Banks say, and rightfully so, that you shouldn’t share your password for your bank account with anyone else. Including sites like TurboTax. This caused some “issues” when TurboTax users tried to download bank account data.
“Bank, Intuit End Spat on Passwords,” The Wall Street Journal, January 28, 2017, B5. The bank will provide a token, which obviates the need for the user to give Intuit their bank password.
Interesting question about who is responsible for protecting the security of your account from third parties. And you.