March 24 (Bloomberg) — Five former aides to Bernard Madoff who spent decades working for his firm were found guilty of helping run the biggest Ponzi scheme in U.S. history, a $17.5 billion fraud exposed by the 2008 financial crisis.

The three men and two women, hired by Madoff with little financial experience, were convicted on all counts. The defendants failed to persuade a federal jury in Manhattan they were ignorant of the fraud despite being part of the inner circle at his New York-based firm.

Hatched in the 1970s, Madoff's fraud targeted thousands of wealthy investors, Jewish charities, celebrities and retirees. It unraveled in 2008 when the economic crisis led to more withdrawals than Madoff could afford to pay out. In addition to $17.5 billion in principal, it erased about $47 billion in fake profit that customers thought was being held in their accounts.