Abstract: Described are a method, system, and computer program product for operating dynamic shadow testing environments for machine-learning models. The method includes generating a shadow testing environment operating at least two transaction services. The method also includes receiving a plurality of transaction authorization requests. The method further includes determining a first percentage associated with a first testing policy of the first transaction service and a second percentage associated with a second testing policy of the second transaction service. The method further includes replicating in the shadow testing environment, in real-time with processing the payment transactions, a first portion of the plurality of transaction authorization requests and a second portion of the plurality of transaction authorization requests.

Abstract: Techniques for managing an application token may include providing, by a first service provider application on a communication device to a first service provider computer, a first request for a first application token, receiving, by an account management application on the communication device from a token service computer in communication with the first service provider computer, the first application token, and storing the first application token in a token container in the account management application.

Abstract: A method includes establishing, with a second computer, a first interaction channel with a first initial value associated with the first computer and a second initial value associated with the second computer, and recording them on a blockchain. The method includes conducting with the second computer, a plurality of interactions without recording the interactions on the blockchain. After that, the method includes determining a first current value associated with the first computer, which is than the first initial value. The method also includes initiating a transfer of transfer value from the first computer to a third computer. The method also includes conducting, with the second computer, an update interaction to update of the first current value by the transfer value to obtain a second current value, the second current value used by the first computer in the first interaction channel.

Abstract: Described are a system, method, and computer program product for dynamic node classification in temporal-based machine learning classification models. The method includes receiving graph data of a discrete time dynamic graph including graph snapshots, and node classifications associated with all nodes in the discrete time dynamic graph. The method includes converting the discrete time dynamic graph to a time-augmented spatio-temporal graph and generating an adjacency matrix based on a temporal walk of the time-augmented spatio-temporal graph. The method includes generating an adaptive information transition matrix based on the adjacency matrix and determining feature vectors based on the nodes and the node attribute matrix of each graph snapshot.

Abstract: Methods and systems for mobile cardholder authentication are provided. An access device can obtain interaction data produced during an interaction between a user and the resource provider computer in which the user attempts to obtain a resource from a resource provider and user device data comprising a cryptogram and supplemental data from the user device or another user device operated by the user. The cryptogram of the user device can be validated and the interaction data and user device data can be compared to determine that the user interacting with the access device is the same user as the user that interacted with the resource provider computer. The access device can provide an indication that the resource will be provided to the user responsive to determining that the user interacting with the access device is the same user as the user that interacted with the resource provider computer.

Abstract: Described herein are a system and techniques for enabling user control over usage of their information by data consumers, even when untrusted parties are involved, while also preventing collusion between the untrusted party and a data consumer. A user's information may be collected by a client device and provided to a host server. An encrypted version of the user's information may be stored at the host server so that it is processed on a private enclave of the host server. When the data is to be provided to multiple data consumers, the data may be encrypted for each of the data consumers and may be released to each of those data consumers simultaneously once confirmation has been received that the data has been made available to each of the data consumers.

Abstract: A method for maintaining user privacy in advertisement networks may include receiving first persona data associated with a first user from at least one publisher system. The first persona data may be generalized to form first generalized persona data. A session key may be generated. The first generalized persona data and the session key may be encrypted with a first public key of an advertisement network system to form a first ciphertext. The first ciphertext and first user identity data may be communicated to a mediator system. The first user identity data may be associated with first user's identity. A first encrypted targeted advertisement may be received based on the first generalized persona data from the advertisement network system via the mediator system. The first encrypted targeted advertisement may be decrypted with the session key to form a first targeted advertisement. A system and computer program product are also disclosed.

Abstract: Provided are a system, method, and computer program product for secure payment device data storage and access. The method includes storing payment device data associated with a payment device of a user and generating a unique uniform resource locator (URL) associated with the payment device. The method also includes transmitting the unique URL to an application provider system through a first communication channel and receiving a data access request from the client device via the unique URL through a second communication channel separate from the first communication channel. The method further includes, in response to receiving the data access request, verifying an identity of the user by executing a step-up authentication protocol. The method further includes, in response to verifying the identity of the user, transmitting a data access response including the payment device data to the client device through the second communication channel.

Abstract: A method for processing card not present (CNP) transactions includes: receiving an authentication transaction request including authentication transaction data associated with a CNP transaction, receiving an authorization transaction request including authorization transaction data associated with the CNP transaction; in response to receiving the authorization transaction data and the authentication transaction data, determining an authorization decision for the CNP transaction; and communicating the authorization decision. Systems for processing CNP transactions are also disclosed.

Abstract: A method of determining fraud includes: receiving a transaction request associated with a first payment transaction between a merchant and a user from a merchant system; generating a first risk score based on the transaction request and a first set pot of transaction data received prior to the transaction request; processing a transaction request approval based on the first risk score not satisfying a first threshold; receiving a risk score request associated with the first payment transaction, where the risk score request is received after the transaction request has been approved; generating a second risk score based on a second set of transaction data received after the first risk score is determined; and automatically classifying the first payment transaction as potentially fraudulent in response to determining that the second risk score satisfies a second threshold.

