Which of the following utilities can be used in Linux to view a list of users’ failed authentication
attempts?

A.
badlog

B.
faillog

C.
wronglog

D.
killlog

Explanation:
var/log/faillog – This Linux log fi le contains failed user logins. You’ll find this log useful when
tracking attempts to crack into your system.
/var/log/apport.log This log records application crashes. Sometimes these can reveal attempts to
compromise the system or the presence of a virus or spyware.