Payments
Protect Credit Card Fields in Payments from JavaScript Skimmer
In payments, credit card is one of the most targeted data types. Standard HTML inputs expose it to javascript skimmer attacks. SmartField encrypts it at the keystroke level.
The Risk
Credit Card entered in a standard form is immediately accessible:
// JavaScript Skimmer attack:
document.querySelector('input').value
// "Credit Card data here" ← stolen
The Fix
<smart-field type="password" encrypt-key="/api/sf-key"
placeholder="credit card"></smart-field>
Now the same attack returns AES-256-GCM encrypted data. The credit card never exists as plaintext in the browser.
What the Attacker Gets
document.querySelector('smart-field').value
// "eyJ2IjoxLCJpdiI6IkNxT3..." ← 600+ chars of encrypted gibberish
Useless without your server's RSA-2048 private key.
Compliance
SmartField uses NIST-approved algorithms: AES-256-GCM (SP 800-38D) and RSA-2048 (SP 800-56B). Compatible with PCI-DSS, HIPAA, GDPR, SOX, and FISMA requirements.
Frequently Asked Questions
How does SmartField protect credit card in payments?+
SmartField encrypts credit card at the keystroke level using AES-256-GCM. The data never exists as plaintext in the browser DOM. JavaScript Skimmer Protection is achieved through 13 independent security layers including closed Shadow DOM and WeakMap isolation.
Can javascript skimmer attacks steal credit card?+
Not with SmartField. The .value property returns encrypted payloads only. The real credit card is stored in a WeakMap inside a closed Shadow DOM, invisible to any JavaScript including javascript skimmer attacks.
How do I implement this?+
Replace your standard input with smart-field. 2 lines of HTML. Install the server SDK (Node.js, Python, Java, Go, PHP, or Ruby) to decrypt on your backend.
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