# Radar

Use Stripe Radar to protect your business against fraud.

## Get started

Use Radar to evaluate transactions, accounts, and customers in real time, using AI algorithms to assess the risk of fraud.
[Set up your Radar integration](https://docs.stripe.com/radar/optimize-risk-factors.md#integration-risk-factor-completeness)
## Understand Radar

[How Radar works](https://docs.stripe.com/radar/how-radar-works.md): Protect your business against fraud, and screen transactions from supported payment methods automatically.

[Compare Radar plans](https://docs.stripe.com/radar/how-radar-works.md#compare-plans): Choose the Radar plan that’s best for your business based on the available features.

[Risk controls and settings](https://docs.stripe.com/radar/risk-settings.md): Automatically adjust which payments you block based on dynamic detection.

## Transaction risk prevention

[View risk evaluation results](https://docs.stripe.com/radar/transaction-risk-prevention.md): Use a risk score to evaluate the risk level for your payments in real time.

[Handle manual reviews](https://docs.stripe.com/radar/transaction-reviews.md): Review suspicious payments that need a human decision.

[Transaction fraud alerts](https://docs.stripe.com/radar/analytics/transaction-fraud-alerts.md): Receive notifications when Stripe detects unusual fraud patterns.

## Customer abuse prevention

[Multi-account and account sharing abuse evaluation](https://docs.stripe.com/radar/multi-account-and-account-sharing-abuse.md): Detect multi-accounting and account sharing abuse at signup and login.

[Free trial abuse prevention](https://docs.stripe.com/radar/free-trial-abuse.md): Detect customers likely to abuse free trials by collecting a payment method at the start of a trial.

[Pay-as-you-go abuse evaluation](https://docs.stripe.com/radar/pay-as-you-go-abuse.md): Identify subscription customers unlikely to pay their next invoice before a billing cycle ends.

[Bot abuse prevention](https://docs.stripe.com/radar/bot-abuse.md): Evaluate whether a payment was likely made by a bot.

## Account fraud prevention

[Reduce buyer and connected account fraud](https://docs.stripe.com/radar/account-fraud-prevention.md): Prevent, detect, and mitigate buyer fraud and financially risky connected accounts.

[Fraudulent merchant signal](https://docs.stripe.com/radar/fraudulent-merchant.md): Detect and respond to signals for connected accounts engaging in fraudulent activity.

[Merchant delinquency risk](https://docs.stripe.com/radar/merchant-delinquency-risk.md): Identify connected accounts at risk of financial distress that might lead to negative balances.

[Fraudulent website signal](https://docs.stripe.com/radar/fraudulent-website.md): Evaluate a business’s website for suspicious or misleading content.

## Rules engine and analytics

[Create lists](https://docs.stripe.com/radar/lists.md): Maintain lists of trusted customers to automatically allow or block charges accordingly.

[Customize rules](https://docs.stripe.com/radar/rules.md): Modify criteria that instructs Radar to allow, block, review, or request 3DS authentication.

[Analyze Radar metrics](https://docs.stripe.com/radar/analytics.md): Understand fraud patterns and their impact on your business.