This is the only mention I've found, although I suspect there may be more but I haven't been able to find mentions: https://teddit.net/r/technology/comments/kt

This is the only mention I've found, although I suspect there may be more but I haven't been able to find mentions: https://teddit.net/r/technology/comments/kt91qk/signal_private_messenger_team_here_we_support_an/gikqpde/#c https://teddit.net/r/technology/comments/kt91qk/signal_priva... I wish they'd be more open about this, since it's one of the biggest hurdles with Signal.