FIG. 5 shows an exemplary graphical user interface 502 that may include a warning prompt 504 and/or a sensitive data prompt 506. As further shown in this figure, warning prompt 504 may warn a user that a specified application is attempting to output a data object in an unreadable or obfuscated format (in this example, a .JPG format). Additionally or alternatively, graphical user interface 502 may also display image 402 and/or sensitive data 234 for the convenience and reference of the user. Notably, a human user may immediately perceive that image 402 includes an item of sensitive data (i.e., the Social Security number 324-34-8537) that was also accessed by the application, as further shown in sensitive data 234 within graphical user interface 502. Accordingly, graphical user interface 502 may enable a user to readily ascertain whether the output of the data object should be permitted. Moreover, graphical user interface 502 may also enable a user to distinguish between textual data within the image or multimedia object that corresponds to sensitive data 234 accessed by the application and other textual data that does not correspond to sensitive data 234. In other words, the presence of sensitive data 234 within graphical user interface 502 may enable the user to more quickly and conveniently determine whether any textual content within the multimedia data object constitutes sensitive data protected by the data loss prevention policy.