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HSM & Security
ZMK is short for Zone Master Key. It is the key used to transport a key from one environment to another. In short, we can say ZMK is the main transport vehicle. The key that two parties use to encrypt and exchange new ZPKs is the ZMK.
Credit Card
A co-badge card is issued under two or more payment schemes (Mastercard, Troy, Diners Club, Discover, etc.). If a bank's product supports multiple schemes, customers can request a card carrying two or more payment brands.
Credit Card
A credit card is a payment instrument that lets a customer borrow up to a limit set by the bank after evaluating certain criteria. Transactions made on the card are first recorded in the current-period transactions, then posted as debt on the statement date.
Fraud
Fraud management is used to detect possible fraud on customer accounts and provides additional security for transactions when necessary, making it one of the top priorities for banks.
Credit Card
A 2-character field written to the card's chip data that increases by 1 with each card renewal, allowing authorization to distinguish between the old and new card. This means that, theoretically, assuming no other conditions prevent it, a...
Merchant & POS
Chip&Pin, introduced in Turkey on March 31, 2006, is a payment method that greatly reduces the risks of card copying and loss or theft fraud. The chip on the card reduces copying risk, while the 4-digit PIN prevents unauthorized use of a lost card.
Merchant & POS
When a chip card transaction is made at a POS, it may be approved by the card and the POS alone, without reaching any system (issuer or acquirer). When do the issuer and acquirer find out about it?
Merchant & POS
In chip transactions made with a credit card via POS, the transaction amount is approved by the card and POS based on parameters on the card and POS, without going to the card bank or POS bank. These are called offline transactions.
Credit Card
A real attempted card fraud story: a fake Facebook friend request, a promise of free bank points, and a request for card number, expiry date and CVV2. Here is what happened and how to protect yourself.
ATM
Because the ATM is the channel where customers physically handle cash, fraud cases happen there very often. Here are the precautions you can take to use ATMs safely.
ATM
The units that let an ATM receive data are called Input Units, and the units that display data are called Output Units. Learn about the card reader, keypad, speaker, display, receipt printer, and cash dispenser.
Credit Card
Issuer Script Results is the field that shows the results of the Issuer Script commands sent to the card. This post explains its byte and bit values, what an issuer script is, why the results matter, and what happens when a command fails.