Systems and methods herein discuss a policy engine stored on a mobile device that intercepts content requests to a content provider. The policy engine is self-preserving, and may, subsequent to intercepting the content requests and based upon a determination that the requesting entity is associated with a whitelist; blocking, by the policy engine. The policy engine may in some cases transmit at least some of the requested content in response to a determination that the requesting application is associated with a blacklist or may transmit an HTTP200 response to the requesting entity based on a determination that the requesting application anticipates a response.