Capital One Restricts Third-Party Data Access, Upsets Customers

  • Apps used by consumers are said to be hampered by the change
  • Bank says it improved security, apps can still do their jobs

Photographer: Guy Calaf/Bloomberg

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Capital One Financial Corp. is limiting how account data flows to outside apps for managing finances, prompting a backlash from the bank’s customers who say they have been locked out of their own information.

A technology upgrade led to the disruption, people familiar with the situation said. Plaid Technologies, whose software is used to connect banks with third parties, is unable to link with some Capital One accounts, according to the people, who requested anonymity because they weren’t authorized to speak publicly.