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The AI company Perplexity is complaining their bots can't bypass Cloudflare's firewall
(www.searchenginejournal.com)
This is a most excellent place for technology news and articles.
Used to make tarpits with reverse proxies. Accept the connection and then set the responses for a few seconds before default TCP timeout. Doesn't eat much resource as long as you have enough TCP connections and can reuse them effectively.