On the day Richard White stepped down as chief executive of WiseTech Global after weeks of pressure, the billionaire found time for another important change – quietly appointing his new wife Zena Nasser to his private investment vehicle’s board.

A week later on November 2, Nasser, a former criminal lawyer, became a 50 per cent owner of the vehicle, which owns an anti-money laundering start-up and the company that financed a controversial multimillion-dollar property previously owned by her ex-husband.