'The ‘open banking’ revolution that encourages customers to share their details in the hope of better deals on everything from broadband to gas bills puts them at risk from fraudsters, experts warned last night.
From today, current account holders will be able to give permission for their personal data to be shared with third parties.
This will enable firms such as broadband or energy providers to tailor deals to them by analysing their spending history.
The new rules form part of sweeping data sharing reforms, which are supposed to herald a new era of competition.
However, a separate piece of legislation, called the Payment Services Directive, allows some companies who want access to a customer’s details to ask for their online username and password.
Major banks are said to have privately voiced concerns to City watchdogs that the reforms could leave millions of internet banking customers exposed.
A senior figure at one of the Big Five banks said: ‘We’re very concerned about scams. In practice customers aren’t going to check if a firm is properly authorised if they have a nice website, and could just hand over their details to fraudsters.’
Under existing banking rules, current account customers are not allowed to share their details with anyone.
Banks are also barred from sharing information about customers’ payments. But with Open Banking, price comparison websites or energy firms could get access to accounts and then directly analyse a consumer’s spending on utilities and offer them better deals.'
Read more: Customers who sign up to 'open banking' revolution where they share details in the hope of better deals 'could be put at risk from fraudsters'
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