Selling CVV numbers is a crime, not a side hustle
I can't give you a guide on how to sell CVV numbers because that's carding, plain and simple. CVV and CVC codes are security features designed to prove the cardholder is present. Selling them means trafficking stolen financial data. In the US, that falls under wire fraud, identity theft, and access device fraud. Penalties include prison time and heavy fines. If you're looking at a "shop" that claims to sell CVVs, it's either a scam targeting you or a front for criminal activity. Either way, you lose.
What actually happens when someone sells a CVV
The seller rarely has a real, working CVV for long. Banks and card networks monitor for unusual validation patterns. A single CVV can be burned within minutes of first use. Buyers get fake data, sellers get chargebacks or law enforcement attention. There is no legitimate marketplace for CVV numbers because the entire point of a CVV is to prevent exactly this kind of trade.
How to protect CVV data instead
If you handle card payments online, focus on keeping CVV data out of reach. Do not store CVV after authorization. Use tokenization so your systems never hold raw card numbers. Train staff to recognize phishing attempts that ask for CVV "verification." Enable velocity checks and address verification (AVS) to flag suspicious transactions. For shoppers: never share your CVV over email, chat, or phone. Legitimate merchants never ask for it outside a secure checkout page.
What to do if you encounter a CVV seller
Report it. The FBI's Internet Crime Complaint Center (IC3) takes reports on carding and CVV trafficking. The FTC also tracks identity theft and payment fraud. Do not engage with the seller, and do not send money. If you're a merchant and someone tries to sell you CVV data, that's a red flag for fraud against your business.