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Banks want to sink as much data from the consumer device as possible. Remember bank app wants a permission to access all files and calls and messages and location and physical sensors?

They don't care about security other than for avoiding devices that gives user a control over what data is accessible.

Security in banks is generally very basic (anyway, everything is covered with insurance, which is paid by the users, in the end).

User data is used mainly to calculate credit rating and for upselling.