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Information security is the practice of protecting information by mitigating information risks. It is part of information risk management. [1] It typically involves preventing or reducing the probability of unauthorized or inappropriate access to data or the unlawful use, disclosure, disruption, deletion, corruption, modification, inspection, recording, or devaluation of information.
The Protection of Information in Computer Systems is a 1975 seminal publication by Jerome Saltzer and Michael Schroeder about information security. [ 1 ] [ 2 ] The paper emphasized that the primary concern of security measures should be the information on computers and not the computers itself.
Information assurance (IA) is the practice of assuring information and managing risks related to the use, processing, storage, and transmission of information. Information assurance includes protection of the integrity , availability, authenticity, non-repudiation and confidentiality of user data. [ 1 ]
A cryptosystem is considered to have information-theoretic security (also called unconditional security [1]) if the system is secure against adversaries with unlimited computing resources and time. In contrast, a system which depends on the computational cost of cryptanalysis to be secure (and thus can be broken by an attack with unlimited ...
Data integrity is the opposite of data corruption. [4] The overall intent of any data integrity technique is the same: ensure data is recorded exactly as intended (such as a database correctly rejecting mutually exclusive possibilities). Moreover, upon later retrieval, ensure the data is the same as when it was originally recorded. In short ...
Internet security is a branch of computer security. It encompasses the Internet, browser security, web site security, [1] and network security as it applies to other applications or operating systems as a whole. Its objective is to establish rules and measures to use against attacks over the Internet. [2]
Sensitive Security Information (SSI) is a category of sensitive but unclassified information under the United States government's information sharing and control rules, often used by TSA and CBP. SSI is information obtained in the conduct of security activities whose public disclosure would, in the judgment of specified government agencies ...
A security referent is the focus of a security policy or discourse; for example, a referent may be a potential beneficiary (or victim) of a security policy or system. Security referents may be persons or social groups, objects, institutions, ecosystems, or any other phenomenon vulnerable to unwanted change by the forces of its environment. [ 3 ]