90% of Your Splunk Data Is Helping Attackers, Not Analysts

This document presents a free Splunk app that analyzes index and sourcetype volumes to identify high-volume data sources and estimate reduction potential using pattern-based insights (e.g., HEC, REST APIs, verbose logs). It provides a visual dashboard for relative volume, optimization opportunities, and before/after projections, operating entirely within the user’s Splunk instance as a diagnostic tool rather than enforcing policy changes. The goal is to help teams reduce noise, lower costs, and preserve security visibility by prioritizing where optimization will have the most impact.