Computer Science · May / June 2016 · Paper 11 · Question 8
2210
As printed in the paper
The question as text
A bank offers an online service to its customers. The bank has developed a “SafeToUse” system that asks each customer to enter four randomly chosen characters from their password each time they log in. The customer selects these four characters from drop-down boxes. For example: Please select the 2nd character 5th character 6th character 8th character
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
8(a)(i)[2]
Any two from:
– to protect against key logging software/spyware – can stop key presses being recorded – can stop key presses being relayed – drop down boxes cannot be recorded as key presses – drop down boxes can be placed in different location on the screen each time (to overcome screen capture issues) [2]
8(a)(ii)[1]
Any one from:
– hacker never finds all characters on the first hack – makes it more difficult for hackers to find the order of the characters – hacker needs to hack the system several times to gain the whole password – shoulder surfing will not give person full password [1]
8(b)[2]
Any two from:
– fingerprint scanner – face recognition software – retina scanner/iris scanner – voice recognition software [2]
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