AR 530-1 governs Army operations security policy and procedures for protecting critical information from adversary observation and collection.
View AR 530-1 on armypubs.army.mil
AR 530-1 defines operations security, critical information, sensitive information, and OPSEC compromises. It addresses OPSEC programs, awareness and training, threat analysis, assessments and surveys, contractual reviews, reporting, and operational planning formats.
Applies to: OPSEC is applicable to all personnel, missions, and supporting activities on a daily basis.
OPSEC protects sensitive and/or critical information from adversary observation and collection in ways that traditional security programs cannot. (paragraph 1-5)
Critical information, formerly known as essential elements of friendly information, is defined as information important to the successful achievement of U.S. objectives and missions, or which may be of use to an adversary of the United States. (paragraph 1-5)
Critical information can either be classified or unclassified depending upon the organization, activity, or mission. (paragraph 1-5)
Notify your organizations OPSEC officer and security manager of all OPSEC compromises. (paragraph 4)
All requirements packages must receive two OPSEC reviews by the requiring activity (RA) OPSEC officer. (paragraph 1-7)