Security Audits Can't Cure Systemic XSS in Legacy Code

This article reveals a critical gap in how organizations approach security: passing an audit creates false confidence without addressing root causes. In legacy systems, XSS isn't an isolated bug but a symptom of systemic architectural flaws—inconsistent validation, scattered responsibilities, and accumulated technical debt. Understanding this distinction is vital because it explains why new vulnerabilities often emerge long after organizations believe they've 'fixed' security issues.