Information Technology Security is the documenting of requirements, design, implementation, integration, test, certification, deployment, accreditation, operation, maintenance, repair, and retirement of the security for an Information Technology system.
Information Technology is technology intended to make collection, acquisition, transmission, transformation, presentation, organization, display, storage, retrieval, reception, etc of information easier, faster, and less expensive (or resource intensive).
Availability of Information
Methods and techniques exist to make information available or unavailable. These techniques modify how information is stored, retrieved, displayed, and transmitted. Positive availability of information is the ability to provide access to the information even when there are errors, noise, reduced functionality, low available bandwidth, degraded capacity, and reduced resources. Negative availability of information is the ability to prevent unauthorized subjects from gaining access to information even when exposed and under threat.
Integrity of Information
Methods and techniques exist to check the integrity of information. These techniques augment the information with data describing the information at a given point in time. There are algorithms which create the integrity data and check the current state of the information against the integrity data.