DOCSEARCHbyAlgolia
Submit Docs

Payments & Risk Documentation

website·Indexed 31 days ago

https://paymentsandrisk.com

A comprehensive knowledge base for payments, fraud, and chargeback professionals. It provides detailed guides on payment processor comparisons (including Adyen, Braintree, Checkout.com, Clover, and Helcim), authorization optimization, settlement and reconciliation, and regional payment methods across APAC, Europe, and Latin America. The documentation includes frameworks for business model viability, unit economics calculators, and deep dives into card payment mechanics, digital wallets, and real-time payments like RTP and FedNow.

Tokens
361.7K
Snippets
667
Records
2.4K
Agent score
60%

What's inside Payments & Risk

  1. Overview of Mastercard Scam Merchant Monitoring (SMMP)

    The Scam Merchant Monitoring Program (SMMP), also referred to by Mastercard as 'Merchant Trust Services', is a screening and investigation duty imposed on acquirers and payment facilitators. It is designed to identify fake shops, subscription traps, and investment fronts. Unlike standard monitoring programs, it is not a public ratio program with a portal or appeal process; instead, it triggers a mandatory investigation by the acquirer within 72 hours of a signal. The primary penalty for failing this screening is the cessation of Mastercard and Maestro acceptance.

  2. Overview of Verifi CDRN Manual Alert Service

    Verifi CDRN (Cardholder Dispute Resolution Network) is a manual alert service that notifies merchants when a customer contacts their bank to dispute a charge. Unlike automated systems, CDRN places alerts in a queue for the merchant to review and decide on a case-by-case basis. If the merchant issues a refund within approximately 72 hours of the alert, the dispute is resolved before it becomes a formal chargeback, protecting the merchant's chargeback ratio. It is primarily US-focused and strongest for Visa and Discover volume.

  3. Overview of Payments and Risk Documentation

    The documentation is organized into seven primary sections covering the lifecycle of payment processing and risk management:

    • Accepting payments: Money movement, processor selection, fees, and approval rates.
    • Chargebacks and disputes: Reason codes, deadlines, dispute resolution, and prevention.
    • Fraud prevention: Detection tools and procurement strategies.
    • Rules and compliance: Network rules, PCI compliance, and consumer protection laws.
    • Day-to-day operations: Reconciliation, payouts, holds, and risk team management.
    • Step-by-step playbooks: Immediate actions for when systems or processes fail.
    • Reference tables: Technical codes, thresholds, deadlines, and definitions.

  4. Overview of Visa Rapid Dispute Resolution (RDR)

    Visa Rapid Dispute Resolution (RDR) is a service that automatically refunds Visa cardholders when a dispute matches pre-defined merchant rules. This process happens before a formal chargeback is filed, effectively keeping the dispute off the merchant's chargeback ratio.

    Key constraints and characteristics:

    • Visa Only: Does not support Mastercard, Amex, or Discover.
    • Automatic Execution: Once rules are set, matching disputes are settled automatically without merchant review.
    • Financial Impact: The merchant is debited for the refund; RDR is not insurance. It trades the cost of a per-case fee for the avoidance of chargeback fees and ratio damage.
    • VAMP Impact: While it prevents the chargeback, fraud reports (TC40s) still count toward the Visa Account Monitoring Program (VAMP).

  5. Overview of Global Real-Time Payment Systems

    Most developed economies have adopted real-time payment infrastructure. While limits and specific rails differ, they generally share the same pattern: push-only, 24/7 availability, settlement in seconds, and high irrevocability (often using ISO 20022 messaging).
    Country/RegionSystemKey Characteristics
    UKFaster Payments (FPS)Launched 2008, £1M limit, 24/7
    EUSEPA Instant10s max, €100K cap removed Oct 2025
    BrazilPIXCentral bank-run, near-zero cost
    IndiaUPI20B+ monthly transactions, near-zero MDR
    SingaporePayNowLinks to phone numbers, 24/7
    AustraliaNPP/PayIDReal-time with phone/email addressing
    MexicoSPEISame-day, moving toward instant

  6. Overview of Behavioral Analytics for Fraud Detection

    Behavioral analytics detects fraud by analyzing how users interact with a platform rather than just what they do. While fraudsters can steal credentials, they cannot easily replicate a legitimate user's unique behavioral patterns, such as typing rhythm, mouse movement curves, and navigation flow. This approach is primarily used for Account Takeover (ATO) detection, bot detection, and identifying fraud rings.

  7. Overview of Checkout.com Payment Processing

    Checkout.com is a London-headquartered online payment processor designed for scale-ups and enterprises, particularly those in fintech, digital goods, travel, or marketplace verticals. It provides global acquiring and a modern API similar to Stripe's, focusing on payment optimization (network tokens, intelligent retry, account updater). It is an online-only processor and does not offer card-present or POS solutions.

  8. Checkout.com Product Overview and Capabilities

    Checkout.com is an online-focused payment processor providing a modern REST API, SDKs for major languages, hosted payment pages, and embeddable components. Key technical features include webhooks with retry logic, a sandbox environment, and idempotency keys. It is designed for high-volume, API-first businesses such as fintechs, digital wallets, travel, hospitality, and gaming. Note that Checkout.com does not provide proprietary POS hardware for card-present transactions.

  9. PCI DSS 4.0 Security Requirements Overview

    PCI DSS 4.0 outlines critical security requirements for protecting cardholder data (CHD) and the Cardholder Data Environment (CDE):

    • Secure Systems (Req 6): Use risk-based patching (critical patches within one month) and a secure SDLC. Req 6.4.3 specifically requires managing all payment page scripts (e.g., JavaScript).
    • Access Control (Req 7 & 8): Implement minimum privileges and 'default deny'. All CDE access requires Multi-Factor Authentication (MFA). Passwords must be 12 characters (8 if the system is limited). Accounts must lock after 10 failed attempts.
    • Physical Security (Req 9): Restrict and control physical access to the CDE and media containing CHD.
    • Monitoring & Testing (Req 10 & 11): Maintain audit trails for 12 months (3 months immediately available) and review logs daily. Perform quarterly wireless testing, quarterly ASV vulnerability scans, and annual penetration tests. Req 11.6.1 requires detecting unauthorized payment page changes.
    • Information Security Policy (Req 12): Conduct annual risk assessments, maintain acceptable use policies, and implement an incident response plan.

  10. Use Compelling Evidence 3.0 to win fraud disputes

    Visa's Compelling Evidence 3.0 rule allows merchants to win fraud disputes by proving that the same device or IP address was used for previous undisputed transactions by the same cardholder. This helps prove the cardholder is lying about the transaction being unauthorized.

  11. Understand Payment Tokenization for PCI Scope Reduction

    Tokenization replaces a sensitive Primary Account Number (PAN) with a non-sensitive, randomly generated token (e.g., tok_1Abc23Def456Ghi7). This process reduces PCI DSS compliance requirements by ensuring the merchant's database never stores actual card numbers, thereby lowering breach liability and shrinking the PCI scope (e.g., moving from SAQ D to SAQ A-EP).

  12. Understand Visa Rapid Dispute Resolution (RDR)

    Rapid Dispute Resolution (RDR) is a Visa-only automated pre-dispute service. When a Visa cardholder disputes a charge that matches pre-configured rules, Visa automatically refunds the cardholder from the merchant's account. This prevents a formal chargeback from being filed, meaning the dispute does not count toward the merchant's chargeback ratio and requires no manual intervention.