@leo you're welcome! Another tactic is to keep an eye on the email addresses on new accounts (or the requests if you go that route). If you're getting a lot of new accounts registered to addresses all coming from the same (usually sketchy looking) root domain then just add it to the 'Blocked Email Domains' list for a couple of days.
@leo We get right-wing attacks sometimes on our activism and campaign instances. We remove the accounts when the cross the line and turn on moderation for sign up so people have to type a resion spammers and right-wing nutters have limited attention spans so this stops it for a while but the issues do come back.
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