ActivityPub, the protocol that powers the fediverse (including Mastodon – same caveats as the first two times, will be used interchangeably, deal with it) is not private. It is not even semi-private. It is a completely public medium and absolutely nothing posted on it, including direct messages, can be seen as even remotely secure. Worse, anything you post on Mastodon is, once sent, for all intents and purposes completely irrevocable. To function, the network relies upon the good faith participation of thousands of independently owned and operated servers, but a bad actor simply has to behave not in good faith and there is absolutely no mechanism to stop them or to get around this. Worse, whatever legal protections are in place around personal data are either non-applicable or would be stunningly hard to enforce.
@Deceptichum
@Bloonface @TiffyBelle
What do they call “private messages” on Twitter? What do you think DMs means on social media? Drivate Messages?
“Direct Message” and “Private Message” indeed mean different things. In practice, because both involve messaging one individual user, a good deal of people (including myself) still expect them to be functionally the same. Part of this functionality we expect is that there is an attempt to make these messages less visible and easy to access than the reply I just sent to you right now. This expectation is validated on Twitter:
on Instagram:
by Cambridge Dictionary:
and by the fact that if you go on anyone’s profile, you can see post history, comment history, and boosts, but not a list of who they tried to send an individual message to or what those messages were. I believe that more technical people could retrieve such messages, that the messages are not totally secure, but to my layman eyes, I do still expect that there was at least an attempt to make these messages private.