Eno® from Capital One®

Shop more securely through your desktop browser with Eno®, your Capital One® assistant.

Eno® from Capital One®: Your Secure Shopping Assistant

Eno® from Capital One® is an advanced Firefox add-on designed to enhance online shopping security. It provides unique virtual credit card numbers at checkouts, preventing your actual credit card information from being exposed. Additional features like the ability to lock or unlock virtual card numbers, automatic updates even with a new actual credit card and seamless rewards earning make Eno a comprehensive shopping assistant.

Add-on stats

Daily users: 26,012
258
Version: 4.4.0 (Last updated: 2024-04-10)
Creation date: 2018-02-23
Weekly download count: 148
Firefox on Android: No
Risk impact: High risk impact
Risk likelihood:
Manifest version: 2
Permissions:
  • activeTab
  • tabs
  • storage
  • cookies
  • webRequest
  • webRequestBlocking
  • alarms
  • https://*.capitalone.com/*
  • http://*.capitalone.com/*
Size: 5.60M

Other platforms

Eno® from Capital One® (v5.1.1)
4.56 (6,496) 700,000
Not available on Android
Eno® from Capital One® (v5.1.0)
2.20 (97) 43,206
Want to check extension ranking and stats more quickly for other Firefox add-ons? Install Chrome-Stats extension to view Firefox-Stats data as you browse the Firefox Browser Add-ons.

Add-on summary

KEEP YOUR CREDIT CARD NUMBER TO YOURSELF Eno appears at checkout and provides a unique virtual card number only for that site, allowing you to shop online without exposing your actual credit card number.

STEER CLEAR OF UNWANTED CHARGES Enjoy greater control over your online shopping experience. With Eno, you can lock or unlock your virtual card numbers anytime without affecting your other spending.

SET IT AND FORGET IT Virtual card numbers keep working even if you get a new credit card, so you won't need to manually update your card information on the sites where you've stored one. Eno will handle it behind the scenes, automatically.

CHECK OUT EFFORTLESSLY AND KEEP EARNING REWARDS Each purchase made with a virtual card number will be linked to your actual credit card account, so you’ll still earn the same benefits and rewards. To get started, add Eno to Firefox (it's free), and just click the Eno icon when you're ready to pay.

Eno is only available for Capital One cardholders. Not a customer yet? Click here to apply for one of our credit cards.

See more

User reviews

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.
Pros
  • Easy to create virtual cards for specific merchants
  • Helps protect real credit card information from fraud
  • Functional and useful when it works properly
  • Allows setting a purchase limit for virtual cards
Cons
  • Frequent login issues and bugs resulting in app malfunctions
  • Sometimes fails to create virtual cards or gets stuck during operation
  • Data collection concerns regarding the extension's usage
  • Occasional issues with the auto-paste feature due to website design
Most mentioned
  • Works effectively when it functions properly
  • Has significant login and functionality issues
  • Provides security for online transactions by using virtual cards
  • Users have to frequently log in, even after short durations
User reviews
Eno takes a lot of the anxiety out of providing credit information to online sales sites. It works on many sites but definitely not all. Sometimes it will not recognize the form fields. Also some websites seem to detect the extension and reject the Eno card number forcing the user back to the underlying card number. Overall it is a very good and handy extension that I use to increase security whenever it is available.
by jh, 2025-02-05

The extension itself is sometimes a little buggy, it'll get stuck and never get you a card, but it works 90% of the time and the other 10% I'll just log into the capital one website and do it myself
by matt, 2025-01-31

LOVE IT... L-O-V-E IT
by matt, 2025-01-24
View all user reviews

Add-on safety

Risk impact

Eno® from Capital One® requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
  • Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
  • Low ******* ****** ** *** ********* ******** **************
Risk likelihood

Eno® from Capital One® is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Medium **** ********* *** *** **** *******
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Upgrade to see full risk analysis details