Plaid has encouraged consumers to contact Capital One or file a complaint with the Consumer Financial Protection Bureau. Some Capital One customers have taken to social media to protest the bank’s new policy, using the hashtag #protectdataaccess. There’s growing discord between banks and the financial technology companies, or fintechs, that want to use their data. Banks want startups to use APIs, which give lenders more control over what data is distributed and how it is released. Fintechs say the restrictions can hinder them from performing services they promise consumers. “We’re extremely disappointed to see Capital One blocking consumers from accessing their own data,” said Matt Haghighi, founder of MasonPay, an app that uses Plaid and helps users pay off their credit card debt faster. “The majority of our support tickets have been related to linking issues around Capital One.”

https://www.bloomberg.com/news/articles/2018-06-27/capital-one-restricts-third-party-data-access-upsets-customers