ISO/IEC is the best-known standard in the family providing requirements for an information security management system (ISMS). There are more than a dozen standards in the family, you can see them here. What is an ISMS? An ISMS is a systematic approach to managing sensitive company information so that it remains secure. An Overview of ISO/IEC family of Information Security Management System Standards Published by the Office of the Government Chief Information Officer in April (Updated in November ) 4 Family of ISO/IEC The ISO/IEC family of standards (see Appendix B) consists of inter-related standards and. The ISO/IEC series (also known as the 'ISMS Family of Standards' or 'ISO27K' for short) comprises information security standards published jointly by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC).