Malicious programs are designed to harm computers. This error could allow a hacker to change a variable's value without the user knowing, from address X to Y. For example, a pop-up that changes a "no" click to a "yes" click, installing malicious programs or taking the user to a malicious site without their consent. The program calling a file other than expected can develop malicious programs by performing unauthorized actions and accessing private information without the user's knowledge or control.

1. HSC Solution 2007 Q22diii

5. Sample 1 iii- Malicious programs are any computer software that are designed to harm your copmuter in anyway. this error could be used by a hacker to change the value of a variable in a program without the user knowing, as the address is changed from X to Y, then this could harm your system. A example would be a interent pop up that when you click no (which directs you to Address X) or the close button, it changes your click to so that it says you clicked yes (which links to Address Y) and installs a malicious programs or take you to a malicious site.

6. Sample Response 2 Within this scenario the program calls a file other than one the user expected and is thereby causing an actions within the software and the computer that the user is not expecting and has not actually authorised. This can be used in the development of malicious programs as it allows the software program to perform an action that the user has not intended to occur and has not actually been authorised which can be potentially harmful to the computer. Even if this is not the program intention it still poses a significant threat. The program could also call information that it is not intended to know and access private user information as well as controlling other parts of the computer without the users knowledge. In a widespread situation this may be a significant problem for many users.