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Are users data protected on the fediverse?

$$6357
https://feddit.it/u/dontblink posted on Mar 2, 2026 20:24

In other words, can any user delete its data on its will and is there something that will remove its data from all the connected activitypub services? I believe this should actually be a basic feature and pretty much a requirement.

https://feddit.it/post/27261358
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$$6358
https://lemmy.blahaj.zone/u/birdwing posted on Mar 2, 2026 20:27
In reply to: https://feddit.it/post/27261358

Basically, the right to be forgotten? Afaik, on Reddit you have scripts to erase all message and rewrite/redact them with nonsense.

I assume something similar may exist for Lemmy, Piefed, etc.

https://lemmy.blahaj.zone/comment/19441117
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$$6359
https://lemmy.world/u/slazer2au posted on Mar 2, 2026 20:29
In reply to: https://feddit.it/post/27261358

Don’t think so. There is also nothing stopping an instance admin to patch Lemmy to ignore delete requests.

https://lemmy.world/comment/22438253
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$$6362
https://anarchist.nexus/u/Sanctus posted on Mar 2, 2026 20:35
In reply to: https://feddit.it/post/27261358

Anything you post here is public as well as your activity through the modlog.

https://anarchist.nexus/comment/2874988
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$$6363
https://feddit.it/u/dontblink posted on Mar 2, 2026 20:38
In reply to: https://lemmy.blahaj.zone/comment/19441117

I believed we were better than Reddit.. I truly believe this should be a BASIC feature. On Reddit you have to manually delete every single post, if you forget to do that basically your entire posts and comments history will be online forever..

https://feddit.it/comment/18601531
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$$6366
https://lemmy.dbzer0.com/u/fuckwit_mcbumcrumble posted on Mar 2, 2026 20:41
In reply to: https://feddit.it/post/27261358

No, not at all. Any data that is federated out assume it’s impossible to delete. Sure you can delete stuff from the original server, but will the federated ones obey the request? Or even get the request in the first place?

Nothing you post on social media should have any expectation of privacy.

https://lemmy.dbzer0.com/comment/24721109
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$$6368
https://discuss.tchncs.de/u/schnurrito posted on Mar 2, 2026 20:55
In reply to: https://feddit.it/post/27261358

It’s harder to delete things here than on non-federated services because everything you do here gets copied to lots of other servers, which are supposed to delete things when you do, but it’s impossible to guarantee that they always will (on purpose or by mistake).

I once deleted a comment here almost immediately after saving it, but then still got multiple upvotes for it. I found out that this was because one big instance hadn’t deleted it for whatever reason and its users had no idea that I’d meant to delete it.

https://discuss.tchncs.de/comment/24266672
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$$6371
https://piefed.ca/u/TheJesusaurus posted on Mar 2, 2026 21:03
In reply to: https://feddit.it/comment/18601531

Why? It’s all public information. If a central authority COULD delete all your posts and erase your existence, that would be bad

https://piefed.ca/comment/3723222
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$$6372
https://communick.news/u/rglullis posted on Mar 2, 2026 21:06
In reply to: https://feddit.it/comment/18601531

Asking to delete data that you published on the public internet is the same as asking for water to be not wet.

Don’t fall for the illusion of privacy that the proprietary networks give you: there are people that copy data from reddit just for the fun of it. Always assume that anything you publish online is publicly available.

https://communick.news/comment/8772958
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$$6376
https://piefed.social/u/HubertManne posted on Mar 2, 2026 21:09
In reply to: https://feddit.it/post/27261358

The only really important thing is the user account and it should never cave info about ip address or such that is connecting to it.

https://piefed.social/comment/10361949
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$$6378
https://piefed.social/u/rimu posted on Mar 2, 2026 21:11
In reply to: https://lemmy.dbzer0.com/comment/24721109

You are technically correct but the fact is that 99.9% of federated activities, including delete requests, are processed normally and in the expected way. That is not “impossible to delete” that is “will be deleted except in exceptional circumstances”.

