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"Payment Fraud"

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Illustration representing electronic payment systems

Payment Systems

What are Payment Systems?

Let's talk about payment systems, which we have heard more about since the internet entered our lives, and the basic structures behind them. The first credit card in the world was used in America in the 1920s.

Diagram comparing the refund and chargeback processes

Merchant & POS

Is There a Difference Between Refund and Chargeback?

Let's first look at chargeback and refund: a chargeback returns the amount paid to a credit card when goods or services are not received, or when transactions not made by the cardholder are detected.

Illustration of a Card Not Present (CNP) online payment transaction

Credit Card

What Is a CNP (Card Not Present) Transaction?

CNP refers to a transaction made through a website or a company's own app payment page, where the card is not read by any device and its details are entered manually. It is short for Card Not Present.

Payment card being checked against a card recovery bulletin of problem cards

Merchant & POS

What Is a Card Recovery Bulletin (Card Protection Bulletin)?

A Card Recovery Bulletin is a list of problem cards (lost, stolen, expired, over-limit, counterfeit or otherwise flagged) published by card schemes such as Visa or MasterCard. It shows whether a card number is listed on the date of purchase.

EMV chip card illustration

Online & Authorization

What is EMV?

EMV stands for Europay, Mastercard and Visa. In 1994 these companies formed a working group to set chip-card standards, leading to the EMV standards used worldwide today.

Comparison of CVV security code locations on a standard card and an American Express card

Credit Card

Is the CVV/CVC Code Always 3 Digits?

First, let's briefly explain CVV/CVC. CVV stands for Card Verification Value, a term used for Visa. CVC stands for Card Verification Code, a term used for MasterCard. The CVV/CVC code is used for cardholder verification and to reduce fraud risk.

Illustration representing the products and services KKB offers directly to its member institutions

Credit Card

What Products and Services Does KKB Offer Directly to Members?

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.

Istanbulkart transit and payment card

Credit Card

Istanbulkart: Both Transit Card and Payment Card

When I think back to the Akbil I used when I first arrived in Istanbul, I think it's fair to say that Istanbulkart has undergone a very significant transformation. Users can now track activity, top up and view balances right from their phones.

Diagram illustrating the types of chargeback disputes in card payments

Chargeback

What are the chargeback dispute types?

A chargeback is a dispute raised against a card transaction when the cardholder did not make it or does not recall it. The dispute types vary depending on the situation; let's look at them.

Illustration for a glossary of cryptocurrency terms such as Bitcoin, blockchain and mining

Cryptocurrency

What Are the Terms Used in the Cryptocurrency World?

Cryptocurrencies are becoming part of everyday life and are expected to compete seriously with card payments. This glossary explains the key crypto terms, from address, altcoin and arbitrage to halving, mining, proof of stake and stop-loss.

Illustration representing the chargeback and dispute process in card payments

Chargeback

What Are the Domestic Exceptions to Chargeback Rules?

A chargeback is the refund of an amount paid by credit card to the cardholder's card when the purchased goods or services were not received, or when a transaction was not actually carried out by the cardholder.