Stop Magecart Attacks
Prevent credit card skimming and formjacking on your site by controlling all scripts that touch your checkout flow. Compatible with Magento, Shopify, or internally built checkout pages.
What Happens In a Magecart Attack
Malicious scripts steal customer payment data while avoiding detection.
Even a single incident can lead to non-compliance, penalties, and forced forensic audits by your payment processor.
Monitor and block malicious script behavior in real time.
Leading companies trust cside
Built for security teams who need visibility inside the browser, cside defends against modern client-side attacks while supporting PCI DSS and GDPR compliance. We help you secure the last mile of the web.
GDPR 
SOC 2 
PCI DSS FAQ
Frequently Asked Questions
Yes. While the term 'Magecart' originated from attacks on Magento stores, it now refers to any client-side skimming regardless of your stack. Whether you're using Shopify, custom checkout flows, React, or any other frontend, the risk is the same.
Cside is compatible with any web application or website. While eCommerce businesses use us for PCI DSS and skimming protection, we can also protect SaaS apps, fintech platforms, job boards, healthcare portals, and more. If your business handles sensitive data, then cside is also for you.
No. Cside loads asynchronously and is optimized for production environments. It wraps script execution without introducing latency or blocking rendering. We cache static scripts to even improve performance.
We apply behavioral analysis to every script running in the browser. If a script attempts to read sensitive input fields (like credit card numbers), access form data, or send it to an unknown or unapproved domain, cside blocks it instantly and alerts your team.
Eliminate your Client-side blindspot
Gain full visibility and control over every script delivered to your users to improve site security and performance.Start free, or try Business with a 14-day trial.
