A method sanitizes a virtualized composite service. One or more processors provide a sanitization policy for each image within the virtualized composite service. The processor(s) analyze sanitization policies for multiple images in the virtualized composite service in order to detect inconsistencies among the sanitization policies. The processor(s), in response to finding inconsistencies between the sanitization policies, resolve the inconsistencies to produce a consistent sanitization policy, and then use the consistent sanitization policy to sanitize the virtualized composite service to create a sanitized virtualized composite service. The processor(s) receive a request for the virtualized composite service from a requester, and then respond to the request for the virtualized composite service by returning the sanitized virtualized composite service to the requester.