Jscrambler Webpage Integrity is a client-side security and compliance platform that provides visibility and control over third-party scripts and tags running on websites. It enables organizations to monitor, manage, and restrict the behavior of third-party scripts to prevent digital skimming, data leakage, and other client-side attacks. The platform offers a real-time inventory of all scripts executing on a website, detailing how they access and transfer data. Users can define granular policies to limit third-party tag activity to specific pages, restrict their function on sensitive pages such as checkout or login, and specify what data they are permitted to capture. Custom data categories can be created to align with an organization's specific data leakage protection requirements. The product includes a rules engine for proactively or reactively blocking scripts exhibiting malicious behavior, real-time alerting for high-risk script behaviors, and vendor onboarding and vetting workflows. A dedicated PCI DSS v4 module supports compliance with requirements 6.4.3 and 11.6.1 by providing real-time discovery, authorization, and documentation of payment page scripts, along with automated monitoring and alerting for unauthorized modifications. Assessment-ready compliance reports are generated to support audit readiness. The platform is designed to scale for large, high-traffic websites without impacting user experience.