http://www.nasdaq.com/article/skimming-threatens-debit-card-users-while-fraud-strikes-1-percent-of-credit-card-transactions-cm172429#.UShKEFrF34Y http://www.nas

http://www.nasdaq.com/article/skimming-threatens-debit-card-users-while-fraud-strikes-1-percent-of-credit-card-transactions-cm172429#.UShKEFrF34Y http://www.nasdaq.com/article/skimming-threatens-debit-card-... says fraud "in 1% of transactions". I don't know whether those transactions tend to be larger or smaller than average. I'd assume the detection systems are quite good, and crooks start with small charges (gas stations and shoes are what I hear are test spots they use). So they may be pretty close to average sized transactions.