By 
A virtual credit card number is a randomly generated, temporary card number linked to your real account. When you use it for an online purchase, the merchant sees the virtual number — not your actual card number. If that virtual number is stolen in a data breach, it is useless to thieves because it is either single-use or merchant-locked. It is one of the most effective and underused fraud prevention tools available to cardholders in 2026.
How Virtual Card Numbers Work
Your card issuer generates a temporary number (and sometimes a corresponding CVV and expiration date) through their app or website. You use that temporary number to check out online. The charge still posts to your real account. But the number the merchant stores — and that hackers steal in breaches — is the virtual number, not your permanent card details.
Depending on the issuer, virtual card numbers work in one of three ways:
- Single-use: The number works for one transaction and is automatically invalidated after the charge processes
- Merchant-locked: The number can only process charges from the specific merchant you created it for — charges from other merchants are automatically declined
- Time-limited: The number expires after a set period (30 days, 90 days, etc.) regardless of how many times it is used
Which Cards Offer Virtual Card Numbers in 2026
Capital One Eno — Best Implementation
Capital One’s Eno browser extension automatically generates a unique virtual card number for every website where you shop. When you visit a checkout page, Eno offers to create a virtual number specific to that merchant. You can see all your virtual numbers in the Capital One app, track which merchant each is linked to, and instantly lock or delete any virtual number that shows suspicious activity.
Available on: All Capital One personal credit cards including the Venture, Savor, Quicksilver, and secured cards. Free for all cardholders. Works in Chrome, Firefox, and Edge via the Eno extension.
Citi Virtual Account Numbers
Citi offers virtual account numbers through their website for most Citi credit cards including the Citi Double Cash, Citi Custom Cash, and Citi Diamond Preferred. You generate a number on the Citi website before checking out. The virtual number can be set to expire after a specific date or dollar amount limit.
One limitation: Citi’s virtual number system requires logging into the website to generate each number, which is slightly less seamless than Capital One’s browser extension approach.
Apple Pay and Google Pay — Virtual by Default
Any card added to Apple Pay or Google Pay uses a device account number — a unique number that represents your card on that specific device — rather than your actual card number. When you tap to pay at a terminal or check out using Apple Pay online, the merchant never receives your real card number. Each transaction also includes a dynamic security code that changes with every purchase.
This is virtual card protection by default for contactless payments. Adding your cards to Apple Pay or Google Pay is one of the simplest fraud prevention steps available with no additional setup beyond the initial card addition.
Privacy.com — Third-Party Virtual Cards for Any Bank
Privacy.com is a service that generates virtual Visa debit cards you can use at any merchant. You link your checking account or debit card to Privacy, then create virtual cards with merchant locks and spending limits. The free tier allows 12 virtual cards per month. Pro ($10/month) and Premium ($25/month) tiers allow unlimited cards.
Privacy.com is particularly useful for subscriptions you want to control — create a virtual card with a $15/month limit for a streaming service, and the subscription automatically declines if the provider tries to charge more. If you want to cancel and the company makes it difficult, you simply close the virtual card.
Note: Privacy.com generates debit cards, not credit cards, so charges do not earn credit card rewards and do not build credit. The fraud protection benefit is the primary value proposition.
Situations Where Virtual Card Numbers Are Most Useful
Small or unfamiliar online retailers. Large merchants like Amazon and Walmart have sophisticated fraud infrastructure. Smaller or unfamiliar online stores are more likely to have security vulnerabilities. Using a virtual number for any purchase where you are uncertain about the retailer’s security practices limits your exposure.
Free trials that require a credit card. Merchants offering “free trials” sometimes make cancellation intentionally difficult and charge the card on file. A virtual card with a $0 or $1 limit for a free trial prevents any charge from going through if you forget to cancel — the charge simply declines.
Recurring subscriptions you want to control. Merchant-locked virtual cards let you freeze or delete a subscription without calling customer service. The subscription simply stops processing when you lock the card.
International online purchases. Entering your real card number on foreign websites carries higher breach risk in some jurisdictions. Virtual numbers limit exposure to individual transaction amounts.
What Virtual Cards Do Not Protect Against
Virtual card numbers protect against online fraud where your card number is stolen and used remotely. They do not help in these situations:
- In-person card-present fraud (skimming, counterfeit cards) — use contactless/chip for physical transactions
- Account takeover fraud where thieves access your actual account credentials
- Friendly fraud or merchant disputes — those are handled through your card’s chargeback rights regardless of whether a virtual or real number was used
How to Start Using Virtual Card Numbers Today
- If you have a Capital One card: install the Eno extension in your browser and enable it for all checkouts
- If you have a Citi card: bookmark the virtual number generator in your Citi account online
- Add all your cards to Apple Pay or Google Pay for contactless protection on physical purchases
- For subscriptions with difficult cancellation: sign up for Privacy.com’s free tier and route new subscription signups through it
This article is for informational purposes only. Feature availability may change. Verify current virtual card functionality with your card issuer.
