The former head of security at Rupert Murdoch's UK newspaper empire has threatened to blow the whistle with "shock" revelations about the company.
Mark Hanna, who was cleared of perverting the course of justice in the phone hacking trial last year, spoke out after it was confirmed that Rebekah Brooks was returning to News UK - formerly News International.
It was announced on Wednesday that Mrs Brooks (47) had been appointed to her former role as chief executive, a year after she was also acquitted of all charges in the high-profile trial.
In a video posted on YouTube Mr Hanna, who left his job in January, said: "To me - as previous director of group security - this is Murdoch's middle finger being shoved right in my face."
Mrs Brooks quit as chief executive of News International at the height of the phone hacking scandal in July 2011. She reportedly walked away with £10m.
Mr Hanna was reported to have received £30,000 after he was made redundant, but has been unable to find other work because of the "stigma" of the case.