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A security model may be founded upon a formal model of access rights, a model of computation, a model of distributed computing, or no particular theoretical grounding at all. A computer security model is implemented through a computer security policy. For a more complete list of available articles on specific security models, see Category ...
Transmission security (TRANSEC) is the component of communications security that results from the application of measures designed to protect transmissions from interception and exploitation by means other than cryptanalysis. Goals of transmission security include:
In computer science, secure transmission refers to the transfer of data such as confidential or proprietary information over a secure channel. Many secure transmission methods require a type of encryption. The most common email encryption is called PKI. In order to open the encrypted file, an exchange of key is done.
Multilevel security or multiple levels of security (MLS) is the application of a computer system to process information with incompatible classifications (i.e., at different security levels), permit access by users with different security clearances and needs-to-know, and prevent users from obtaining access to information for which they lack authorization.
Integrity protection mechanisms such as MACs and digital signatures must be applied to the ciphertext when it is first created, typically on the same device used to compose the message, to protect a message end-to-end along its full transmission path; otherwise, any node between the sender and the encryption agent could potentially tamper with it.
This security model, created in 1991 by John McCumber, is depicted as a three-dimensional Rubik's Cube-like grid. The concept of this model is that, in developing information assurance systems, organizations must consider the interconnectedness of all the different factors that impact them.
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 discipline dealing with security over a network is called Network security. [11] The X.800 Recommendation: [1] provides a general description of security services and related mechanisms, which may be provided by the Reference Model; and; defines the positions within the Reference Model where the services and mechanisms may be provided.