728_header.jpg (23748 bytes)
Google  Web AuctionBytes  

Home
Subscribe
Blog
Letters to Editor
EcommerceBytes
Podcasts
Forums
Merchant Directory
PR Service  
AuctionBytes TV
ABU Back Issues

Sponsor

COOL TOOLS

Calendar
eBay Fee Calculator
Collectors' Links
eBay Promo History
Bookshelf
Fraud Resources
Auction Site Fees
Auction Management
Payment Services
Storefronts Chart
Sniping Chart
Email List Hosting
Consignment Services
Drop-Off Store Laws
Ecommerce Resources
Photo Tips
Marketing Inserts
Yellow Pages
Classifieds

AUCTIONBYTES

Our Writers
Write For Us
Partners
Press
Advertising
About Us
Link To Us

150ab1.jpg 150ab2.jpg 150ab3.jpg

Auctionbytes-NewsFlash, Number 2015 - April 09, 2009 - ISSN 1539-5065      | Next Story

Merchant Attack Exposes Vulnerability in eBay's PayPal Service - Part 1
By Ina Steiner
AuctionBytes.com
April 09, 2009
Reading AuctionBytes: Merchant Attack Exposes Vulnerability in eBay's PayPal Service - Part 1

In mid-March, a merchant began receiving money into his PayPal account from bogus transactions and contacted PayPal. Neither he nor PayPal was able to get the money to stop arriving into his account, so PayPal restricted the merchant's account. For over 2 weeks, the merchant was unable to use his PayPal account to take orders, and while it does not appear to be a common occurrence, it could happen to any online merchant who becomes the victim of a determined fraud campaign.

The merchant, a programmer who sells scripts on his website, contacted us after the bogus transactions started arriving. And so began our investigation into a baffling case of online fraud in which we learned about some PayPal features that every merchant should know about and be prepared to use.

The merchant was using PayPal's Add to Cart buttons and PayPal's shopping cart. The payments began coming from different, bogus, email addresses on Sunday, March 15; by Wednesday evening, the payments were still arriving. At that point, he removed all Add to Cart buttons from all pages on his website, but additional payments continued to be deposited into his account.

We wondered how scammers could use bogus information (including email address, physical address, and phone number) to send payments through PayPal with credit cards that were, one would conclude, compromised or stolen. (Another obvious question was, what was the point of sending payments to the merchant, whose account the scammer could not access.)

PayPal spokesperson Michael Oldenburg said the service allows merchants to accept payments by two methods. The first is through their PayPal account, which they can fund several ways including bank account, credit card or their account balance. The second method is through direct credit card payment, which PayPal refers to as a guest account.

Once a customer clicks on a merchant's Add to Cart button, they are taken to PayPal's website where they can enter their credit card information without having a PayPal account. So why didn't PayPal's fraud filters catch the fraudulent transactions? We'll examine this more closely in Part 2 of this series. Did the merchant have the option of rejecting all payments other than shoppers who have valid PayPal accounts? Read on.

PayPal Account Optional
Throughout the ordeal, no one at PayPal suggested to the merchant that he turn off the option to accept direct credit-card payments, something he now believes would have immediately prevented the bogus transactions from being processed. The first time he heard of this capability was three weeks after the bogus payments started, when a new PayPal representative reached out to him. We suspect many merchants may also be unaware of this feature, called PayPal Account Optional.

The default for PayPal Account Optional is "on," which means merchants' settings are turned on to have the ability to accept direct credit card payments by default. Many merchants will want to keep it turned on so they don't lose sales from shoppers who are unable or unwilling to sign up for a PayPal account. (PayPal also benefits from guest accounts since it is a customer acquisition tool - on their receipts, PayPal urges them to create a PayPal account.)

However, if merchants are in a high-risk category or if they find themselves in a similar situation as the merchant in this story, it's good to know how to access the feature. For more information, look for PayPal Account Optional on this page.

AuctionBytes received an update from PayPal as we were going to press:

This was a rare occurrence, as we discussed, with a new type of fraud. Our fraud models worked as they should in detecting the bad payments, which is why they were limited, but I understand that it was frustrating for (the merchant) as we worked to stop the payments from coming through.

One thing I wanted to make sure to point out is that the vulnerability in our PayPal Account Optional feature has since been closed, so we've already fixed the issue that allowed these payments to go through. So, it wouldn't be accurate to advise that merchants turn off this feature to protect against this going forward. Of course, merchants always have that option if they'd prefer to do so.

More on this, including insight from industry insiders will be published tomorrow in Part 2.

Comment on the AuctionBytes Blog

Email this story to a friend.


