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.
@TiffyBelle
@Bloonface
And if other instance owners have access to the private messages of people on every instance, that is a shockingly large flaw. I’m not exactly sure how insecure private messaging would be here. Not that I have people to message. But it being centralized would be more secure if decentralization would allow a much larger number of people to have access to something that, really, should be private.
There are an overwhelming number of people I don’t think are savvy or cynical enough, call it what you will, to understand that just because they call something a private message - or just because it’s supposed to be a one to one interaction - doesn’t mean no one else can see it. I would think, if anything, an overwhelming majority of people who send a private message/DM on a social media assume that no one else at ALL has access to that information.
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