# Google Cloud Fraud Defense documentation

[Read product documentation](https://docs.cloud.google.com/recaptcha/docs/overview)
Google Cloud Fraud Defense is a unified platform for preventing fraud and abuse, including bot, account, and transaction protection across the agentic web. reCAPTCHA, an offering within Fraud Defense, provides core bot defense capabilities.

[Go to the Fraud Defense product page for more.](https://cloud.google.com/security/products/fraud-defense)

## Documentation resources

Find quickstarts and guides, review key references, and get help with common issues.

### Get started with Google Cloud Fraud Defense

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  [Overview](https://docs.cloud.google.com/recaptcha/docs/overview)

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  [Compare Fraud Defense tiers](https://docs.cloud.google.com/recaptcha/docs/compare-tiers)

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  [Test Fraud Defense in a demo website](https://docs.cloud.google.com/recaptcha/docs/quickstart-app)

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  [Implementation workflow](https://docs.cloud.google.com/recaptcha/docs/implementation-workflow)

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  [Set up Fraud Defense on websites](https://docs.cloud.google.com/recaptcha/docs/setup-overview-web)

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  [Set up Fraud Defense on mobile applications](https://docs.cloud.google.com/recaptcha/docs/setup-overview-mobile)

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  [Set up Fraud Defense with Cloud Armor](https://docs.cloud.google.com/recaptcha/docs/setup-overview-ca)

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  [Refine site-specific model](https://docs.cloud.google.com/recaptcha/docs/annotate-assessment)

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  [Migrate from reCAPTCHA Classic](https://docs.cloud.google.com/recaptcha/docs/migrate-recaptcha)

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  [Reconcile legacy terminology and CMS plugins](https://docs.cloud.google.com/recaptcha/docs/reconcile-legacy-terminology)

### Add additional security

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  [Configure multi-factor authentication](https://docs.cloud.google.com/recaptcha/docs/integrate-account-verification)

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  [Detect password leaks and breached credentials](https://docs.cloud.google.com/recaptcha/docs/check-passwords)

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  [Detect and prevent account-related fraudulent activities](https://docs.cloud.google.com/recaptcha/docs/account-defender)

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  [Detect and prevent account takeovers](https://docs.cloud.google.com/recaptcha/docs/account-takeovers)

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  [Prevent payment fraud](https://docs.cloud.google.com/recaptcha/docs/fraud-prevention)

### Reference and resources

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  [Authenticate to Fraud Defense](https://docs.cloud.google.com/recaptcha/docs/authentication)

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  [Client Libraries](https://docs.cloud.google.com/recaptcha/docs/libraries)

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  [REST API](https://docs.cloud.google.com/recaptcha/docs/reference/rest)

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  [RPC API](https://docs.cloud.google.com/recaptcha/docs/reference/rpc)

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  [Pricing](https://cloud.google.com/security/products/recaptcha#pricing)

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  [Billing information](https://docs.cloud.google.com/recaptcha/docs/billing-information)

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  [Quotas and limits](https://docs.cloud.google.com/recaptcha/quotas)

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  [Release notes](https://docs.cloud.google.com/recaptcha/docs/release-notes)

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  [Getting support](https://docs.cloud.google.com/recaptcha/docs/getting-support)

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  [FAQs](https://docs.cloud.google.com/recaptcha/docs/faq)

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