Episode 24 — Decide what to log and why: events that power detection and investigations

This episode teaches log strategy from first principles so you can answer exam questions about visibility, detection, and investigation readiness. You’ll define logging as the capture of security-relevant events with enough context to support alerting, triage, and incident reconstruction, and you’ll learn how to decide what is “security-relevant” based on threat models and control objectives. We’ll cover high-value event categories such as authentication outcomes, privilege changes, configuration modifications, process execution, network connections, and data access to sensitive repositories, along with the practical metadata that makes events useful, like user identity, host identity, timestamps, and request source. Real-world scenarios include investigating an account takeover where you need sign-in logs and session context, and diagnosing suspicious admin activity where change logs and command traces matter more than generic syslog noise. Troubleshooting covers overcollection that drives cost without outcomes, undercollection that blocks investigations, and the exam trap of treating logging as compliance-only instead of operational security capability. Produced by BareMetalCyber.com, where you’ll find more cyber audio courses, books, and information to strengthen your educational path. Also, if you want to stay up to date with the latest news, visit DailyCyber.News for a newsletter you can use, and a daily podcast you can commute with.