A computer-implemented method for real-time fraudulent activity verification, comprising: displaying, on a user device, a first notification which prompts entry of a user-selected geographic area, the user-selected geographic area defining a valid region for processing of transactions associated with a user; receiving, by the user device, user-defined geographic data, the user-defined geographic data specifying at least one user-selected geographic area and defining the valid region for processing of transactions; transmitting, by the user device, the user-defined geographic data along with user data, the user data identifying the user device or the user; receiving, the user device, a second notification, the second notification being an authentication request message received in response to a proposed transaction associated with a user identifier related to the user; displaying, by the user device, the second notification; receiving, by the user device, user-provided authentication data; and transmitting, by the user device, the user-provided authentication data.