No Stupid Questions
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No, I mean companies that have only one objective - gather user data. Advertisers, marketing agencies, AI language models, corporates. If they federate with other instances, they essentially copy all posts and messages (including private messages!) over to their own server, and can then run it through data analytics software for whatever use case they have, try to match your user profile to other advertiser profiles they already have on you, etc.
And there's nothing you can do about it, that's simply how a decentralized network works. Every node in the system can see all the data and use it as they see fit.
It's also how the internet works, and you wouldn't need to set up an instance to scrape the data from lemmy.
True, what I mean is that federation removes the need for scraping since the data is delivered to you in its purest form.
Yeah API access is more efficient for the host than delivering the human-viewable content. Hence why Twitter and others always used to have their API open, so they could minimise the load from scraping.
I'm of the impression that only the origin and destination servers see any given private message, but I haven't verified this. Anyway, don't expect them to be really private. I'd worry more about reddit since pm exchanges there can be intensely private, there is a single evil corporation saving them all, and the user population is mostly oblivious to that.
When I've had something private to discuss with a reddit user, I've asked them to switch to email. They are sometimes willing but not always.
Signal messenger allows you to set up user handles since the latest beta, and they can be discarded and changed at any time, that's great for privacy.
It's a bit more than that, when a client connects to lemmy they connect to all instances with displayed media. This includes thumbnails. Even inside a post, you'll connect to every user's instance to get their profile thumbnail. This could be quite exploitable, as the federated instance is always the user's instance, not the instance of the community they post in - it would be possible for someone to fish for IP's by setting up their own instance and posting on a popular community.
/u/[email protected] is making a new UI that apparently handles all these calls a different way, without connecting everywhere. It's still a work in progress (you can't comment there yet) but it looks promising.
Thanks. Lemmy's privacy story is actually kind of bad. Like if you read a post, the instance retains that fact, to support features like "show unread posts". But that means not only is your posting history public, but your reading history can potentially be exposed.
That's the main reason I sometimes think of running my own instance. It would receive all the posts from every community without revealing which of them I bothered looking at.
Could someone set up a private multi-user instance? I'm imagining like an instance with just a few friends, where you share content from other instances but noone can see what is shared there except the people invited in.
Yes, that should be fairly easy and I sometimes think of doing it.
Didn’t think about DMs. Can’t they keep a private key for you in your home instance and then encrypt all DMs to external users with their public key which the home instance makes available for that user?
I guess they might, but right now, they don't.