https://piefed.social/comment/10361991
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$$6379
https://piefed.social/u/rimu posted on Mar 2, 2026 21:12
In reply to: https://feddit.it/comment/18601531

It is a basic feature and it does work. Except in rare cases.

https://piefed.social/comment/10362011
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https://slrpnk.net/u/LibertyLizard posted on Mar 2, 2026 21:23
In reply to: https://feddit.it/post/27261358

Unfortunately I think it must be assumed in this day and age that any content posted online publicly may be stored indefinitely, on any platform. Even if you delete it, there are bots scraping all your comments, and you won’t be able to delete from those databases. So I’m not sure how much utility this feature would have today.

https://slrpnk.net/comment/21026549
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$$6382
https://lemmy.ml/u/solrize posted on Mar 2, 2026 21:23
In reply to: https://feddit.it/post/27261358

Deleted comments seem to be saved forever so you can undelete them.

https://lemmy.ml/comment/24287164
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$$6386
https://jlai.lu/u/GlenRambo posted on Mar 2, 2026 21:29
In reply to: https://piefed.social/comment/10361991

What happens with servers that are defederared. Is that one of the 0.01%?

https://jlai.lu/comment/19768001
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$$6387
https://piefed.social/u/AmbitiousProcess posted on Mar 2, 2026 21:31
In reply to: https://feddit.it/post/27261358

Treat it similarly to how you should treat posting on any social media service.

If you make a post, that is federated to all kinds of other instances. They might process your delete request, or they might just ignore it and keep old posts stored for as long as they want. It’s the same with if you make a post on Reddit, someone sends that thread’s URL to the Internet Archive, and now there’s a permanent record of your account there.

If you post publicly, expect it will be recorded by someone publicly viewing it, and it will not be guaranteed to be removed.

https://piefed.social/comment/10362277
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$$6389
https://lemmy.wtf/u/meldrik posted on Mar 2, 2026 21:41
In reply to: https://feddit.it/post/27261358

Yes, all data on your account can be deleted, by deleting your account.

https://lemmy.wtf/comment/20225725
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$$6401
https://lemmy.zip/u/frongt posted on Mar 2, 2026 22:17
In reply to: https://lemmy.wtf/comment/20225725

Except what has been federated. There is no guarantee any server honors that request.

https://lemmy.zip/comment/24989774
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$$6402
https://piefed.social/u/rimu posted on Mar 2, 2026 22:20
In reply to: https://jlai.lu/comment/19768001

Good question!

PieFed sends delete requests to every known server, including defederated ones. I’ve seen a ton of delete requests from Mastodon too, for accounts that don’t exist on PieFed so it looks like Mastodon does that too. No idea about other fedi platforms.

https://piefed.social/comment/10362883
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$$6406
https://lemmy.wtf/u/meldrik posted on Mar 2, 2026 22:33
In reply to: https://lemmy.zip/comment/24989774

You mean publicly made comments? If if all servers honoured the delete request, there’s no guarantee that the comments are not saved somewhere else.

Data like IP, email etc. is deleted.

https://lemmy.wtf/comment/20226666
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$$6407
https://lemmy.world/u/homesweethomeMrL posted on Mar 2, 2026 22:35
In reply to: https://piefed.social/comment/10361991

So deleted everywhere except in the places you most wish it was deleted.

https://lemmy.world/comment/22440439
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$$6408
https://scrapetacular.ydns.eu/u/admin posted on Mar 2, 2026 22:35
In reply to: https://feddit.it/post/27261358

If your instance goes down, then you have no way of deleting your federated posts on your own. So the posts on my lemmynsfw alt will be up forever.

https://scrapetacular.ydns.eu/activities/d773f8b5-e5b0-47c5-a2a1-9f8215a23d59
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$$6409
https://lemmy.zip/u/nomy posted on Mar 2, 2026 22:36
In reply to: https://piefed.social/comment/10362883

I’d be willing to bet there’s archiving going via software/servers that don’t obey deletion requests.

