Operating System, Application and Software Attack in Cyber Security

What is Operating System, Application and Software Attack in Cyber Security?

Virus:

A piece of code that reproduces itself but it required user authentication to propagate in system is called virus.

Target sector of virus are.

1    1-    exe file

2    2-   boot sector

3    3-   micros (documents)

4    4-  Script (website)

Worms:

A piece of code that self executable itself over the network but it not require any authentication from user side is called worm.

Target area:

1-    email

2-     shared system

3-    network devices

4-     DNS table

5-     routing table

Infection:

      ·        Buffer overflow

     ·        Configuration error

     ·        Network unreachable error

Backdoor:

Backdoor is a program written by some back hot hacker to access the system without any permission that performs two main activities?

        1-    keyword sniffing:
keyword sniffing means record the all keyword activity of user what user type

 2-Displays Spying:
display spying means record the monitor or screen of user what user watch or do.