It was back in 2008 when the City of London investigated the secret trials carried out on the BT network using the targeted advertising system, Phorm.
However, after looking into the case the police found no evidence that a crime had been committed due to lack of criminal intent.
However, according to theregister.co.uk the case is about to be reopened and once more BT and Phorm will go under the microscope.
It seems that the Crown Prosecution Service (CPS) is behind the reopening of the case and it has asked the City of London police to assist in the investigation.
Phorm was designed to deliver targeted adverts to users, based on their internet activities but with BT, trials were held in secret without users’ knowledge or consent.