Chris: Geek Guy

Quidco is a cashback site which you can use to earn rewards for shopping at your favourite sites. You can also earn cashback without spending any money, simply by signing up for free trials of services such as CreditExpert, or by switching your utility or insurance providers.

Since I joined a little over three years ago, I’ve managed to amass a cool £1300 in cashback, so it’s definitely worth doing. By way of a membership fee, the first £5 you earn per year is retained by Quidco, but after this you get 100% of the proceeds.

There are a few notable omissions such as Amazon, but most of the big retailers appear on Quidco, typically offering anything up to 10% cashback. Some of my favourites are Play.com, Tesco, Debenhams, Argos, eBay and iTunes. They’ve also started a in-store cashback programme including retailers such as Halfords and Cineworld.

Plus if you sign up via any of the links in this post, you will earn £1.25 just for joining. I’ll also get £1.25 for introducing you. Once you’ve joined you can also earn up to £2.50 for each friend you introduce.

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When I saw today’s The Register article, “Argos buries unencrypted credit card data in email receipts“, I immediately logged into my Gmail account to see if I had been affected.

It didn’t take me long to find an email receipt from an order placed in April 2009, and was able to see the problem first-hand.

Near the bottom of the email is the wording “We take security of your details seriously. We may send you emails from time to time, but we would never send an email asking for your log on or card details. See online security for further information.” The underlined words point to a page on argos.co.uk via an URL of some 1600 characters – ironically, this is where the problem lies:

http://www.argos.co.uk/webapp/wcs/stores/servlet/ArgosStatic
PageSecondLevel?includeName=Security.htm&langId=-1&storeId=1
0001&catalogId=1500001501&returnToURL=PlaceOrderProgressView
?storeId=10001&cardnumber=****************&houseNumber=*&val
idationno=***&readtsandcs=on&availableDeliveryOrder=********
**&LockDelAddressAsBillAddress=false&startmonth=&paymentAddr
essId=*********&javascriptEnabled=true&contactAddressId=****
*****&orderId=**********&creditPlanId=&unavailableDeliveryOr
der=**********&delcity=RUGBY&SCSNum=03&com.ibm.commerce.cont
ext.experiment.ExperimentContext=com.ibm.commerce.context.ex
perimentimpl.ExperimentContextImpl@63656e2a&switchno=&emailT
ype=HTML&vatReq=N&voucherCode=&catalogId=1500001501&creditPl
anShortText=&address2=&address1=**********&delpostcode=*****
**&cardtype=VISAD&FFM2011461168=5&POnumber=&deliveryAddressI
d=*********&langId=-1&startyear=&eccvValidated=Y&paymentName
=MR C BARNES&delHouseNo=&addressId=*********&delcounty=Warwi
ckshire&fromView=DeliveryOnlyPaymentInfo&SECURE_ACTION_RESUL
T=7&postcode=*******&SECURE_ACCEPT_CARD=Y&country=United Kin
gdom&town=RUGBY&endyear=****&isInstantCredit=false&endmonth=
**&issueNo=&nor=0&foundValidBinCardType=valid&address=******
********************&instantCreditOtherCard=true&instantCred
itOrder=N&county=Warwickshire&jspStoreDir=argos&delPostcode=
&continue.y=15&continue.x=108&cardholder=***********&argosIm
pl=1&deladdress2=****************

Obviously I’ve redacted my personal details, but the actual text contains my full unencrypted card number, CVV code, expiry date, name as printed on the card and address – basically all the information needed for an identity theft attack. Not only was the information transmitted in clear-text when the email was sent, but the link provided is a standard insecure HTTP link which, if I were to click it, would once again transmit the information in the clear.

A PC Pro story on the same subject credits the find to reader Tony Graham, whose credit card details had been used fraudulently. While there’s no evidence to link this incident to the Argos breach, my card details were also misused by fraudsters around the time of my Argos order, so this could be more than a coincidence.

My email receipt from a subsequent order made in July last year didn’t seem to expose these details, so presumably the problem had been resolved by then. Nevertheless, I would hope Argos have the decency to contact all customers that may have been affected, making them aware of what has happened and urging them to check their statements carefully.

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