Abstract: The disclosed computer-implemented method for utilizing user identity notifications to protect against potential privacy attacks on mobile devices may include (i) monitoring a mobile computing device to detect one or more user interactions by a current user, (ii) identifying the current user of the mobile computing device, (iii) determining that the current user is a potentially malicious user associated with one or more privacy-invasive applications installed on the mobile computing device, and (iv) performing a security action that protects a benign user of the mobile computing device against an attack initiated by the potentially malicious user associated with the privacy-invasive applications. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: Disclosed herein are systems, methods, and computer-readable storage devices for processing anonymous micro-transactions of any type, such as purchases, donations, subscriptions, rewards, and so forth. An example system configured for subscriptions can register a user by assigning the user an anonymous user identifier, and prefund a payment account associated with the anonymous user identifier from a third party payment service, based on authorization from the user. This process can be part of a separate registration phase prior to attempting any transactions. Then, the system can complete a subscription transaction as a micro-transaction via the payment account on behalf of the user in response to a user request made via a micro-transaction button on a website, for example. The system can maintain a subscription transaction history for the payment account, and confirm, upon request from a merchant, validity of the subscription transaction based on the transaction history.