autonumA penetration tester was able to compromise a web server and move laterally into a Linux web server. The tester now wants to determine the identity of the last user who signed in to the web server.
Which of the following log files will show this activity?
A . /var/log/messages
B . /var/log/last_user
C . /var/log/user_log
D . /var/log/lastlog
Answer: D
Explanation:
The /var/log/lastlog file is a log file that stores information about the last user to sign in to the server. This file stores information such as the username, IP address, and timestamp of the last user to sign in to the server. It can be used by a penetration tester to determine the identity of the last user who signed in to the web server, which can be helpful in identifying the user who may have set up the backdoors and other malicious activities.
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