this post was submitted on 17 Jun 2023
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Lemmy
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Same question.
My theory is:
When the instance admins ban one of the users off of their instance, the ban event gets transmitted to everyone that’s federated, so that other instances can stop seeing posts from that user too.
That would imply that any instance admin, even those that created theirs for themself only, can just ban users on other instance. That would be a major attack vector and it kind of defeats the purpose of the autonomy each instance is supposed to have...