@jeff My experience with Keybase makes me doubt how important security is to them: https://palant.de/2018/09/06/keybase-our-browser-extension-subverts-our-encryption-but-why-should-we-care
I wasn't aware of those issues, and it really is a shame. I like Signal though and wish they would be a little less closed off about their platform. Maybe federate the platform so that it is like TOR and there is not a chain of custody for messages.
A Mastodon instance for info/cyber security-minded people.