a method for classification and enforcement of security requirements in an information dissemination system , said information dissemination system not being designed for said security requirements and enforcement . the method comprising the steps of : accepting a user specification of said security requirements for dissemination of respective information , said specifying is done using a user interface ; associating with said dissemination system an enforcement module , said module being operable to receive said security requirements and apply them to control dissemination via said dissemination system , and then enforcing said dissemination via said module .