Information Security

In today world which information is transferring using cable and satellite, it has become very convenient for us to transfer or send information to the other end of the world. Email message can just be send within seconds but how is the data been transfer? In the other end who is reading the message? Can other people steal the information in the middle of the transfer? Will the message reach the other end? This entire question is concern about Information Security.

What is information security? Information security ensures that digital document which is typically processed by a computer and stored on removable devices such as CD or DVD is well protected, Transmitting Information that transfer over the network such as LAN or the internet is secure.

Information has value and the value of the information come from its characteristics. The three characteristic of information which must be protected are Confidentiality, integrity and availability. Confidentiality refers to the documents or information will only can view by authorized personnel. Integrity ensures that the information is correct and has not been alter by unauthorized person. Availability ensures that data is available for access or download whenever an authorized person needs to retrieve them.