The present document is a guide to developers of NFV related documents and applications in means to address the security aspects and regulatory concerns as they impact the security of deployed networks that conform with these documents and applications. The present document contains detailed descriptions of security concerns, attacks, as well as an overview of regulatory concerns and how they can be treated in system design to give the highest level of assurance that the resultant system is secure and complies with current regulation and best practice. The present document is intended for use by developers of NFV documents and the guidance is given in a manner that assists non-experts in security and regulation to prepare such documents.
 
In addition to the guidance and explanatory text the present document contains, in annex A, a pro forma template for use in ETSI ISG NFV documents to capture the security concerns and mitigations that apply.