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Security
Forgery in card payments means transactions made with card details without the cardholder's knowledge, or purchases with counterfeit or stolen cards. Merchants cannot eliminate fraud and chargeback risk, but they should aim to reduce it to reasonable levels.
Payment Systems
PA DSS (Payment Application Data Security Standard) is a global security standard created by the PCI SSC. Even if you do not need to comply with it, PA DSS remains a valuable guide for auditing and building secure payment applications.
Credit Card
If you can't use your card for e-commerce transactions abroad, first check that e-commerce authorization is enabled, that 3D Secure has been set up, and that your bank's authorization system is active. The issue may also originate from the merchant's bank.
Merchant & POS
Many transactions are carried out with cards on a POS terminal. Sometimes a transaction must be reversed, and cancellation (void) is one such transaction. A Sale can only be cancelled on the POS before the batch (end of day) is closed; otherwise a refund is needed.
Chargeback
A chargeback is when a cardholder asks the issuing bank to refund a transaction made without their knowledge. It cannot be prevented entirely, but simple precautions can minimize the risk. Here is how the process works and what cardholders should do.
Payment Systems
The Central Bank has published a guide setting out the detailed technical principles and rules for using TR Karekod in card payment transactions, based on the TR Karekod Regulation and the TR Karekod Principles and Rules.
Credit Card
What is BKM Express? BKM Express is a technical infrastructure solution developed by BKM that lets you pay securely for online purchases without sharing your card's full details. What are the advantages of BKM Express? To register your card you don't need to enter all…
3D Secure
Especially with the growth of the internet, credit card transactions have started shifting from physical POS terminals to virtual POS terminals. In virtual transactions, the 3D Secure structure is used instead of the card PIN entered in physical transactions. So how is a transaction's…
Credit Card
Track3 is a field that doesn't need to be written to the card's magnetic stripe. It's used only in very specific cases and isn't required for authorization transactions. Issuers generally don't encode Track3 data onto the card's magnetic stripe. It consists of 104 numeric characters.
ISO 8583
F124 (Private Additional Data) contains additional information specific to the transaction, such as Card Update Failure Code and Status, cardholder name in money transfers, and keys in network management messages.
Credit Card
KKB was established, under banking law, to enable the exchange of all kinds of information and documents among at least five banks, and it also shares credit information about customers. The Credit Bureau of Turkey also serves deposit banks, participation banks, financial institutions, and more.
Credit Card
If your card is broken, call your bank's Customer Contact Center to request a renewal. Since the card number usually stays the same after renewal, this is convenient for you. If you'll keep using the card, don't set it to Closed or Cancelled status.