Dictionary · 44 U.S.C., Sec. 3544

Official responsible for carrying out the Chief Information Officer responsibilities under the Federal Information Security Management Act (FISMA) and serving as the Chief Information Officer’s primary liaison to the agency’s authorizing officials, information system owners, and information system security officers. SP 800-53 Note: Organizations subordinate to federal agencies may use the term Senior Information Security Officer or Chief Information Security Officer to denote individuals filling positions with similar responsibilities to Senior Agency Information Security Officers.