Which of the following tools is less likely to be used by a hacker?

A.
I0phtcrack

B.
Tripwire

C.
Crack

D.
John the Ripper

Explanation:
Tripwire is a tool that checks to see what has changed on your system. The
program monitors key attributes of files that should not change, including binary signature, size,
expected change of size, etc. The hard part is doing it the right way, balancing security,
maintenance, and functionality. This tool is not usually used by hackers to attack, its usually used
to defend against hackers attacks. L0phtcrack is a hacker utility to get passwords, Crack and John
the Ripper are also password crackers.