DEFENSIVE NETWORK SECURING PRINCIPLES and DNS SCENARIO 1: You want to access your Maybank account. Since you are in a hurry, you have provided your login user name and password in mäybänk.com instead of the original website, maybank.com. As a consequence, there is a great possibility of your Maybank account being hacked due to Cross-Site Scripting (XSS) attacks and malicious content is delivered to the users. XSS vulnerabilities can potentially lead to large-scale attacks such as stealing users' credentials-cookies, etc. SCENARIO 2: While accessing maybank.com, Domain Name System (DNS) is required for the functioning of mapping a host name and its Internet Protocol (IP) address on the Internet. As shown in Figure 1, when the web page is accessed, there must be a DNS name lookup to determine the IP address of the Web server. DNS is considered as an application layer protocol for mapping domain names to IP addresses. DNS 208.77.188.26 www.maybank.com hetps:/200.10.26 Maybank Maybank Figure 1 (c) Based on Scenario 2, examine the operations that will typically happen when mäybänk.com is accessed by you. Illustrate it with a diagram.

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