CIA TRIAD is a main Security concept that you should aware. CIA consist of three terms which are
Confidentiality, Integrity and Availability.
What is Confidentiality ?
Confidentiality concept limits the access an provide the restrictions to be secured while considering the most sensitive information of an individual or organization. in simple term we can explain it is a set of rules that limits access to the information.
What is Integrity ?
Integrity considering the ethical standard with the assurance in order to make sure that the information is trust worthy and accurate also the no one can change the information without verified access to the information.
What is Availability ?
Availability is ensure that the system works properly according to the configurations and service is not denied to the authorized users. basically it is guarantee of reliable access to the information by authorized people.