To secure the future of “new clockwork,” research must overcome the current vulnerabilities of cyber-physical systems to malicious timing attacks. Such attacks can take a wide range of forms—from physical to cyber to a mixture of both— and can cause a wide range of impacts—from local outages to system-wide failures. This paper presents four “needs” that, if properly addressed, will lead to a better understanding of the impact of malicious timing attacks on today’s CPS and offer a secure time transfer protocol to defend future CPS from such threats.  

Cite and download the white paper:
K.D. Wesson, T.E. Humphreys, and B.L. Evans, "Position Paper: Secure Time Transfer for CPS ," National Workshop on the New Clockwork for Time-Critical Cyber-Physical Systems, Baltimore, MD, 2012.