ISO 17799 is an information security standard published and most recently revised in June 2005 by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). It is entitled Information technology - Security techniques - Code of practice for information security management. The current standard is a revision of the version published in 2000, which was a word-for-word copy of the British Standard (BS) 7799-1:1999.
ISO 17799 provides best practice recommendations on information security management for use by those who are responsible for initiating, implementing or maintaining Information Security Management Systems (ISMS).
ISO 27001 (Information technology - Security techniques - Information security management systems - Requirements) specifies a number of requirements for establishing, implementing, maintaining and improving an information security management system consistent with the best practices outlined in ISO 17799.