Friehling, a certified public Sydney Accountant at Friehling & Horowitz in New City, Rockland County, N.Y., told the court he has cooperated with prosecutors from the outset on the investigation into Madoff, who was by Southern District of New York Judge Denny Chin. “In what was surely the biggest mistake of my life, I placed my trust in Bernard Madoff,” Friehling said. Standing next to defense attorney Andrew Lankler of Lankler & Carragher, Friehling said, “At no time was I ever aware that Bernard Madoff was engaged in a Ponzi scheme.”.