We do get customers suffering from spam attacks at various times, not just isolated to this week or next. It could be 1-2 communities this week, and then 2-3 communities next week, and sometimes none in a week. FWIW, we have new spammers every day on meta.
That said, I highly recommend using the discourse-ai plugin’s spam detection as Nate quoted above. You can use a cheap LLM like Gemini Flash and I can attest it works very well.