OPSEC is a process of identifying critical information and subsequently analyzing friendly actions attendant to military operations and other activities to:
a. Identify those actions that can be observed by adversary intelligence systems;
b. Determine what indicators hostile intelligence systems might obtain that could be interpreted or pieced together to derive
critical information in time to be useful to adversaries; and
c. Select and execute measures that eliminate or reduce to an acceptable level the vulnerabilities of friendly actions to
OPSEC Primer - "These pages were prepared by the SEC Security Office at Fort Monmouth, NJ with help from the U.S. Department of Energy as part of the OPSEC awareness program, and is intended to serve as a basic introduction to OPSEC."