the joy, of having our own radios. For instance:
This started out at a post on my blog. This edited version is intended to be kept more up-to-date.
Encryption is a way to encode data so that people that might intercept it can’t decipher the original message (often called the “plaintext”).