Wanted: Investment Banker Who Became Poster Boy Of Massive Tax Scandal A New Zealand native who became a high-rolling investment banker in London, the 53-year-old has been linked to the dividend-tax strategy known as Cum-Ex that German lawmakers have decried as the biggest tax fraud in history. Updated: February 15, 2021 5:15 pm IST Paul Mora amassed a wealth of contacts across London as he transitioned from one bank to the next. People strolling through shopping malls or train stations across Germany this week saw something different on the billboards that typically advertise chocolate bars or dating sites: the face of a man wanted for suspected tax evasion.