$\backslash ((40\backslash \%)\backslash )$ Comparing with one$-$factor authentication, two$-$factor authentication provides more protection to the user identity in online services. Please compare three different types of currently available techniques for second factor with regarding to $($a$)$ Password cracking $($b$)$ Eavesdropping $($c$)$ Loss of second factor d$)$ Trojan horse or Key logging e$)$ Men$-$in$-$the$-$Middle prevention$(15\%)$ As part of a formal risk assessment of information systems in a

small accounting firm with limited IT support, you have identified the

assets "database and its backup systems" and "integrity of customer and

financial data report files on desktop systems." And the threats

"synchronization of database and its backup" and "corruption of these files

due to import of a worm$/$virus onto system." Suggest reasonable values for

the items in the risk register shown in Table $14\mathrm{.}5$ for this asset and threat,

and provide justifications for your choices.