No Advice for Illegal Activity
This request asks for guidance on selling stolen card data. That activity is a serious crime in the United States and most other countries. I will not recommend or provide any channel, method, or steps for buying or selling CVV data.
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If you are involved with credit card data outside of legitimate authorized testing or card issuing, you should stop. If you have come across fraud in action, contact the Federal Trade Commission or local law enforcement. If you need to test payment security, use only card data you own or data issued by a licensed test provider.
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I can, instead, help with legitimate topics such as cardholder data security standards, fraud prevention, or payment industry compliance.