Security debt is the backlog item everyone acknowledges and no one prioritizes — until something breaks. The problem isn't awareness; it's ownership. When security lives in a separate silo, its debt becomes invisible to the teams making daily quality trade-offs. This session reframes security debt as a quality conversation, using zero-trust principles as the unifying language that bridges security, QA, development, and product teams. Through storytelling and practical frameworks, we'll show how treating every component, every interaction, and every deployment as "untrusted by default" transforms security debt from a hidden risk into a shared, measurable quality metric — one that the whole team owns together.