Anything federated is public information.

https://lemmy.zip/comment/24990180
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$$6419
https://scrapetacular.ydns.eu/u/admin posted on Mar 2, 2026 23:07
In reply to: https://lemmy.zip/comment/24990180

There’s definitely a bot with a user agent like “fedi big data” doing some scraping in my server logs, does anyone know who that is?

https://scrapetacular.ydns.eu/activities/d0714727-3514-42cf-8b84-5af28e1cc09d
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$$6456
https://lemmy.world/u/Zak posted on Mar 3, 2026 00:35
In reply to: https://feddit.it/post/27261358

Well-behaved server software honors delete requests, but there are a bunch of ways for that to fail without anyone doing anything malicious:

  • If your instance shuts down, there is no way for you to generate delete requests
  • If a server admin has to restore a backup from before your request, the deleted data will be restored
  • Immature or experimental software may not work as designed; Lemmy itself has a version number starting with 0
  • Archiving services may keep snapshots of pages from fediverse servers; here’s your user page on lemmy.world on archive.org
  • Fediverse servers often make content available by RSS, and RSS clients may store that content; there’s no way for them to receive a signal that it should be deleted

And then there’s malicious activity. It wouldn’t be hard to run a server that speaks ActivityPub, subscribes to a bunch of stuff, pretends to honor delete requests, and actually keeps everything.

Deletion will always be unreliable on the fediverse as long as it runs on technology that looks anything like current implementations.

https://lemmy.world/comment/22442203
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$$6464
https://lemmy.dbzer0.com/u/fuckwit_mcbumcrumble posted on Mar 3, 2026 01:01
In reply to: https://lemmy.zip/comment/24990180

With how Lemmy handles deleted posts (and nuking access to the comments) I’m probably gonna make my own removeddit for Lemmy.

https://lemmy.dbzer0.com/comment/24725300
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$$6546
https://communick.news/u/rglullis posted on Mar 3, 2026 06:33
In reply to: https://piefed.social/comment/10362011

“it works when everyone behaves well” is not the same as being protected.

It doesn’t even take a malicious actor: I am working on a local-first browser extension that is very aggressive about caching content in the database. There is no “please delete this data” for an extension. You of all people should not be making claims about privacy that you know you can not guarantee.

https://communick.news/comment/8776875
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$$6559
https://scrapetacular.ydns.eu/u/admin posted on Mar 3, 2026 07:39
In reply to: https://feddit.it/post/27261358

Is it actually possible to request deletion of something on someone else’s computer over the internet, and guarantee that its gone?

https://scrapetacular.ydns.eu/activities/13c54634-8fc5-47ad-b70f-5f61b3327c54
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$$6568
https://lemmy.world/u/CosmoNova posted on Mar 3, 2026 09:18
In reply to: https://piefed.social/comment/10361991

Even if things get deleted we‘re still on the internet and everything is posted public and exposed to being scrapped the second you submit something. Your anonymity is your best friend here, I think.

https://lemmy.world/comment/22447931
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$$6694
https://lemmy.ca/u/cecilkorik posted on Mar 3, 2026 15:41
In reply to: https://feddit.it/post/27261358

Anything you post on the internet is public knowledge forever. End of discussion. Most people won’t care at all, in most cases almost nobody or perhaps even literally nobody will ever even see it, but the harder you try to hide it, the more the Streisand Effect will magnify it until eventually everyone knows about it.

Anyone telling you they’ll delete your data from the internet without clarifying that it is in fact impossible, is at worst deliberately lying to you usually for their own benefit, and at best making a promise they literally have zero ability to keep.

I would hope that Fediverse services will never lie to you and tell you your data is deleted, because it can’t be.

https://lemmy.ca/comment/22004525
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$$6830
https://midwest.social/u/iceberg314 posted on Mar 3, 2026 22:29
In reply to: https://feddit.it/post/27261358

I think not? Which is kind of a drawback to the fediverse. You gotta be careful what you post cause it’s probably gonna be somewhere forever.

I could be wrong though

https://midwest.social/comment/23001602
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