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Re: Captchas on Cloudflare-Proxied Sites


From: Rich Kulawiec via NANOG <nanog () lists nanog org>
Date: Wed, 2 Jul 2025 08:20:38 -0400

On Wed, Jul 02, 2025 at 12:50:28PM +0200, niels=nanog--- via NANOG wrote:
Have you been following the news at all lately? Website operators are
complaining left and right about the load from scrapers related to AI
companies. They're seeing 10x, 100x the normal visitor load, with not just
User-Agents but also source IP addresses masked to present as regular
visitors. Captchas is unfortunately one of the more visible ways to address
this, even if not perfect.

"Not perfect" is an interesting way to describe this, given that the
very AI companies this claims to be effective against are the same AI
companies who can, at will, defeat every captcha.

This tactic is like trying to drown the ocean. 

---rsk
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