The meaning of term information security is defending information system from illegal disruption, use, access, inspection, alteration, examination and obliteration. There is a relationship between various fields like computer security, information assurance and information and data security. The aim of all is to protect the integrity and confidentiality of data. Though there is a difference between all also but the dissimilarity is very small.

The difference exist in the method employed, areas each focuses upon and mainly the advance towards the theme.

Information Security in Detail

No matter what the data type is (print, electronic etc); it is the main aim of information protection to ensure that the confidentiality and integrity of the data is preserved. It also secures the computer system by seeing to it that all operations are correct.

There are much confidential information in military, government, hospitals, financial institutions and private corporations regarding their products, customers, research, employees and even finances which need to be protected against the competitors and black hat hackers. This information is usually stored on computers and such a security breach could result in bankruptcy and illegal actions.

Evolution of Information Security

The evolution in the field has been enormous over the past few years. There are many people who have taken it up as a career with varied specializations like securing application and database, securing networks, business continuity planning, auditing information systems, digital forensic science etc.

Security Classification

It is very important in data protection to do risk management. It is imperative to define the procedures and value of the information. Thus, information classification requires going through various stages like identifying senior member of the organization, enlargement of organization policy and then classifying the policy under different categories.

The factors that have a big role in security classification is primarily the type of organization in which information security is being carried out. For example in business sector, it is categorized as private, confidential, sensitive and public. In government sector, it is labeled as restricted, unclassified, confidential, sensitive by unclassified, top secret and secret.

It is important to understand these classification criteria by all members of an organization. Also, the security measures and how one should handle each label should be taught to the employees. Moreover, periodic review of the information asset is important to ensure security as far as information of an organization is concerned.