Eno From Capital One

Eno from Capital One lets you shop more securely through your desktop browser. Eno appears at checkout and provides a unique virtual card number only for that site, allowing you to shop online without exposing your actual card number.

With Eno, you can lock or unlock your virtual card numbers anytime without affecting your other spending. Each purchase made with a virtual card number will be linked to your credit card account, so you’ll still earn the same benefits and rewards.