Vulnerability Disclosure Policy as a first step of GfK’s crowdsourced security strategy

This customer story discusses how GfK implemented a Vulnerability Disclosure Policy (VDP) with YesWeHack to centralize external security reports, improve researcher engagement, ensure GDPR compliance, and prepare for a future private Bug Bounty program; it focuses on motivations, the setup process, internal stakeholder coordination, and the operational benefits rather than any specific security incident.