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PSA: Lemmy votes can be manipulated
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this post was submitted on 09 Jul 2023
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The nice things about the Federated universe is that, yes, you can bulk create user accounts on your own instance - and that server can then be defederated by other servers when it becomes obvious that it's going to create problems.
It's not a perfect fix and as this post demonstrated, is only really effective after a problem has been identified. At least in terms of vote manipulation from across servers, it could act if it, say, detects that 99% of new upvotes are coming from a server created yesterday with 1 post, it could at least flag it for a human to review.
It actually seems like an interesting problem to solve. Instance runners have the sql database with all the voting record, finding manipulative instances seems a bit like a machine learning problem to me
There's an XKCD for that: https://xkcd.com/810/
One other thing is that you can bulk create your own instances, and that's a lot more effort to defederate. People could be creating those instances right now and just start using them after a year; at least they have incurred some costs during that..
I believe abuse management in openly federated systems (e.g. Lemmy, Mastodon, Matrix) is still an unsolved problem. I doubt good solutions will arrive before they become popular enough to attract commercial spammers.
Then they will just distribute their bots equally to other legit servers, and by that, defederation is not a viable solution anymore.
One other problem are real human troll farms
If they can do that, they could've done it on a traditional site anyway
"Legit" instances are able to moderate/control the spam coming from their users.