The /var/log/wtmp file in Linux systems is used to record all logins and logouts. The wtmp file is a binary file that can be read with tools like last, which can display the login history of all users or a specific user, as well as the times of system reboots and shutdowns. SOC analysts, like Chloe, would inspect this file to track user activities and investigate potential unauthorized access or other security incidents.
References: The EC-Council’s Certified SOC Analyst (CSA) course provides extensive training and knowledge on SOC operations, including log management and correlation. The CSA certification emphasizes the importance of understanding various log files and their purposes within a Linux system as part of the SOC analyst’s role12. For more detailed information, the EC-Council’s official CSA study guides and resources should be consulted.
[Reference: https://stackify.com/linux-logs/, ]
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