PrivacyPass is an extension that lets you pre-solve CloudFlare CAPTCHAs if you're on a VPN. However, that was too frustrating, so CloudFlare partnered with Apple to integrate PrivacyPass into Safari.
How did they do this? Simple: iOS provides cryptographic attestation that your browser isn't a bot and isn't hacked, and CloudFlare takes that as your CAPTCHA solution. This works exactly the same way that Google proposes Web Environment Integrity work.
How did they do this? Simple: iOS provides cryptographic attestation that your browser isn't a bot and isn't hacked, and CloudFlare takes that as your CAPTCHA solution. This works exactly the same way that Google proposes Web Environment Integrity work.