Apparently Lloyds Banking Group crossed their wires and allowed users access to other users account histories.

one woman told BBC News she was able to see the accounts of six different users on the Bank of Scotland app, including some National Insurance numbers, over a 20-minute period.

Lloyds Bank customer Carl Lewis told the BBC opening up his app on Thursday morning to see transactions unconnected to him made him "very concerned about the safety of my details".

"It was the full history of the account that I could stroll through month by month, including direct debits to the DVLA where the car registration number is shown," he said.

This is fixed in particular by running your own node. Using wallet software that is aimed at someone else's node could have the exact same result as the Lloyds Banking Group glitch. However, using your own node to provide your wallet with chain details means no one can leak your data.