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  2. Luhn algorithm - Wikipedia

    en.wikipedia.org/wiki/Luhn_algorithm

    The Luhn algorithm or Luhn formula, also known as the "modulus 10" or "mod 10" algorithm, named after its creator, IBM scientist Hans Peter Luhn, is a simple check digit formula used to validate a variety of identification numbers.

  3. Payment card number - Wikipedia

    en.wikipedia.org/wiki/Payment_card_number

    On 3 November 2014, Mastercard announced that they were introducing a new series of BIN ranges that begin with a "2" (222100–272099). The "2" series BINs will be processed the same as the "51–55" series BINs are today. They became active 14 October 2016. On 23 July 2014 JSC NSPK was established in the Russian Federation.

  4. Controlled payment number - Wikipedia

    en.wikipedia.org/wiki/Controlled_payment_number

    January 2009, MasterCard and Cyota Inc. acquired the controlled payment number system developed by Orbiscom, a Dublin-based payment processing company. [2] In the United States, the system is used by the following credit card issuers: Bank of America "ShopSafe" (inherited when it acquired MBNA) (and now discontinued-see below) [3] and Citibank "Virtual Account Numbers". [4]

  5. Tokenization (data security) - Wikipedia

    en.wikipedia.org/wiki/Tokenization_(data_security)

    Tokenization, as applied to payment card data, is often implemented to meet this mandate, replacing credit card and ACH numbers in some systems with a random value or string of characters. [41] Tokens can be formatted in a variety of ways. [ 42 ]

  6. Carding (fraud) - Wikipedia

    en.wikipedia.org/wiki/Carding_(fraud)

    One of the first books written about carding, 100% Internet Credit Card Fraud Protected, featured content produced by "Hawk" of carding group "Universal Carders". It described the spring 1999 hack and credit card theft on CyberCash , the stratification of carder proficiencies ( script kiddie through to professionals) common purchases for each ...

  7. How credit card companies make money - AOL

    www.aol.com/finance/credit-card-companies-money...

    Credit card companies generate most of their income through interest charges, cardholder fees and transaction fees paid by businesses that accept credit cards.

  8. AOL Help

    help.aol.com

    Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.

  9. Credit card - Wikipedia

    en.wikipedia.org/wiki/Credit_card

    A credit card is a payment card, usually issued by a bank, allowing its users to purchase goods or services, or withdraw cash, on credit. Using the card thus accrues debt that has to be repaid later. [1] Credit cards are one of the most widely used forms of payment across the world. [2]