A generation device according to the present application includes: an acquisition unit which acquires content targeted for disclosure (for example, an image which a user desires to disclose) and policy information which indicates a disclosure policy of the content (for example, a text which the user inputs as a caption of the image); and a generation unit which generates modified content in which a predetermined part of the content is modified based on the disclosure policy indicated by the policy information (for example, content in which an object identified based on the disclosure policy is emphasized).