New kind of telephone scam found in UK - Telegraph

Action Fraud is warning of a new form of fraud in which the public are sent letters, texts or emails asking them to phone their banks.
There is no request for passwords or other personal information, so many recipients may phone the number provided.
When your call is answered, a recording device is switched on.Your call is then transferred to a legitimate phone line operated by your bank, where you log in as usual by providing key letters of your password and other information. All of this is recorded, allowing the fraudster to build up information which could be used in future to access your accounts.

The reason why this scam is so successful is because the fraudster’s presence is unknown to both the victim and the bank,” Action Fraud said.
Customers should only ever use phone numbers displayed on banks’ websites or on statements, it said.

If you are responding to a message or letter, you should tell the bank member of staff at the outset of the call, it advised.