Short answer
A CVV dump is a copy of the data stored on a payment card magnetic stripe. Track data means the raw characters on Track 1 or Track 2 of that stripe. The phrase "cvv dump format track data" comes from criminal marketplaces. Sellers pair stolen stripe data with the printed card verification code and label the bundle with a field order. That field order follows ISO/IEC 7813. No payment processor, gateway, or bank asks a merchant to send track data in this shape.
What a dump holds
A magnetic stripe carries two tracks used in payments. Track 1 holds the cardholder name and the primary account number in a 79-character record. Track 2 holds the PAN, the expiration date, a three-digit service code, and discretionary data from the issuer, in a record of up to 40 characters. Some cards also have Track 3. Authorization does not use it.
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Both tracks open and close with sentinel characters. The PAN runs up to 19 digits. A separator character splits the PAN from the expiration date in YYMM form. The service code sets the interchange rules for the terminal.
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Why the CVV label is imprecise
Card verification values sit apart from track data. Visa prints CVV2, Mastercard prints CVC2, American Express prints CID, Discover prints a Card Identification Number. That code is printed on the card face, not encoded on the stripe. The check value inside the stripe discretionary field is generated by the issuer and differs from the printed code. Sellers blend the two terms in listings.
How listings are labeled
Marketplace listings string fields in a set order: PAN, expiration, service code, cardholder name, billing address, and the printed verification code. Separators and order change by seller and over time. Seller templates vary. Counts quoted in forums are not verifiable. Treat any published template as unconfirmed.
US law
18 U.S.C. 1029 covers fraud and related activity in connection with access devices. Producing, selling, or possessing card account data with intent to defraud falls under it. Penalties reach 15 years for a first offense in some clauses. 18 U.S.C. 1028 covers identity documents. Wire fraud charges under 18 U.S.C. 1343 often follow.
PCI DSS rule
PCI DSS Requirement 3.2 bars storage of sensitive authentication data after authorization. That set includes full track data, the card verification code, and the PIN block. A merchant that keeps a dump file after a transaction is out of compliance, even with encryption in place. Tokenization and point-to-point encryption remove the stripe data from the merchant system before it reaches storage.
What merchants should do
- Confirm no system writes Track 1 or Track 2 to disk, logs, or a queue.
- Turn on tokenization at the processor so the PAN does not land in the order database.
- Request CVV2 during checkout and discard it. Storage is a violation.
- Run address verification on card-not-present orders.
- Check the service code in authorization responses for signs of a replayed stripe.
What cardholders should do
- Review statements for small test charges.
- Dispute unauthorized charges under the Fair Credit Billing Act, 15 U.S.C. 1666.
- Ask the issuer for a new number after a breach notice.
- Check card readers at gas pumps and ATMs for attached skimmers.