The invention provides a method, apparatus and mobile terminal for improving
payment security, and belongs to the field of computers. The method comprises following steps: monitoring popup window notifications triggered by application programs; determining whether
payment features are included in the popup window notifications; shielding the authority for sending
payment short messages through the application programs when the payment features are included in the popup window notifications, and reminding users of inputting preset
authentication information; receiving the
authentication information and verifying the validity of the
authentication information; and executing payment operations when the
authentication information is valid. By employing the method provided by the embodiment of the invention, when the popup window notifications including the payment features are found in an operation
system, the mobile terminal is determined that short message payment occurs, the users are reminded of inputting the
authentication information at the moment, and the payment only can be completed when the input
authentication information is valid, so that a problem that the payment operations are clicked by mistakes during the payment is effectively solved, property losses for the users are prevented, and the security of the payment is improved.