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Hey #MastoAdmin / #FediAdmin folks, there's a spam wave happening.

They are using QR codes with random color schemes so you can't use blurhash filters. And there is no text other than username direct mentions

Spam usernames are random strings, on poorly moderated servers as usual

Anyone have recommendations for mitigation?

If you don't have an admin team that can handle properly auditing account registrations and dealing with reports quickly, I strongly recommend disabling open registrations on your servers for now

#boost #spam