Shopping Cart Monitor by SecurityMetrics is an agentless solution designed to detect potential ecommerce skimming and help comply with PCI DSS v4.0 requirements 6.4.3 and 11.6.1. It utilizes patented Webpage Integrity Monitoring (WIM) Technology to enhance security by preventing subversion. Shopping Cart Monitor operates without requiring software installation, integration, or website configurations, making it a non-intrusive solution that doesn't involve the web development team. It creates a snapshot of the checkout process and behaviors involved on the page, inventories JavaScript, and detects changes on payment pages.