for Firefox for Firefox's Firefox add-on allows you to generate a new virtual card number with 1-click on any checkout page. Keep your payment info safe from data breaches, shady merchants, and sneaky subscription billing. for Firefox promo image
What is for Firefox? for Firefox is a browser add-on that allows you to generate virtual card numbers on any checkout page. Protect your payment information from data breaches, shady merchants, and sneaky subscription billing. Take control of your online payments and stay secure with's Firefox add-on.

This add-on was removed from Firefox Browser Add-ons on 2023-08-25
Stats date:
By: Privacy
Users: 10,098
Rating: 4.04 (50)
Version: 1.6.3 (Last updated: 2020-06-25)
Creation date: 2017-06-01
Weekly download count: 129
Firefox on Android: No
Manifest version: 2
  • tabs
  • *://*/*
  • storage
Size: 1.40M
Email: Click to see
Risk impact: High risk impact
Risk likelihood: High risk likelihood

Other platforms

Not available on Chrome
Not available on Edge

Stop exposing your credit or debit card information and protect your online payments from hackers and fraudsters with Privacy. Join over 200,000+ users that have saved millions of dollars by using Privacy to mask your true bank account and card information online, and block unwanted charges and subscriptions.

Download the Privacy add-on to quickly autofill unique, secure card numbers directly into checkout pages where traditional credit and debit cards are accepted. No more needing to get up and fish for your wallet at inconvenient times. No more memorizing a dozen card numbers. Simply use the browser extension and checkout in one click.

With Privacy, you can:

  • Shield your true financial information:

Privacy masks your debit card or bank account number to help protect you from card theft and fraud. Pay with greater privacy and security anytime.

  • Take control of your subscriptions:

Pause and close cards whenever you want, giving you complete control over who can charge your card and when.

  • Create merchant-locked and one-time use cards:
See more
User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Great for using virtual cards on sketchy sites
  • Easy to use flow
  • Prevents unauthorized card usage
  • Ability to add multiple funding accounts
  • Sometimes shows denied for insufficient funds due to balance update issues
  • Popup window is not usable
  • Some users experienced issues with denied payments and unhelpful customer support
  • Unable to scroll in popup window
Most mentioned
  • Prevents unauthorized card usage
  • Popup window is not usable
View all user reviews
Risk impact for Firefox is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install for Firefox if you trust the publisher.

Risk likelihood for Firefox may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

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