AddThis Social Bookmark Button
| Next Story

Related Stories
  • New Law May Prove Taxing for PayPal and for eBay Sellers - January 18, 2009, Issue #231
  • PayPal Launches Shopping Website - January 19, 2009, Issue #1958
  • eBay Expands Guest Buying Program to 15 Transactions - January 21, 2009, Issue #1960
  • PayPal Merchants with Credit Card Accounts Must Update Certs - February 24, 2009, Issue #1984
  • Etsy Tests PayPal Billing - March 04, 2009, Issue #1990
  • PayPal's Charity Smackdown at SXSW - March 23, 2009, Issue #2003
  • Blackbaud and PayPal Offer New Web Tools for Nonprofits - March 31, 2009, Issue #2008
  • PayPal Continues Testing Student Accounts - April 03, 2009, Issue #2011
  • PayPal Hires Asia Pacific Manager, Wins Prepaid Card Award - April 07, 2009, Issue #2013
  • Merchant Attack Exposes Vulnerability in eBay's PayPal Service - Part 2 - April 10, 2009, Issue #2016
  • PayPal Buyer Protection Launches on eBay's Dutch Classifieds Site - May 14, 2009, Issue #2041
  • PayPal Rolling Out New Design - May 15, 2009, Issue #2042
  • Yahoo Makes It Easier to Use eBay, PayPal from Anywhere - June 08, 2009, Issue #2053
  • PayPal Holds Affect eBay and Off-eBay Transactions - June 09, 2009, Issue #2054
  • PayPal Launches 'Do Stuff for Money' Facebook App - June 23, 2009, Issue #2064
  • PayPal Announces New Express Checkout API to Reduce Cart-Abandonment - June 25, 2009, Issue #2066
  • Online Shopping Set to Boom According to PayPal UK Survey - June 26, 2009, Issue #2067
  • PayPal Follows eBay in Opening Platform to Third-Party Developers - July 07, 2009, Issue #2074
  • PayPal Holds Seminar for Developers in Australia - July 13, 2009, Issue #2078
  • PayPal Opens Platform, Announces Developers Conference - July 24, 2009, Issue #2087
  • PayPal Publishes Policy Updates - July 27, 2009, Issue #2088
  • Merchants Must Contact PayPal for Outage Compensation - August 12, 2009, Issue #2100
  • PayPal Introduces Student Account - August 12, 2009, Issue #2100
  • eBay Buyers Can Pay with Credit Card without PayPal Account - August 19, 2009, Issue #2100
  • As PayPal Goes Mainstream, So Do Its Blunders - August 20, 2009, Issue #2101
  • PayPal Runs Twitter Quiz Show - August 21, 2009, Issue #2102
  • eBay's PayPal Faces Increasing Competition in Payments Space - August 27, 2009, Issue #2106
  • eBay Reports PayPal Glitch with UPS Accounts - August 27, 2009, Issue #2106
  • PayPal Accepting Nominations for Developer Awards - September 07, 2009, Issue #2113
  • eBay CEO: Skype Deal Will Happen, Open to PayPal Spin-off - September 25, 2009, Issue #2124
  • PayPal Expands Ability to Place Temporary Holds on eBay Transactions - October 06, 2009, Issue #2131
  • PayPal Lets Shoppers Fund Accounts with Cash - October 08, 2009, Issue #2133
  • eBay and PayPal Now Offer Bill Me Later on BIN and Some Auctions - October 20, 2009, Issue #2141
  • Payvment Brings PayPal-Powered Shopping Cart to Facebook - October 21, 2009, Issue #2142
  • PayPal Launches Own Forum as It Moves toward Independence from eBay - October 30, 2009, Issue #2149
  • PayPal Offers Holiday Deals through Retail Partners - October 30, 2009, Issue #2149
  • You Can't Take It with You: PayPal and Estate Planning - November 01, 2009, Issue #250
  • PayPal Opens Platform to Target $30 Trillion Opportunity at DevCon - November 03, 2009, Issue #2151
  • PayPal Opens Its Global Payments Platform - November 04, 2009, Issue #2152
  • PayPal Announces Developer Challenge for Innovative Apps - November 05, 2009, Issue #2153
  • PayPal Galvanizes Users to Help Lobby Government - November 13, 2009, Issue #2159
  • PayPal's 2008 Holiday Promotions Drove Increased Usage at Retail Sites - November 16, 2009, Issue #2160



  • Discuss this story in our forums.

    Site Index
    Copyright 1999-2009. Steiner Associates LLC. All rights reserved. Privacy Policy.