"An industry consultant, Cherian Abraham, put the fraud rate at 6 percent, compared with a traditional credit card fraud rate that is relatively minuscule, 10 cents for every $100 spent. Mr. Abraham wrote in a blog post, one of the first to spotlight the issue, that the Apple Pay fraud “is growing like a weed, and the bank is unable to tell friend from foe. No one is bold enough to call the emperor naked.”"
"The vulnerability in Apple Pay is in the way that it — and card issuers — “onboard” new credit cards into the system. Because Apple wanted its system to have the simplicity for which it has become famous and wanted to make the sign-up process “frictionless,” the company required little beyond basic credit card information about a user. Nor did it provide much information to the banks, like full phone numbers and addresses, that might help them detect fraud early."
"The vulnerability in Apple Pay is in the way that it — and card issuers — “onboard” new credit cards into the system. Because Apple wanted its system to have the simplicity for which it has become famous and wanted to make the sign-up process “frictionless,” the company required little beyond basic credit card information about a user. Nor did it provide much information to the banks, like full phone numbers and addresses, that might help them detect fraud early."
http://www.nytimes.com/2015/03/17/business/banks-find-fraud-...
Neither Apple nor banks will release official fraud numbers for Apple Pay despite repeated requests.