Abstract: Examples describe data security for communication systems. One example includes validating a merchant system using merchant data and generating a set of merchant credentials. The set of merchant credentials is then used in authentication to facilitate a secure transaction, which involves automatically generating transaction data with a tokenized client account number associated with the secure transaction. A refund request associated with the secure transaction is received with the set of merchant credentials that are used for automatically authenticating the merchant system. The example then involves accessing a database that includes the transaction data for automatically facilitating settlement of a refund payment using the authenticated merchant system and the transaction data.

Abstract: Examples describe data security for communication systems. One example includes validating a merchant system using merchant data and generating a set of merchant credentials. The set of merchant credentials is then used in authentication to facilitate a secure transaction, which involves automatically generating transaction data with a tokenized client account number associated with the secure transaction. A refund request associated with the secure transaction is received with the set of merchant credentials that are used for automatically authenticating the merchant system. The example then involves accessing a database that includes the transaction data for automatically facilitating settlement of a refund payment using the authenticated merchant system and the transaction data.

Abstract: Examples describe data security for communication systems. One example includes validating a user device using secure user data and generating a long term token for the user device, where the long term token is generated with a randomized unique token system. The method further includes receiving a transaction communication associated with a secure transaction, the transaction communication including the long term token, generating a transaction token that is different than the long term token for the transaction communication using the long term token from the transaction communication, and facilitating the secure transaction using the transaction token and the long term token.

Abstract: Examples describe data security for communication systems. One example includes validating a merchant system using merchant data and generating a set of merchant credentials. The set of merchant credentials is then used in authentication to facilitate a secure transaction, which involves automatically generating transaction data with a tokenized client account number associated with the secure transaction. A refund request associated with the secure transaction is received with the set of merchant credentials that are used for automatically authenticating the merchant system. The example then involves accessing a database that includes the transaction data for automatically facilitating settlement of a refund payment using the authenticated merchant system and the transaction data.

Abstract: Examples described herein include systems, methods, instructions, and other implementations for data security. One example includes receiving a status inquiry associated with a secure transaction, a merchant system, and a client device. The status inquiry is processed to determine that the merchant system associated with the status inquiry has been previously validated and that the status inquiry is from the merchant system. Then, in response to the determination that the merchant system has been previously validated, postback data including a tokenized client account number associated with client information is accessed and the tokenized client account number is transmitted. The tokenized client account number facilitates processing the secure transaction without the merchant system having access to the client information.