Source Defense

Source Defense completely revolutionized the Client-Side Protection market by aggressively rejecting the standard "Monitoring and Alerting" model. Most security tools warn you *after* a script does something bad. Source Defense built a terrifyingly strict, mathematically rigid "Prevention-First" architecture that physically forces third-party scripts into isolated sandboxes before they even execute. Its signature feature is "Virtual Client-Side Sandboxing." An e-commerce site installs Source Defense. When a user loads the checkout page, Source Defense intercepts the 30 marketing and analytics scripts. It builds a microscopic, isolated "Virtual Page" for each individual script. The script *thinks* it is on the checkout page, but it is actually trapped in a sandbox. Because of this sandbox, it is impossible for a compromised marketing script to steal a credit card. Source Defense physically denies the script access to the actual "Credit Card Number" input field on the real page. It mathematically guarantees that even if a hacker completely takes over a third-party vendor, they cannot execute a Magecart attack, providing absolute PCI-DSS compliance for massive retailers.