CrowdStrike researchers have documented a multi-part technical disclosure revealing that Microsoft ClickOnce, a legitimate Windows application deployment technology, is being actively abused as a low-friction malware delivery vector. Because ClickOnce requires no administrator privileges, demands minimal user interaction, and includes built-in self-updating capabilities, it offers threat actors a structurally advantageous channel that bypasses many conventional endpoint defenses. This disclosure signals a broader trend of adversaries weaponizing trusted deployment infrastructure, shifting the threat landscape toward abuse of legitimate developer tooling rather than traditional exploitable vulnerabilities.