Introduction
Introduction

Information security is not just about stopping viruses, keeping hackers out and putting a lid on spam email. Information security is also about working with employees and management to make sure that everyone is aware of current threats and how they can protect their information and systems. The terms information security, computer security and network security are frequently used interchangeably. These fields are interrelated often and share the common goals of protecting the confidentiality, integrity and availability of information; however, there are some subtle differences between them.

Information security means protecting information and information systems from unauthorized access, use, disclosure, disruption, modification, perusal, inspection, recording or destruction.

Computer security is the generic name for the collection of tools designed to protect the processed and stored data and to thwart hackers.

Network security is the generic name for the collection of tools designed to protect data during their transmission.

In connection with the Internet, the term internet security is often used. Moreover, this term involves the concept of perimetric security which is the generic name for the collection of tools designed to protect the resources of a private network from users from other networks.

The differences among information security, computer security and network security lie primarily in the approach to the subject, the methodologies used and the areas of concentration. Information security is concerned with the confidentiality, integrity and availability of data regardless of the form the data may take: electronic, print, or other forms. Computer security can focus on ensuring the availability and correct operation of a computer system without concern for the information stored or processed by the computer. Network security focuses on protecting data during their transmission.