PPT-Computer Network Security

1 Page 2 Identify the challenges for computer and network security Tenfifteen years ago Firewalls IDS antivirus software OS update were rare Now Virus attacks every day Email scanned for suspicious attachments. Introduction to Computer Security. Books:. An . Inroduction. to Computer Security: The NIST Handbook. Johannes . Buchmann. : Introduction to Cryptography. Douglas Stinson: Cryptography Theory and Practice. Fifth Edition. by William Stallings. Chapter 1. Introduction. The combination of space, time, and strength that must be considered as the basic elements of this theory of defense makes this a fairly complicated matter. Consequently, it is not easy to find a fixed point of departure.. William Stallings, 6. th. Ed. . Chapter 1. Overview. . “The combination of space, time, and strength that must be considered as the basic elements of this theory of defense makes this a fairly complicated matter. Consequently, it is not easy to find a fixed point of departure.”. Dr. Mark Ciampa. Western Kentucky University. 150,000,000. . Number of additional cars that Toyota is recalling for accelerator pedal entrapment. How many hits on Charles Barkley’s . I May Be Wrong But I Doubt It . Professor Sushil Jajodia. Center for Secure Information Systems. jajodia@gmu.edu. http://. csis.gmu.edu/jajodia. . Outline. Problem. Approach. Benefits. Challenges. The Perfect Storm. Network configurations are ever more sophisticated. Protecting Sensitive Information. Objectives. 2. What’s so important?. Universities hold massive quantities of confidential data and are traditionally seen as easy targets for data theft. We must understand the types of data that we hold and related business processes . Dr. X. (Derived from slides by Prof. William . Enck. , NCSU) . Outline. Network Attacks. Command Line Lab. OSI stack. Networking. Fundamentally about transmitting information between two devices . Communication . 6. th. edition . Jim Kurose, Keith Ross. Addison-Wesley. March 2012. A note on the use of these ppt slides:. We. ’. re making these slides freely available to all (faculty, students, readers). They. Spyware and Adware . Spyware . Software that secretly gathers information about users while they browse the Web. Can be used maliciously. Install antivirus or antispyware software. Adware . Form of spyware . A computer system . uses a number of different ways to protect the system:. Your credentials (e.g. username and password). Your authorisation (e.g. . drwxr. -x-r--). Your location (e.g. inside/outside the LAN). you . will learn . about different types of security . threats . and . how to reduce your risk. Also privacy issues that are relevant to security will be discussed.. Test. You get a file attachment in a message, from which of the following people would should you accept it and why?. Computer Security In this section you will learn about different types of security threats and how to reduce your risk. Also privacy issues that are relevant to security will be discussed. Test The characteristics of a network depend upon the type of topology selected for designing that network. There are five basic network topologies. :-. 1) Star Topology. 2) Ring Topology. 3) Bus Topology. Alice . Wiesbaum. Federal Office . for the Safety of Nuclear Waste . Management. , . Germany. International Conference on Nuclear Security: Sustaining and Strengthening Efforts (ICONS 2020. ). xx.02.2020, IAEA Headquarters, Vienna.