The property of being genuine and being able to be verified and trusted; confidence in the validity of a transmission, a message, or message originator.
Rashid, A., Chivers, H., Danezis, G., Lupu, E., & Martin, A. (Eds.). (2021). The Cyber Security Body of Knowledge (CyBOK) Version 1.1. The National Cyber Security Centre. https://www.cybok.org