CIA Triad (confidentiality, integrity, and availability)

Security depends on three major factor's they are,

• Confidentiality 
• Integrity
• Availability

   

Confidentiality: Confidentiality is defined as when we send any messages from one to other system or server the data or message which we are sending should be confidential.In simple words it should not be in simple or plain text it's should be Encrypted. 

Pic Source:Wikimedia.org

Integrity:Integrity is defined as when we send any message from  one to other System  or server the data should not be modified or changed,for this we use hashing function and make sure that the message ate not modified.

Pic Source:Wikimedia.org  

Availability:Availability is defined as when we send any message from one to other system or server the data or network should be available to it's authenticated users.