Sean Sposito

Wal-Mart Stores Inc., the nonbank that banks love to hate -- and fear -- is at it again. The retailer next week will begin rolling out automated versions of its MoneyCenter offices, which provide a range of financial services to shoppers.

Visa Inc. said its acquisition of the South African mobile payments company Fundamo will help it serve more underbanked consumers abroad. The San Francisco payments network said it would pay about $110 million for the Cape Town company.

MasterCard said its SecureCode payment verification system experienced disruptions temporarily Wednesday as part of an attack that also took out its main website by overwhelming it with high traffic.