TY - RPRT TI - Assessing enhanced security requirements for controlled unclassified information AU - Ross, Ron AU - Pillitteri, Victoria AU - Dempsey, Kelley PY - 2022 PB - National Institute of Standards and Technology (U.S.) CY - Gaithersburg, MD SN - NIST SP 800-172A DO - 10.6028/NIST.SP.800-172A ER -