> ## Documentation Index
> Fetch the complete documentation index at: https://www.bitnob.dev/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Bitnob API requests authenticate with an `X-Auth-Client` API key header against https://api.bitnob.com.
> Always use the sandbox environment for testing. Never put live API keys in sample code.
> Money amounts are integers in the smallest unit of the currency (satoshis for BTC, cents for fiat). Never use floats.
> Every state-changing request takes a client-supplied `reference` and must be treated as idempotent on retry.
> Quotes expire. Re-quote rather than reusing a stale quote id.

# Virtual card fraud course

> A 10-module course on virtual card fraud: MCCs, BINs, fraud patterns, controls, and staying audit-ready.

10 modules on virtual card fraud: how it happens, how to detect it, and how to stay audit-ready when it does.

This course is written for risk, fraud, compliance, and support teams running a card product in production. It covers:

* Fraud patterns specific to virtual cards, from MCC and BIN abuse to chargeback fraud,
* Transaction pattern detection and control design,
* Incident response and post-fraud investigation workflows,
* Logging, audit trails, PCI-DSS, and scheme requirements.

## Full table of contents

| Module | Title |
| - | - |
| 1 | Introduction to virtual card fraud |
| 2 | Understanding and preventing virtual card fraud |
| 3 | Incident response and post-fraud investigation workflows |
| 4 | MCC and BIN-based threats and controls |
| 5 | Refund, reversal, and chargeback abuse |
| 6 | Transaction pattern detection |
| 7 | Designing controls and prevention systems |
| 8 | Logging, audit trails, and incident reporting |
| 9 | Compliance, PCI-DSS, and scheme requirements |
| 10 | Capstone simulation: end-to-end fraud and risk response |


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