Hughes said the topic of fraud was "painful in all our hearts" in the wake of multiple financial misadventures in the past decade.
"With the outcomes in relation to the situation such as David Ross yesterday, it is indeed a national tragedy that we need to continue to focus on."
Another of the summit's keynote speakers, Gerri Walsh, shared her experience heading up the investor education programme at America's largest independent securities regulator.
Walsh, who works for the Financial Industry Regulatory Authority (Finra), said one of the biggest challenges to raising levels of investor education was audience engagement.
"Some people describe financial education as serving up broccoli.
"It's the veg you should eat that is good for you. But frankly what do you prefer? I prefer chocolate."
To improve financial literacy, she said, educators needed to think harder about who their audiences were and understand their needs.
"You believe people need this information but how do you make them want it? That involves stepping into the shoes of your audience and understanding what their daily life looks like."
Hughes said there was still a lot of work to do in raising levels of financial literacy in New Zealand.
"My favourite story is the young fellow who was asked a few years ago what the NZX was and he interpreted it to be a pornographic magazine."