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Payment Systems
In payment systems, an “appeal” is the process of objecting to the outcome of a transaction dispute. It is usually discussed alongside chargebacks, but it plays a critical role in interbank dispute resolution, when a party asks the card scheme to re-evaluate a concluded decision.
Laws & Regulations
No. There is an exemption for technical service providers that offer IT support for the provision of payment services. However, they have responsibilities under the Communiqué on outsourcing and information security.
HSM & Security
TMK stands for Terminal Master Key, a key-encrypting key distributed manually or automatically under a previously established TMK. It is used to distribute data encryption keys to an ATM or POS terminal within a local network.
HSM & Security
Below are the properties and descriptions of the DES and AES keys used for encryption: DES (Data Encryption Standard) and AES (Advanced Encryption Standard) are both symmetric block ciphers. DES is a symmetric block cipher with a 56-bit key length...
Merchant & POS
The most important part of issuer data definitions is that they are built around your own bank's or institution's developments and application flows. Missing BINs can break installments, rewards and routing on POS devices.
HSM & Security
KEK (Key Encryption Key) is an encryption key used to encrypt the DEK (Data Encryption Key) and decrypt the encrypted DEK. The relationship between KEK and DEK: in encryption systems, keys are managed in a layered structure.
Merchant & POS
The number of POS terminals, ATMs and cards in Türkiye is reported by BKM and updated monthly. Here is the link and how to read the figures.
E-commerce
With the growth of the internet and its global reach, companies have increasingly begun to deliver their products to more people in foreign markets through online channels. This gives sellers an advantage beyond the domestic market and gives consumers wider access to products.
Security
When you visit a website, the protocol it supports appears at the left of the web address. Secure data transfers likewise use protocols that support http or https. Let's first take a brief look at what HTTP and HTTPS are.
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.
HSM & Security
ZWK stands for Zone Working Key. It encrypts the PIN so that it can travel securely between different financial institutions, such as the acquiring bank and the issuing bank.
Credit Card
Although card usage today is shifting from physical use toward virtual use, physical card production, personalization, and printing remain vital steps in card manufacturing. Here are the companies that produce and personalize cards in Turkey.