ISO/IEC 27001:2005 Information Technology—Security techniques—Information security management systems—Requirements is an information security management system (ISMS) standard published in October 2005 by the International Organization for Standardization (ISO) and International Electrotechnical Commission (IEC). Implementing ISO 27001 can enable enterprises to benchmark against competitors and to provide relevant information about IT security to vendors and customers, and it can enable management to demonstrate due diligence.