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Maxime Guerreiro












October 30, 2025
Beyond IP lists: a registry format for bots and agents

We propose an open registry format for Web Bot Auth to move beyond IP-based identity. This allows any origin to discover and verify cryptographic keys for bots, fostering a decentralized and more trustworthy ecosystem.




Thibault Meunier and Maxime Guerreiro















September 29, 2023
Cloudflare is free of CAPTCHAs; Turnstile is free for everyone

Now that we’ve eliminated CAPTCHAs at Cloudflare, we want to hasten the demise of CAPTCHAs across the internet. We’re thrilled to announce that Turnstile is generally available, and Turnstile’s ‘Managed’ mode is now completely free to everyone for unlimited use.




Benedikt Wolters,Maxime Guerreiro, and Adam Martinetti















June 23, 2023
Speeding up APIs with Ricochet for API Gateway

Today we’re announcing Ricochet for API Gateway, the easiest way for Cloudflare customers to achieve faster API responses through automatic, intelligent API response caching




John Cosgrove and Maxime Guerreiro















September 28, 2022
Announcing Turnstile, a user-friendly, privacy-preserving alternative to CAPTCHA

Any website can use a simple API to replace CAPTCHAs with our invisible alternative, whether they’re on the Cloudflare network or not.




Reid Tatoris,Benedikt Wolters,Maxime Guerreiro, and Miguel de Moura















June 8, 2022
Private Access Tokens: eliminating CAPTCHAs on iPhones and Macs with open standards

Today we’re announcing Private Access Tokens, a completely invisible, private way to validate that real users are visiting your site




Reid Tatoris and Maxime Guerreiro















June 13, 2019
Protecting Project Galileo websites from HTTP attacks

Yesterday, we celebrated the fifth anniversary of Project Galileo. More than 550 websites are part of this program, and they have something in common: each and every one of them has been subject to attacks in the last month.




Maxime Guerreiro

















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