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The rub is that the global messaging system's security is only as strong as the weakest link.

Like any long-term relationship, Walmart and Visa have had their ups and downs. Sometimes these interactions were solely between the two companies; but many times, Walmart and Visa's conflicts gave a voice to the entire retail and payments industries.

Swift, the inter-bank messaging system embroiled in one of the largest cyber heists in history, warned customers that hackers have struck again, attacking a commercial bank client that it didn’t name.

Swift, the inter-bank messaging system embroiled in one of the largest cyber heists in history, warned customers that hackers have struck again, attacking a commercial bank client that it didn't name.

The payment giant's technology chief says he has an eye on bitcoin, the blockchain and the fintech competitors that have flooded the payments arena — and vows his company will consider partnering with some of them and can beat the rest.

Hackers believed to be working from China accessed the computer systems of top officials at the Federal Deposit Insurance Corp., according to a top House lawmaker investigating the incident.

When a breach of the world's major e-mail service providers was reported last week, it drove home the fact that a single stolen password can put numerous accounts in danger.

Unless the U.S. card business is able to offer merchants scaleable solutions that are cheaper and quicker to implement, there is a serious risk of full EMV migration taking several years to complete.

Walmart and Visa have had a long and volatile relationship, and the retailer's latest lawsuit against the global card brand gives voice to a struggle that many other companies are too small to fight.

Officials from the Federal Reserve Bank of New York, Bangladesh Bank and the payments network Swift vowed Tuesday to catch the thieves who took $81 million out of the Bangladesh central bank's account at the New York Fed.