The U.S. Department of Homeland Security (DHS) has published the IT Security Essential Body of Knowledge (EBK). A Glossary of Key Terms used in the EBK is also provided.
According to the overview on the US-CERT website:
The IT Security EBK conceptualizes IT security skill requirements in a new way to address evolving IT security challenges. The EBK characterizes the IT security workforce and provides a national baseline representing the essential knowledge and skills that IT security practitioners should have to perform specific roles and responsibilities.
The EBK was featured in a November 2007 EDUCAUSE Live! presentation when DHS was accepting comments on a draft version of the document.