![]() For the purpose of this cheat sheet, we will break them down into categories in the following rows. These logs cover everything from system logs to security logs to application and service logs. This location is the storage point for the Windows event logs. ![]() System logs designed to record security events for incident investigation Scheduled tasks (optimal for identifying persistence) Security-related events such as user logins, root user activity and PAM output var/log/secure(debian /var/log/auth.log) Stores all global system activity data, including startup messages var/log/messages(debian /var/log/syslog) Keep this list handy, especially if your SOC’s maturity level needs a little boost! LINUX LOGS This will allow your security operations team to know which log files are critical for activities such as monitoring, auditing, analysis, threat hunting, and overall security program improvement. That is why Google Cloud Technical Solutions Engineer Ivan Ninichuck compiled the below cheat sheet of go-to Windows and Linux logs and and mapped them to key tactics and techniques of the MITRE ATT&CK framework. Knowing which events are indicative of something major and worthy of further investigation, like a security breach, isn’t always self-evident. That’s because your logs are likely capturing huge volumes of data. But it is not always easy for teams to know where they should be looking. Here is where Linux and Windows event logs come in, providing that essential observability into the goings-on across your organization’s network and digital footprint. Being aware of the details of users, assets, known threats, and specific vulnerabilities present across security, network, server, application and database sources allows security operations teams to act quickly and decisively to address possible risks. Within the security operations center, visibility is everything.
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