Keybase Teams—also featuring e2e-encrypted group chat—appears to be proof against the ghost-user-based attack. It would be interesting to compare its implement

Keybase Teams—also featuring e2e-encrypted group chat—appears to be proof against the ghost-user-based attack. It would be interesting to compare its implementation to how Signal does group messaging in TextSecure v2. [0] https://keybase.io/blog/introducing-keybase-teams#anyway-teams-have-signature-chains https://keybase.io/blog/introducing-keybase-teams#anyway-tea...