WebRTC Skimmer Bypasses CSP to Steal Payment Data from E-Commerce Sites
In March 2026, cybersecurity researchers identified a novel web skimming attack targeting e-commerce platforms. This attack leverages WebRTC data channels to exfiltrate payment information, effectively bypassing traditional security measures such as Content Security Policy (CSP) controls. The skimmer, implemented in JavaScript, establishes a direct, encrypted communication channel with a command-and-control server, facilitating the stealthy transmission of stolen credit card data. This method allows attackers to circumvent standard detection mechanisms, posing a significant threat to online retailers and their customers. The emergence of this WebRTC-based skimming technique underscores the evolving sophistication of cyber threats in the e-commerce sector. As attackers develop more advanced methods to exploit web technologies, it is imperative for organizations to enhance their security protocols and monitoring systems to detect and mitigate such innovative attack vectors.
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