Christian Porter was warned over public behaviour with young female staffer by then-prime minister Malcolm Turnbull

Cabinet minister Christian Porter was warned by then-prime minister Malcolm Turnbull about his public behaviour with a young female Liberal staffer, because of Mr Turnbull's concerns he could be at risk of compromise or blackmail. Key points: Christian Porter was given a warning by Malcolm Turnbull after Mr Porter was spotted "kissing and cuddling" a young staffer at a Canberra bar Another minister, Alan Tudge, angrily pressured a journalist to delete a photo of Mr Porter and the woman Mr Tudge also had an affair with a staffer A Four Corners investigation can reveal Mr Porter raised eyebrows among political staffers in 2017 after being seen with the young woman — who was working for another Cabinet minister — at Canberra's Public Bar. The investigation can also reveal Mr Turnbull's infamous "bonk ban" was not just aimed at former deputy prime minister Barnaby Joyce, but also at Mr Porter and the now-Acting Immigration Minister, Alan Tudge, who was having an affair with a female adviser in 2017. Acting Immigration Minister Alan Tudge and media adviser Rachelle Miller had an affair Ms Miller told Four Corners she saw Mr Porter and the young Liberal staffer "kissing and cuddling".