Report, block the user and/or the community. It’ll be growing pains until we figure out how to keep bad actors from ruining Lemmy. Until then it will happen here and there. DNS attacks and hacks have take down instances and been fixed and patched many times. If assholes CAN do something shitty, they will.
Someone mentioned there is a bug in the Hot algorithm that - if I remember correctly- judges hot based on the average upvotes for the community, so the first post of any new community is always hot.
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