Jupiter Rowland@<a href="https://chaos.social/@joergi" rel="nofollow noopener" target="_blank">Jörgi</a> It does work Fediverse-wide, i.e. as a Hubzilla user, I can send posts and other content specifically to those in a certain privacy group (= Mastodon list on coke and 'roids from before there was even Mastodon), regardless of where they are. They could be on Hubzilla, on Friendica, on Mastodon, on Misskey, on Pixelfed, doesn't matter.<br><br>But there is one limitation.<br><br>Most Fediverse server software out there will understand anything coming from Hubzilla with limited permissions as a one-on-one DM. This means that in a thread with limited permissions, e.g. Mastodon users will only be able to discuss with the thread starter, but not with the others who were granted permission to receive the start post.<br><br>If I have a privacy group with Alice and Bob in it, and both are on Mastodon, and I send a post to only this privacy group, Alice and Bob will both receive the post as a DM. They will only be able to have a conversation with me. Alice won't know that Bob got the post, Bob won't know that Alice got the post, and Alice and Bob will not be able to converse with each other within this conversation thread.<br><br>It's only Hubzilla and its still existing descendants, <a href="https://codeberg.org/streams/streams" rel="nofollow noopener" target="_blank">(streams)</a> and <a href="https://codeberg.org/fortified/forte" rel="nofollow noopener" target="_blank">Forte</a>, that fully understand this special permission setting because they have a permission system that's very similar to Hubzilla's whereas Mastodon & Co. don't have any permission system to begin with.<br><br>So if Alice is on Hubzilla, and Bob is on (streams), and one of them replies to me, the other one can and will see that reply and will be able to interact with that reply. Like, Alice can reply to me, Bob can reply to Alice, and absolutely nobody else in the Fediverse will see my post or Alice's reply or Bob's reply.<br><br>By the way: (streams) and Forte literally have "privacy by default". While privacy groups are an optional, off-by-default feature on Hubzilla, access lists (practically the same) are part of the core on (streams) and Forte. And all your posts go to an access list named "Friends" by default unless you go and configure your channel to post in public by default. Conveniently, all your new connections are automatically added to the "Friends" access list by default.<br><br><blockquote>Is it part of the protocol? That's where it should be defined</blockquote><br>For the longest time, namely until last August, it wasn't available on ActivityPub-based software at all. For Hubzilla itself is not based on ActivityPub.<br><br>It was first implemented in an early "pre-cursor" version of Hubzilla from 2012 that was built on a protocol specifically designed by Hubzilla's creator for a) privacy by design and, especially, b) resilience against server shutdown. That was five years before ActivityPub was first shown and six years before it became a standard. The protocol was (originally) named Zot, and Hubzilla is still based on Zot6 with ActivityPub being supported via an optional add-on that's on by default for servers, but off by default for new channels. (By the way, Hubzilla was the first software to ever implement ActivityPub.)<br><br>There's also (streams) from October, 2021, a fork of a fork of three forks of a fork (of a fork?) of Hubzilla by Hubzilla's own creator which is based on what's actually a newer version of Zot, but which has advanced so much that it's incompatible with Hubzilla's Zot6, so it's named Nomad now. (streams) has Nomad as its base protocol, it also supports Zot6, and it optionally supports ActivityPub, only that ActivityPub is built into the core now and always on by default.<br><br>ActivityPub-based software with this permission system did not exist until August, 2024 when the self-same creator forked the streams repository into something new named Forte, ripped out any and all support for protocols that aren't ActivityPub and ported all of (streams)' features to ActivityPub.<br><br>#<a class="" href="https://hub.netzgemeinde.eu/search?tag=Long" rel="nofollow noopener" target="_blank">Long</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=LongPost" rel="nofollow noopener" target="_blank">LongPost</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=CWLong" rel="nofollow noopener" target="_blank">CWLong</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=CWLongPost" rel="nofollow noopener" target="_blank">CWLongPost</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=FediMeta" rel="nofollow noopener" target="_blank">FediMeta</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=FediverseMeta" rel="nofollow noopener" target="_blank">FediverseMeta</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=CWFediMeta" rel="nofollow noopener" target="_blank">CWFediMeta</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=CWFediverseMeta" rel="nofollow noopener" target="_blank">CWFediverseMeta</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=Fediverse" rel="nofollow noopener" target="_blank">Fediverse</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=Hubzilla" rel="nofollow noopener" target="_blank">Hubzilla</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=Streams" rel="nofollow noopener" target="_blank">Streams</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=%28streams%29" rel="nofollow noopener" target="_blank">(streams)</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=Forte" rel="nofollow noopener" target="_blank">Forte</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=Permission" rel="nofollow noopener" target="_blank">Permission</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=Permissions" rel="nofollow noopener" target="_blank">Permissions</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=PrivacyGroups" rel="nofollow noopener" target="_blank">PrivacyGroups</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=AccessLists" rel="nofollow noopener" target="_blank">AccessLists</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=Privacy" rel="nofollow noopener" target="_blank">Privacy</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=PrivacyByDesign" rel="nofollow noopener" target="_blank">PrivacyByDesign</a> #<a class="" href="https://hub.netzgemeinde.eu/search?tag=PrivacyByDefault" rel="nofollow noopener" target="_blank">PrivacyByDefault</a>