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Magecart Skimming Attacks

9 min read Threat Deep Dives

Magecart attacks inject malicious JavaScript into e-commerce checkout pages to steal payment card data from customers.

What is Magecart?

Magecart is a consortium of threat groups that specialize in digital payment card skimming through JavaScript injection.

Attack Process

  1. Compromise - Attackers gain access via vulnerable third-party scripts or direct site compromise.
  2. Inject - Malicious JavaScript is injected into checkout pages.
  3. Exfiltrate - Card data is sent to attacker-controlled servers.

Protection Measures

  • Subresource Integrity - Validate third-party script integrity.
  • Content Security Policy - Restrict script sources and connections.
  • Regular Monitoring - Scan checkout pages for unauthorized changes.

Conclusion

Magecart attacks represent a significant threat to e-commerce businesses. By implementing Subresource Integrity, Content Security Policy, and regular monitoring, you can protect your customers' payment data from skimming attacks.

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