1. A method for protecting contents of a computing device, the method comprising: receiving a request to perform an action associated with a content item included in an image comprising a plurality of content items; accessing security level information associated with the content item and stored in the image by a trusted provider of the image, the security level information indicative of how each content item may be modified, the security level information comprising an integrity check action and a resultant behavior associated with the content item, wherein each of the plurality of content items of the image is associated with security level information for the content item, and wherein the integrity check action is selected from a plurality of integrity check actions, and the resultant behavior is selected from a plurality of resultant behaviors; performing the integrity check action associated with the content item; and performing the resultant behavior associated with the content item responsive to the integrity check action indicating that the action requested cannot be performed.