Walmart対Visa

下記の記事が出ている。

　Walmart Sues Visa Over New Debit Card Rules
　DARK Reading: May 12, 2016
　http://www.darkreading.com/cloud/walmart-sues-visa-over-new-debit-card-rules/d/d-id/1325490

　Wal-Mart Sues Visa Over Transactions
　Wall Street Journal: May 10, 2016
　http://www.wsj.com/articles/wal-mart-sues-visa-over-chip-enabled-debit-card-transactions-1462906677

　A key security takeaway from Walmart's chip-and-PIN suit against Visa
　CIO: May 12, 2016
　http://www.cio.com/article/3069572/payment-processing/a-key-security-takeway-from-walmarts-chip-and-pin-suit-against-visa.html