Build an Anti-Skimming Detection System for E-Payments
Create a browser-based monitoring tool or backend scanner that detects card skimming attempts in e-commerce platforms by analyzing DOM changes, malicious scripts, and form behavior.Digital skimming, or Magecart-style attacks, silently steal card information from payment forms by injecting malicious JavaScript into web pages. These attacks often go unnoticed. An anti-skimming system can detect anomalies and alert site owners before damage is done.
This system monitors the e-commerce checkout page in real time or on scheduled scans. It flags unexpected script injections, form field changes, new input listeners, or data exfiltration endpoints that indicate card data theft activity.
DOM Mutation Monitoring
Detect unauthorized script injections or modified input fields on sensitive pages.
JavaScript Source Verification
Compare loaded scripts against a whitelist of known trusted sources.
Suspicious Network Request Detection
Monitor outbound POST requests from forms and flag unknown endpoints.
Skimming Alert System
Send instant alerts via email, Slack, or webhook when skimming behavior is detected.
The tool scans or embeds JavaScript on the checkout page to monitor changes in real time. When an unauthorized script is added or a new field captures sensitive data unexpectedly, it logs the action and sends alerts. Scheduled backend crawlers can also analyze deployed HTML for known malicious patterns.
- Integrate client-side scanner on checkout or payment pages.
- Track script loading, DOM changes, and new network calls.
- Flag differences from expected HTML structure or known good script sources.
- Send alerts for possible Magecart-style or keylogger activities.
- Optionally block risky actions or remove injected scripts in real time.
Frontend Script Monitoring
JavaScript MutationObserver API, Service Workers, or Chrome Extensions for runtime monitoring.
Backend Scanning
Python with BeautifulSoup or Puppeteer for crawling and comparing site DOM structures.
Alerting & Logging
Flask/Django backend for logs, plus Twilio, Slack, or email alerts via SMTP/webhooks.
Optional Response Module
Auto-remove or replace malicious scripts using Content Security Policy (CSP) and sandboxing.
1. Monitor Script Behavior on Checkout Page
Use MutationObserver to detect new scripts or altered forms in real time.
2. Track and Whitelist Trusted Sources
Create a list of safe script/CDN URLs and flag all unrecognized ones.
3. Capture Outbound Requests
Use event listeners or browser APIs to detect card data being sent to third-party servers.
4. Implement Alert System
Send alerts with full payload info and browser metadata on potential skimming events.
5. Add Admin Dashboard (Optional)
Provide a UI for monitoring threats, managing whitelists, and viewing scan history.
Guard Your Payments Against Silent Theft
Build a lightweight, intelligent tool to protect your e-commerce platform from digital skimming — before customer data is compromised.
Let's Ace Your Assignments Together!
Whether it's Machine Learning, Data Science, or Web Development, Collexa is here to support your academic journey.
"Collexa transformed my academic experience with their expert support and guidance."
Alfred M. Motsinger
Computer Science Student
Get a Free Consultation
Reach out to us for personalized academic assistance and take the next step towards success.