1. NS-intrduction.pdf - Data and Network Security M Abidoon...

This preview shows page 1 - 6 out of 14 pages.

Data and Network Security M. Abidoon Qadir
Image of page 1

Subscribe to view the full document.

Book Network Security Essentials, Applications and Standards. 3/E, Prentice Hall. ISBN: 0-13- 238033. Author: Stallings, W.
Image of page 2
Security Security is not a new concept Quotes from “The Art of War” – “ The art of war teaches us to rely not on the likelihood of the enemy's not coming, but on our own readiness to receive him; not on the chance of his not attacking, but rather on the fact that we have made our position unassailable.” Victorious warriors win first and then go to war, while defeated warriors go to war first and then seek to win. Sun Wu
Image of page 3

Subscribe to view the full document.

History ENIGMA: The most sophisticated encoding machine of its time. Used during World War II by the Germans. Intercepting and decoding German transmissions would prove to be a turning point in the war
Image of page 4
What is SECURITY ??? 1. Measures taken to guard against sabotage, crime or attack 2. The protection of data against unauthorised access The only truly secure system is one that is powered off and even then I have my doubts .” Computer Recreations of Worms, Viruses and Core War by A. K. Dewdney In simple words: Security is a degree of protection against danger, damage, loss and criminal activities
Image of page 5

Subscribe to view the full document.

Shane Stephen’s definition of Hackers Group A: People who attempt to gain illegal access to
Image of page 6
You've reached the end of this preview.
  • Summer '17
  • mubassar

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern