Attorney-General Christian Porter

It’s no surprise that Christian Porter has threatened to haul in the lawyers to fight the allegations aired on Monday night’s Four Corners program about his public behaviour with a young female Liberal staffer.

Threatening legal action acts as a deterrent to others who might publish more, and it's very much in character for a politician with a reputation for seeing transparency and accountability as the enemy.

As attorney-general, Porter has pursued secrecy in all its forms; from appointing political friends to government agencies, to introducing rules that allow him to personally sign off on the prosecution of journalists.