Card Dump 101:

A card dump (or credit card dump) is a type of cybercrime where data from the magnetic stripe of a physical payment card is stolen and illegally copied. This information is compiled into lists or “dumps” and sold on underground dark web marketplaces. How Criminals Get the Data

Thieves use several technical and physical methods to extract data from target cards:

Skimming: Modifying real point-of-sale (POS) terminals, gas pumps, or ATMs with an illegal reader to copy magnetic stripe data.

POS Malware: Infecting a merchant’s payment terminal software to capture transaction data as it is processed.

Database Breaches: Hacking into a large company’s server network to copy millions of customer payment files at once. Dumps vs. Card Credentials (CC)

In cybersecurity and illicit carding forums, a distinction is made between “dumps” and standard card details: Card Dumps Card Credentials (CC) Data Format Raw Track 1 and Track 2 magnetic stripe data. Text-based data (Cardholder name, 16 digits, CVV). Primary Use In-person fraud by cloning physical cards. Online, Card-not-Present (CNP) purchases. Extraction Source Skimmers, infected ATMs, or terminal malware. Phishing sites, retail hacks, or spyware. How Stolen Dumps Are Used

Once a cybercriminal purchases a dump from an underground card shop, they typically use an electronic reader/writer device to write the Track data onto a blank plastic card with a magnetic stripe. This cloned card is then used to buy high-value goods at physical brick-and-mortar stores or to withdraw cash from ATMs if a PIN was also compromised. How to Protect Yourself How Credit Card Dumps Work – Warsaw Federal