We had a couple of reports today of vote manipulation happening in the Australia community. After investigating, I'm seeing a trend:
https://aussie.zone/post/21203876
https://aussie.zone/post/21124048
https://aussie.zone/post/21194319
https://aussie.zone/post/21130833
The votes in all these posts look like this. In this example, only two of the downvotes look legitimate. The rest are coming from three instances that don't appear to be real Lemmy sites. One of them doesn't even resolve.
Anybody can see it. The info is very lightly hidden behind, and available to anybody with an ounce of interest.