O-LevelComputer ScienceThe Internet and its uses2210/11 · May/June 2020 · Q710 Marks
Hans has a website selling comic books. Customers can create an account to buy the comic books. Customers enter a username and password to log in to their account.
- (a)(i)Describe how keylogging software can be used to gain unauthorised access to a customer's account.[4]
- (a)(ii)Identify a feature that Hans can add to the website to limit the threat of keylogging software.[1]
- (b)(i)State how customers can check that the personal details they enter into the website will be transmitted securely.[1]
- (b)(ii)Explain how a customer's browser checks that the website is secure.[4]
Mark scheme
Marking points from the official mark scheme (May/June 2020). The mark or mark type is shown in brackets.
- [4] 7(a)(i) Any four from: Keylogger is downloaded without knowledge (by example); Keylogger records key presses; Data is relayed back to third party; Data is analysed // Patterns in data could reveal log-in details ...; details can then be used to log into the account
- [1] 7(a)(ii) Any one from: Use drop-down boxes for password; Two-step verification (by example); Partial password requests; Onscreen / virtual keyboard
- [1] 7(b)(i) Any one from: Look for locked padlock / green padlock; Check for https
- [4] 7(b)(ii) Any four from: requests web server to identify itself // request to view the (SSL) certificate; receives a copy of the (SSL) certificate, sent from the webserver; checks if (SSL) certificate is authentic/trustworthy; sends signal back to webserver that the certificate is authentic/trustworthy
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