"[It's no surprise] he's so on top of what we are doing and in some cases, ahead of the curve," one senior Liberal source said, after being informed of the oversight by BuzzFeed News.



It's understood Bernardi didn't inform the whip's office he was still receiving Liberal Party information.

Liberal insiders are now worried about what information has accidentally been emailed to the South Australian senator and his staff.



Bernardi didn't answer BuzzFeed News' questions on whether he's been reading the emails, or was using the information to his advantage.

Former senator Chris Back also remains on the Liberal distribution list despite retiring from politics last week. As does Bill Heffernan, who left parliament in May last year, and Richard Colbeck and David Johnston, who both lost their seats at the last election. As all four have left parliament, their email accounts are no longer active.

Victorian MP Kevin Andrews, however, is not on the list.