> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.coinflow.cash/_mcp/server.

# Payment Security & Risk Management

## Docs

- [👷 Chargeback Protection Overview](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/fraud-protection/about-chargeback-protection.md): Learn about how to protection your merchant account from chargebacks.
- [How Chargeback Protection Works](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/fraud-protection/how-chargeback-protection-works.md): Learn how comprehensive and accurate data sharing is essential for fine-tuning fraud detection models
- [How To: Implement Chargeback Protection](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/fraud-protection/implement-chargeback-protection.md): Developers can use this documentation to implement chargeback protection for all card checkouts.
- [How To: Migrate to the Coinflow Fraud SDK](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/fraud-protection/migrate-to-the-coinflow-fraud-sdk.md): Move a mobile app's chargeback protection setup to the Coinflow Fraud SDK, which sends every protection signal in a single header.
- [Improving Chargeback Protection Acceptance Rates](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/fraud-protection/improving-chargeback-protection-acceptance-rates.md): 
- [Overriding Chargeback Protection](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/fraud-protection/overriding-chargeback-protection.md): Learn about the different chargeback protection statuses, error codes, and how to override the decision.
- [How To: Send Payer Events for Chargeback Protection](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/fraud-protection/sending-payer-events.md): 
- [Chargeback Reason Codes](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/fraud-protection/chargeback-reason-codes.md): The possible codes that a user can dispute a purchase with
- [Fraud Alerts and Chargeback Notifications](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/fraud-protection/fraud-alerts-and-chargeback-notifications.md): How Coinflow receives fraud alerts, blocks compromised users, and escalates disputes into chargebacks.
- [Responding to Disputes](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/fraud-protection/responding-to-disputes.md): A step-by-step guide for merchants on how to respond to chargebacks opened against their transactions.
- [AVS (Address Verification System)](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/fraud-protection/avs.md): Learn how AVS checks help protect against card fraud and when address collection is required.
- [🛡️3DS](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/fraud-protection/3-ds/about-3-ds.md): Learn about how Coinflow leverages 3DS to protect against fraud.
- [🛡️How to Interpret 3DS-Verified Transactions](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/fraud-protection/3-ds/how-to-interpret-3-ds-verified-transactions.md): 
- [Wallet-Signed Authentication (Advanced)](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/checkout-security/strong-authentication.md): Require customers who connect with a Solana or EVM wallet to sign a message before viewing saved cards and bank accounts.
- [Tokenize Checkout Parameters](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/checkout-security/tokenize-checkout-parameters.md): This guide explains how to securely tokenize your checkout parameters with a JWT to prevent tampering and protect your users during payment.
- [Domain Whitelisting for Coinflow Checkout](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/checkout-security/whitelist-ur-ls.md): This guide explains how to whitelist your domain to ensure Checkout only loads on trusted sites, protecting against phishing and iframe injection attacks.
- [PCI Compliance Requirements for Direct Card Tokenization](https://docs.coinflow.cash/guides/checkout/payment-security-risk-management/pci-compliance.md): Requirements merchants must meet to directly tokenize raw card data (PAN & CVV) with Coinflow.