After a security upgrade blocked Plaid from accessing customer data, the startup launched a critical social media campaign against the consumer finance giant - effectively blaming Capital One for not letting consumers access and utilize their own data.  However as other aggregators have met Capital One's security requirements, Plaid now faces scrutiny on their willingness to meet these higher standards.  The incident may point to a bigger issue: the need for one standard for handling data across the whole U.S. financial services industry.