Aspects described herein relate a computer system detecting an unusual activity event from activity data and sending a two-way notification message to a wireless device when a user has opt-in for a mobile application. The two-way push notification message is received at a wireless device and notification information is displayed at the wireless device outside the mobile application. The user selects one of the displayed action buttons to indicate whether the unusual activity event is valid or invalid. When a response to the computer system indicates that the unusual activity is valid, the computer system clears the inquiry and sends a subsequent push notification message to the wireless device informing the user. When the response indicates that the unusual activity is invalid, the computer system and the wireless device may establish an interaction through the mobile application in order to resolve the unusual activity event.