1. Although we discussed several sources of security threats, we did not exhaust all. There are many such sources. Name and discuss five 2. We pointed out that the design philosophy of the Internet infrastructure was partly to blame for the weaknesses and hence a source of security threats. Do you think a different philosophy would have been better? Comment on your answer. 3. Give a detailed account of why the three-way handshake is a security threat 4. In the chapter, we gave two examples of how a port scan can be a threat to security. Give three more examples of port scans that can lead to system security compromise. 5. Comment on the rapid growth of the Internet as a contributing factor to the security threat of cyberspace. What is the responsible factor in this growth? Is it people or the number of computers? 6. There seems to have been an increase in the number of reported virus and worm attacks on computer networks. Is this really a sign of an increase, more reporting, or more security aw the part of the individual? Comment on each of these factors. 7. Social engineering has been frequently cited as a source of network security threat. Discuss the different elements within social engineering that contribute to this assertion. 8. In the chapter, we gave just a few of the many motives for security threat. Discuss five more,giving details of why there are motives 9. Outline and discuss the factors that influence threat information quality. 10. Discuss the role of data mining techniques in the quality of threat information. |