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I still don't understand how Nostr would behave in this hypothetical scenario - a bad actor creates 100k key pairs (via residential proxies) and posts 10 LLM-generated replies to each new post. Who would fight with that wave of spam exactly and how?

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This is happening today.

The answer is trusted relays and Web of Trust

Long-time nostr user. My feeds are all spam free. Not to say there aren't any other problems :-)

I guess it's easier with commercial spam when they have to advertise something, and that could be detected (website, product, etc)

But when it's just a new account with a few LLM-generated replies - how would trusted relay automatically detect the malicious intent?

You only read from the relays you want, relays have all the tools in the world to reject spam, therefore the solution is just to have clients that help the user enforce selecting only what they deem as "safe" relays in order to read replies from.

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