A few weeks ago at a security conference, a demonstration proved how easily the number of a credit card with RFID (Radio Frequency IDentification) technology could be stolen from across a room without touching the actual card:
[Kristin] Paget aimed to indisputably prove what hackers have long known and the payment card industry has repeatedly downplayed and denied: That RFID-enabled credit card data can be easily, cheaply, and undetectably stolen and used for fraudulent transactions. With a Vivotech RFID credit card reader she bought on eBay for $50, Paget wirelessly read a volunteer’s credit card onstage and obtained the card’s number and expiration date, along with the one-time CVV number used by contactless cards to authenticate payments. A second later, she used a $300 card-magnetizing tool to encode that data onto a blank card. And then, with a Square attachment for the iPhone that allows anyone to swipe a card and receive payments, she paid herself $15 of the volunteer’s money with the counterfeit card she’d just created. (Continue reading: Hacker’s Demo Shows How Easily Credit Cards Can Be Read Through Clothes And Wallets).
How do you know if your credit or debit card is using RFID? A common sign is when the card says “Paypass,” “Blink,” or has a wireless signal icon on the back.
What can you do to prevent your credit card from being read wirelessly? Here are a few options:
- Carry only cards that do not have this RFID technology. You can talk to your bank or card issuer to ask for one without RFID.
- Leave your important credit cards (such as those you use to pay bills online) safe at home, so that if your card number is stolen, you’ll have less hassle to deal with adjusting recurring payments.
- Get a RFID blocking sleeve or wallet. (Available for purchase on Amazon here). This will come especially handy when traveling. You can achieve a similar protection here by wrapping your cards in foil, but this isn’t a very convenient solution for most people.
Note: Passports are vulnerable to this exploit as well, at least passports that use RFID technology.
Here’s a news clip from last year where a similar device was used to demonstrate stealing a credit/debit card number from a victim, transfer the card information to a hotel room key, and then use the key to make a purchase with no questions asked: