Introducing Ephemeral IDs: a new tool for fraud detection

Cloudflare has introduced Ephemeral IDs as a new feature for its CAPTCHA alternative, Turnstile. This feature generates unique short-lived IDs without relying on network-level information, allowing the identification of malicious actions even when attackers rotate through large pools of IP addresses. By analyzing browser attributes and signals, Ephemeral IDs can detect abuse patterns more accurately beyond just determining whether a visitor is a human or a bot. This enhances security for websites protected by Turnstile without impacting user privacy.

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