1. A computer-implemented method for identifying a security breach caused when a computer-based software application uses a computer-based web browser application, the method comprising: identifying, at a computer, at least one function within a computer-based software application that causes a computer-based web browser application to access data from a source that is external to said software application; at least partially replacing said data, at said computer, with malicious content that is configured to cause a predefined action to occur when said malicious content is accessed by said web browser application, wherein said predefined action is associated with a known security breach when said predefined action occurs subsequent to said malicious content being accessed by said web browser application; causing said software application to perform said function at said computer; and determining, at said computer, whether said predefined action is performed.