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    About Stytch Fraud and Risk

    Introduction
    Use cases
    Device Fingerprinting
      Overview
      Fingerprints

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        • Verdicts overview
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        Challenge
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    Getting started
      Device Fingerprinting API
      DFP Protected Auth
    Decisioning
      Decisioning overview
      Setting rules with DFP
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    Enforcement
      Enforcement overview

    • Protected Auth

        • Overview
        Handling challenges

    • Strong CAPTCHA

        • Overview
        Getting started
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About Stytch Fraud and Risk

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Enforcement

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Strong CAPTCHA

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Overview

Strong CAPTCHA

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Strong CAPTCHA offers a modern take on traditional CAPTCHA that thwarts bots and CAPTCHA farms by using proprietary device intelligence to proxy and encrypt the CAPTCHA. This method is used to detect and identify bots upfront, and also ensures that the CAPTCHA can't be solved by an outsourced third party - since the device signals wouldn't match the ones used for encryption.

In other words, Strong CAPTCHA uses device- and user-specific signals to ensure CAPTCHAs are solved where they're shown - not by a bot, or by an outsourced service.

Strong CAPTCHA diagram

You are in control of determining when a user is prompted with Strong CAPTCHA. We recommend using Strong CAPTCHA when a user is attempting to login from a suspicious device (check out Device Fingerprinting) or about to take an action that carries a high risk of fraud (e.g. collecting a sign up bonus).