Discover Why Traditional Defenses Fall Short Against eSkimming Attacks
Download the Free eBook: Behavior-Based vs CSP and SRI: Which is more effective?

Web-based attacks are evolving, and most organizations aren’t ready. While legacy defenses like Content Security Policy (CSP) and Subresource Integrity (SRI) provide limited, static protection, today’s threats demand a more dynamic response.
This free eBook offers a deep dive into the critical gap in web security that 97% of consumer-facing websites fail to address: protection of third-party scripts in the browser. You’ll learn why behavior-based security is rapidly becoming the new standard for defending against:
AI-generated keyloggers and real-time script manipulation
Actionable steps to assess and close your client-side security gap
PCI DSS 4.0 requirements for payment page script control and monitoring are no longer optional. Traditional tools can’t keep up with evolving attacker tactics—and failing to meet compliance could result in penalties, reputational damage, and lost customer trust.
This guide cuts through the complexity, compares leading approaches, and lays out a fast path to compliance and protection.
As a PCI Participating Organization and the pioneer in eSkimming security, Source Defense played a role in the development of new requirements for web security found in PCI DSS 4.0.
We’ve helped thousands of the world’s leading brands address these issues. We’ve also been educating merchants, QSAs, PSPs, eCommerce Platform providers and virtually every stakeholder in PCI compliance on the vulnerabilities in modern website design that make eSkimming attacks possible. We’ve made it our misison to provide guidance around ambiguity in the standard; advise on the pros and cons of approaches provided by the council and we recently launched a free assessment, monitoring and management solution for both merchants and their QSAs.