Abstract: Methods and server systems for computing fraud risk scores for various merchants associated with an acquirer described herein. The method performed by a server system includes accessing merchant-related transaction data including merchant-related transaction indicators associated with a merchant from a transaction database. Method includes generating a merchant-related transaction features based on the merchant-related indicators. Method includes generating via risk prediction models, for a payment transaction with the merchant, merchant health and compliance risk scores, merchant terminal risk scores, merchant chargeback risk scores, and merchant activity risk scores based on the merchant-related transaction features. Method includes facilitating transmission of a notification message to an acquirer server associated with the merchant.

Abstract: The methods and systems for contact tracing disclosed herein may dynamically adjust wireless communication algorithms (such as for Bluetooth® interfaces and/or Bluetooth Low Energy (BLE) interfaces) to improve battery life, accuracy, and performance for wireless communication based contact-tracing. In some embodiments, a first wireless-communication library may be established for use in performing wireless-communication broadcasting operations and/or a second wireless-communication library may be established for use in performing wireless-communication scanning operations. The selection of the libraries may be based upon a machine-learning model for determining rates of successful wireless-communication-based data exchange.

Abstract: A method and system for distributing content from a server computer to a number of client computers is disclosed. A file to be distributed to a requesting client computer is identified. If another client computer of the plurality of client computers can distribute the file to the requesting client computer, the requesting client computer requests the file from the other client computer. If no client computer can distribute the file to the requesting client computer, the requesting client computer requests the first file from the server computer. Then the requesting client computer receives the first file from either the other client computer or the server computer. Each client computer can act both as a client and a server to the other client computers, providing content that would otherwise be provided by the server computer.

Abstract: A method and system for distributing content from a server computer to a number of client computers is disclosed. A file to be distributed to a requesting client computer is identified. If another client computer of the plurality of client computers can distribute the file to the requesting client computer, the requesting client computer requests the file from the other client computer. If no client computer can distribute the file to the requesting client computer, the requesting client computer requests the first file from the server computer. Then the requesting client computer receives the first file from either the other client computer or the server computer. Each client computer can act both as a client and a server to the other client computers, providing content that would otherwise be provided by the server computer.