Abstract: Described herein is a system in which an electronic record is stored on a distributed environment with respect to an item. In this system, transactions may be conducted for an item in an anonymous fashion. In some embodiments, a first user may input an item identifier associated with an item as well as an indication of an action to be performed with respect to that item. The identifier may be transmitted to a blockchain network, which may use that identifier to locate a blockchain associated with the item. A blockchain may include a series of transaction records associated with the item, each of which is signed using a private key. Upon performance of the indicated action, the blockchain network may generate a new transaction record, append that transaction record to the blockchain, and sign the transaction record.

Abstract: A processing system for fuel transactions analyzes transactions for symbols indicating a purchase amount and directs information about the purchase to a loyalty platform. The loyalty platform may identify and communicate in real time or near real time with a personal device associated with the purchaser of the fuel. A user interface of the personal device may allow the purchaser to review and select options for processing the fuel purchase using value from a loyalty program account. The selected option may be used to modify fuel purchase parameters prior to settlement of the transaction or simply add points to the user loyalty program account.

Abstract: A computer-implemented method includes: receiving an inquiry request message identifying a first payment transaction having a plurality of transaction parameters and a risk score, where the risk score is generated by a machine-learning model based on the plurality of transaction parameters; for each transaction parameter of the plurality of transaction parameters, perturbing a value of the transaction parameter and re-analyzing the first payment transaction with the machine-learning model to generate a perturbed risk score based on the perturbed transaction parameter; determining at least one impact parameter from the plurality of transaction parameters by comparing the perturbed risk scores generated for each of the plurality of transaction parameters; and generating an inquiry response message based on the at least one impact parameter.

Abstract: Provided is a system for analyzing a multivariate time series that includes at least one processor programmed or configured to receive a time series of historical data points, determine a historical time period, determine a contemporary time period, determine a first time series of data points associated with a historical transaction metric from the historical time period, determine a second time series of data points associated with a historical target transaction metric from the historical time period, determine a third time series of data points associated with a contemporary transaction metric from the contemporary time period, and generate a machine learning model, wherein the machine learning model is configured to provide an output that comprises a predicted time series of data points associated with a contemporary target transaction metric. Methods and computer program products are also provided.

Abstract: A system and method is disclosed. The method comprises a client device receiving a verification request comprising an interaction identifier. The client device can then query a full node for a random sampling of block headers from the full node. The client device can receive the random sampling of block headers from the full node, and verify the random sampling of block headers. The client device can then determine that the blockchain maintained by the full node is valid after verifying the random sampling of block headers.

Abstract: A method is disclosed. The method includes presenting, by a user device, a completion page for a transaction to a user; capturing, by the user device, an image of the completion page; storing, by the user device, completion page image data for the image of the completion page; and presenting, by the user device, transaction data for the transaction along with the image of completion page to the user, the image of the completion page generated using the stored completion page image data.

Abstract: Provided is a computer-implemented method for performing analysis of transaction data. The method may include receiving streaming data, wherein the streaming data comprises a plurality of data identifiers and transaction data associated with each transaction of a plurality of transactions, wherein each data identifier is associated with transaction data associated with a transaction so that the transaction data associated with each transaction is separated by a data identifier, filtering the streaming data using at least one predetermined data identifier value to provide filtered transaction data, determining whether the filtered transaction data corresponds to at least one predetermined transaction parameter, and asynchronously storing the filtered transaction data associated with the at least one transaction in at least one data structure. A system and computer program product are also disclosed.

Abstract: An architecture of connected servers supports data analysis with each server using a pattern matching algorithm to determine if an individual's traits match a predetermined species or if a new species should be established. Each server may have a dedicated database and receive information from relevant sources including various reporting agencies.

Abstract: A user initiates a transaction by providing identification data at an access device. Certain elements of a validation identity token, such validation keys, may be distributed among several remote server computers. After the elements are retrieved during the transaction, the validation identity token may be generated using the retrieved elements. The validation identity token may indicate whether the user is authenticated. No single entity can possess all elements utilized to generate the validation identity token, which mitigates risk of the validation identity token being compromised. In some embodiments, the validation identity token may be a chromatic identity token, which may indicate validity by color.

Abstract: Systems and methods are described for pre-authentication access request screening. A server computer may receive a request for access to a resource comprising access data. The server computer may transmit, to an authentication computer, an authentication request message comprising at least a subset of the access data and receive an authentication response message comprising authentication data. The server computer may determine an access score based on the authentication data. Alternatively, the server computer may determine the access score based on the access data without using/receiving authorization data. The server computer may generate an access indicator based on the access score. The server computer may prepare and transmit an authorization request message comprising the access indicator to an authorization computer. The authorization computer may approve or decline the access to the resource based on the access indicator.