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Retailers filed lawsuits against the credit card companies for placing restrictions on surcharges. The settlement eases those restrictions.

The retailer's objection puts the settlement in serious doubt.

Prosecutors said the denial of service attacks were not "victimless crimes." They estimated that it cost the companies attacked $5.6 million in extra staffing, software and loss in sales.

The U.S.-based credit card companies responded to sanctions imposed on Moscow in the wake of its annexation of Crimea.

The 22- and 28-year-olds were convicted of using denial of service attacks to defend WikiLeaks. Christopher Weatherhead will serve 18 months in jail.

In what is likely to be the largest computer-information breach yet reported, MasterCard says a computer hacker gained access to 40 million credit-card accounts. Many other credit card companies were affected. What should customers do?

Visa and Mastercard announced a major settlement with U.S. merchants, potentially ending years of litigation over the fees charged every time a credit or debit card is used in a store or restaurant.

The credit-card rivals will join others in the industry to push chip technology to replace the more vulnerable magnetic stripes on most cards in the U.S.

Visa and Mastercard say they've reached a deal to resolve a long-running battle with businesses over "swipe fees." But retailers and restaurants say it doesn't go far enough.

Mastercard is distributing a new bank card next year that aims to help customers with vision impairments. The card has notches cut into the sides to help customers find the right card by touch alone.