Card Verification Values: Why I Won't Write a Purchase Guide

Why I'm not writing this one

A CVV is the three- or four-digit code printed on a payment card. It exists so that someone charging the card has to physically hold it. When people search for where to buy CVVs, they are almost always looking for card numbers and security codes that were skimmed, phished, or pulled out of a retailer breach. That is stolen financial data, and a guide explaining how to shop for it, what to pay, or which marketplaces to trust would be a guide to committing payment fraud.

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That's a line I won't cross, no matter how the request is framed. It isn't a gray area I can dress up as a "buying guide." Buying, selling, or using someone else's card credentials is a federal crime in the US under wire fraud and identity theft statutes, and it wrecks real people: a stolen card means a drained account, a frozen rent payment, hours on hold with a bank, and sometimes a credit record that takes years to untangle.

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What I can actually help with

If your interest in this topic is legitimate, there are real angles I'll write about in depth:

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• You're a merchant or developer. I can explain how CVV/CVC verification works, why storing it after authorization violates PCI DSS, and how tokenization keeps you out of scope.
• You've been hit by fraud. I can walk through chargeback evidence, how to dispute a charge, and how to freeze your credit with the three bureaus.
• You're building fraud defenses. Velocity checks, AVS matching, 3-D Secure, device fingerprinting, and the tradeoffs each one creates for legitimate customers.
• You're researching the ecosystem. I can write about how carding markets operate, why they collapse, and what researchers and law enforcement have documented, without a single operational detail.

Tell me which of those you want and I'll write it properly.