Client-Side Website Security, Solved.
Protect websites, payment pages, and sensitive customer data from leaks, digital skimming, and third-party JavaScript vulnerabilities with the industry’s most trusted client-side security platform.
Easily comply with PCI DSS digital skimming requirements working with a trusted member of the PCI Board of Advisors.
Proudly partnering with Mastercard
to eradicate digital skimming across the world
Trusted by Leading Global Brands
Traditional Security Stops at the Browser
Modern websites depend on third-party scripts and JavaScript to power digital experiences – but every script introduces potential risk. Client-side attacks and digital skimming bypass traditional security tools, targeting data at the point of capture and exposing organizations to data theft, compliance issues, and reputational damage.
Source Defense helps organizations detect and prevent client-side threats in real time.
Prevent digital skimming and Magecart attacks
Easily comply with PCI DSS 4.0.1 requirements
Secure third-party JavaScript dependencies
Detect unauthorized client-side activity
Protect customer trust across every transaction
Complete Client-Side Protection for Modern Websites
Source Defense Protect
Automated prevention and full-site protection.
- Real-time threat prevention
- Payment page and full website protection
- Automated policy enforcement
- Third-party script governance
- Push button compliance for PCI DSS 4.0.1
Source Defense Detect
Threat visibility and monitoring.
Continuously monitor and detect client-side threats, vulnerabilities, and unauthorized behavior across digital properties.
- Continuous monitoring
- Threat detection and alerting
- JavaScript inventory management
- Risk scoring and analysis
- Fast, lightweight deployment
Why Source Defense?
We Created the Category
As pioneers in client-side security and eSkimming prevention, we’ve helped define the standards organizations rely on today.
Built for Enterprise Scale
Trusted by Fortune 500 organizations and global commerce leaders operating complex digital ecosystems.
Compliance-Driven Security
Actively influencing PCI DSS standards and helping organizations simplify client-side compliance requirements.
Patented Protection Technology
Our patented architecture delivers advanced browser-side protection unavailable through traditional security tools.
Operationally Simple
Deploy quickly and manage with minimal overhead —- often requiring less than two hours per month of administration.
Proven Industry Leadership
Protecting the backbone of eCommerce across the world with deep relationships across card brands, payment providers, auditors, merchants, and global security partners.
Purpose-Built for High-Risk Digital Environments
Source Defense helps organizations across highly regulated and transaction-heavy industries protect customer data, reduce compliance exposure, and strengthen digital trust.
Industry Applications
Retail & eCommerce
Protect payment pages and customer checkout experiences from digital skimming and browser-based attacks. Easily comply with PCI DSS 4.0.1.
Financial Services
Reduce client-side risk and secure sensitive financial data across online banking and customer portals.
Healthcare
Protect patient information and support HIPAA-focused data privacy initiatives.
Hospitality & Travel
Secure reservation systems, loyalty programs, and digital transactions across distributed online environments.
Telecommunications & Media
Protect high-volume customer interactions and sensitive user data across digital platforms.Simplify PCI DSS 4.0.1 Compliance
PCI DSS requirements mandate client-side security, script management, and payment page protection. Source Defense helps organizations address evolving compliance mandates while reducing operational burden and improving security posture.
- PCI DSS 4.0.1
- eSkimming Prevention
- HIPAA Data Protection
- GDPR Readiness
- FFIEC Initiatives
Trusted by Industry Leaders
Source Defense works with leading QSAs, Resellers, MSSPs and alliance partners to deliver stronger outcomes for customers who are focused on client-side security and compliance.
Protect Every Online Transaction with Confidence
Secure your website, reduce client-side risk, and protect customer trust with the industry leader in eSkimming prevention and client-side security.
Insights from the Front Lines of Client-Side Security
Explore expert research, compliance guidance, and actionable resources designed to help organizations understand and mitigate modern browser-based threats.
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