Definition
Threat hunting with Splunk is the proactive and iterative search for cyber threats that have evaded existing security defenses. It involves using Splunk's powerful search, reporting, and alerting capabilities to investigate suspicious activities and uncover hidden malicious behavior within an organization's network and systems. This practice is crucial for identifying advanced persistent threats and zero-day exploits before they can cause significant damage. For example, a security analyst might hunt for signs of lateral movement by searching Splunk logs for unusual remote login patterns or unexpected process executions. Unlike automated security alerts which react to known threats, threat hunting is a human driven process that hypothesizes about potential threats and seeks evidence. Understanding threat hunting with Splunk is essential for roles covered by certifications like CompTIA Security+, CySA+, and CISSP.