Huntress Data Breach Highlights Supply Chain Compromise via Klue Integration

Cybersecurity vendor Huntress was impacted by a data breach originating from Klue, a market intelligence platform that integrates CRM and sales data across business tools. The incident, described as a 'security domino effect,' began with the compromise of a single integration credential and led to the theft of customer data from multiple connected platforms, including Salesforce. Huntress published details of the attack on June 18, 2026, outlining how the breach cascaded through interconnected systems. The attack timeline and technical specifics were documented in Huntress’s writeup, though no CVE IDs or exact numbers of affected records were disclosed. The breach highlights a supply chain compromise affecting downstream organizations reliant on Klue’s integrations.