Concept behind computer security

Every technology for providing the best protection against every kind of online threat is based on logic. Till now no universal standard has been set which can explain the secure behavior of any computer system. The concept of security is very broad, it carries varying definitions in varied situations. The antivirus and Internet security, all follow different approach of maintaining different level of security. Thus various restrictions are put on the behavior of the applications running on any computer system. Because the antivirus engines, are also based on the behavior of the applications. The antivirus and Internet security first analyzes the behavior of the application and then imposes certain level of checks on its behavior. If at any moment of time during the course of the application, if shows any kind of uneven or malicious behavior then it is either blocked or deleted by pre-informing the user about it.

The concept of imposing restrictions on the behavior of the applications is that after the initial installation of any security application, it analyzes and stores the behavior of the program for future reference. The purpose of storing the behavior of the application is to prevent the viruses or other kinds of online threats from altering or modifying the original software application to divert from its authorized functions, what it has been designed to do. If any application is infected by the virus or other types of threats, then it will show uneven behavior and on the basis of the stored knowledge of the actual behavior of the application, it will be concluded that the particular application is infected by the virus, worm, or any other threat.