These models are used to maintain security objectives, that is, in simple words, it deals with the maintenance of the CIA Triad. There are 3 main types of classic security models. This model was invented by scientists David Elliot Bell and Leonard. LaPadula, therefore, this model is called the Bell-Lapadula model.
This is used to maintain security confidentiality. In this case, the classification of subjects (users) and objects (files) is organized in a non-discretionary way, with respect to the different levels of secrecy. This model was invented by the scientist Kenneth. Therefore, this model is called the Biba model.
This is used to maintain security integrity. It works exactly the opposite of the Bell-Lapadula model. The Clark-Wilson Model it's to defend integrity.
