While former trader David Kugel was helping conman Bernard Madoff fabricate stock trades, his son Craig Kugel was giving U.S. authorities false information about who worked at the now-defunct Madoff firm, Reuters reported yesterday. Craig Kugel, a human resources employee at Bernard L. Madoff Investment Securities LLC from 2001 until the massive Madoff fraud was revealed in December 2008, pleaded guilty to five criminal charges in U.S. District Court in New York yesterday. He is not charged with involvement in the massive Madoff fraud. However, Kugel told the judge that he sent forms to the U.S. Department of Labor about people who were not employed by the firm even though they were on payroll and entitled to benefits. He also admitted to filing false U.S. individual income tax returns.