T-Mobile has admitted that its staff sold thousands of customers' personal details to a third party. Earlier today, the Information Commissioner's Office revealed that a UK mobile network had sold thousands of customers details without permission - but refused to name the network involved, claiming it could prejudice a future prosecution. However, after four of Britain's "big five" mobile networks denied their involvement, T-Mobile had little choice but to come clean. Staff at the company allegedly sold thousands of customers records for what the Information Commissioner describes as a "substantial sum of money". The data was passed to rival networks and used to cold-call customers whose contracts were due to expire soon.

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