Abstract: Examples described herein include systems, methods, instructions, and other implementations for data security with integrated promotion systems. In one example, account security system receives a checkout communication that includes data describing a validated checkout system of a merchant system, where the checkout communication does not include a purchase promotion option. A client token is transmitted in response to an authentication that the checkout communication is from the validated checkout system, and an account communication including the client token and secure client information is received from a client device. A plurality of promotion options associated with the secure transaction is transmitted in response to the account communication, and a promotion selection for the secure transaction is received from the client device and not from the merchant system.

Abstract: The disclosure is directed to a continuously and automatically updated authentication mechanism for authentication, in real-time, the processing of transactions at point of sales devices based on corresponding target-specific identifiers. In one aspect, a processing server includes one or more memories having computer-readable instructions stored therein, and one or more processors. The one or more processors are configured to execute the computer-readable instructions to receive a request for processing a transaction; identify a merchant-specific identifier for a merchant associated with the transaction; determine, in real-time and using a machine trained model, whether the merchant-specific identifier is a valid merchant-specific identifier or not; and process the transaction based on whether the machine trained model indicates that the merchant-specific identifier is valid or not.

Abstract: Examples described herein include systems, methods, instructions, and other implementations for data security with integrated promotion systems. In one example, account security system receives a checkout communication that includes data describing a validated checkout system of a merchant system, where the checkout communication does not include a purchase promotion option. A client token is transmitted in response to an authentication that the checkout communication is from the validated checkout system, and an account communication including the client token and secure client information is received from a client device. A plurality of promotion options associated with the secure transaction is transmitted in response to the account communication, and a promotion selection for the secure transaction is received from the client device and not from the merchant system.

Abstract: Examples described herein include systems, methods, instructions, and other implementations of transactional promotions. One embodiment includes receipt of an authorization request message for a transaction associated with an account number. The authorization request message includes a merchant category code and does not include promotion information. A determination is then made that the transaction is eligible for a promotion based on the merchant category code. The promotion is then automatically applied to the transaction at the account number, and an authorization response message is then generated authorizing the transaction.