I'm surprised I haven't seen more posts yet about this. A rogue or compromised admin put JavaScript redirects on Lemmy.world as well as changed the name and some other things. The other admins removed the compromised admin, but then about 30 minutes later they were reinstated and started wreaking havoc again. The instance eventually went offline completely.
I would be cautious about viewing any Lemmy.world communities right now, and the Beehaw admins should make sure their credentials are locked down in case they get targeted next.