NIST is pleased to announce the release of Special Publication 800-12 Revision 1, An Introduction to Information Security. Information security is a constantly growing and evolving science. This revision, while looking visibly different than the original, still follows the direction established when SP 800-12 was initially published. This publication serves as a starting-point for those new to information security as well as those unfamiliar with NIST information security publications and guidelines. The intent of this special publication is to provide a high-level overview of information security principles, introduce related concepts, and also to broadly discuss the security control families defined in NIST SP 800-53, Security and Privacy Controls for Systems and Organizations.