Source Defense is straightforward, simple-to-use client-side data protection and PCI DSS compliance software that closes this ubiquitous gap in digital supply chain security.
Proactive, automated prevention and full-site protection against malicious scripts.
Real-time visibility into third-party and client-side script behavior.
Extend PCI DSS 6.4.3 coverage across merchant portfolios at scale.
A 2-minute walkthrough of Protect and Detect defending a live checkout.
Source Defense combines industry-leading digital skimming solutions with comprehensive client-side data protection in software that’s powerful, yet easy to manage.
We'll map your stack to the right product and compliance path.
Perspectives on digital skimming, Magecart and the browser threat landscape.
In-depth guides on PCI DSS 4.0.1 and client-side compliance.
Live and on-demand sessions with our security research team.
Original findings from our client-side security research lab.
A year of Source Defense Research on how eSkimming evolved in 2025, and what security teams should do next.
Deal registration, margin protection and dedicated partner enablement.
Registered · Silver · Gold · Platinum
10 years engineering focused solely on client-side security.
Meet the team building the category standard.
News, coverage and announcements.
Open roles across engineering, research and go-to-market.
Have questions? Let’s talk about protecting your digital supply chain.
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