Compromise the Website:

• Attackers gain access to an e-commerce site by exploiting vulnerabilities in the web application, third-party plugins, or through stolen admin credentials.

Inject Malicious Code:

• The attackers insert malicious JavaScript code into the site’s checkout page or another relevant page where sensitive data is entered.

Skim Customer Data:

• The malicious script captures data entered by customers, such as payment card numbers, CVVs, expiration dates, names, and addresses.

Exfiltrate Stolen Data:

• The collected data is sent to a server controlled by the attackers, often in real-time as users enter their information.

Monetize Stolen Data:

• Attackers sell the stolen data on the dark web or use it for financial fraud.

Compromise the Website:

Vulnerable E-commerce Platforms: Outdated or unpatched software in platforms like Magento, WooCommerce, or Shopify.

Third-Party Plugins and Libraries: Scripts from third-party services such as analytics, payment processors, or advertising networks can be compromised.

Supply Chain Attacks: Compromising a third-party vendor whose scripts are widely used across multiple websites.

British Airways (2018)

• Hackers injected malicious code into the British Airways website and mobile app, stealing data from over 400,000 customers.

Newegg (2018)

• Magecart attackers compromised the payment page of the online retailer, stealing customer payment data for over a month.

Ticketmaster (2018)

• A third-party chat widget used by Ticketmaster was compromised, allowing attackers to skim customer data.

Regular Software Updates

• Keep your e-commerce platform, plugins, and libraries up to date with the latest security patches.

Content Security Policy (CSP)

• Implement CSP headers to restrict the sources of JavaScript that can run on your site.

Monitoring and Alerts

• Regularly monitor your website for unauthorized changes, especially to JavaScript files and scripts loaded on critical pages.

Code Reviews

• Audit your website’s codebase, including third-party integrations, to ensure no malicious scripts are present.