"The NICCS [National Initiative for Cybersecurity Careers and Studies] Portal's cybersecurity lexicon is intended to serve the cybersecurity communities of practice and interest for both the public and private sectors. It complements other lexicons such as the NISTIR [National Institute of Standards and Technology Internal Reports] 7298 Glossary of Key Information Security Terms. Objectives for lexicon are to enable clearer communication and common understanding of cybersecurity terms, through use of plain English and annotations on the definitions. The lexicon will evolve through ongoing feedback from end users and stakeholders."
National Initiative for Cybersecurity Careers and Studies: https://niccs.us-cert.gov