Access mechanisms to data on encrypted USB hard drives must be implemented correctly otherwise:

A.
user accounts may be inadvertently locked out.

B.
data on the USB drive could be corrupted.

C.
data on the hard drive will be vulnerable to log analysis.

D.
the security controls on the USB drive can be bypassed.

Explanation:
A common access mechanism to data on encrypted USB hard drives is a password. If a weak password is
used, someone could guess the password and bypass the security controls on the USB drive to access the
data.
Incorrect Answers:
A: Not configuring a password (or other access mechanism) on an encrypted USB hard drive would not
lock out a user account. It would just enable someone to access the data on the hard drive.
B: Not configuring a password (or other access mechanism) on an encrypted USB hard drive would not
corrupt the data. It would just enable someone to access the data on the hard drive.
C: Not configuring a password (or other access mechanism) on an encrypted USB hard drive would not
cause the data on the hard drive will be vulnerable to log analysis. It would just enable someone to access
the data on the hard drive.

http://www.pcadvisor.co.uk/test-centre/pc-peripheral/114492/group-test-top-7-encrypted-harddrives/?pn=2