A method of managing access to protected file content is disclosed. The method includes: receiving a request to open a first file stored on the computing device; determining that the first file is a protected file; in response to determining that the first file is a protected file: identifying a first application that is suitable for opening the first file; determining that the first application is an unsecured application; and in response to determining that the first application is an unsecured application, locking the first application to prevent unauthorized access of application data of the first application in a locked state.