Nortel Execs Not Guilty of Fraud at Now-Bankrupt Tech Giant

The ex-CEO of bankrupt Nortel Networks and two other executives have been found not guilty of falsifying financial reports to boost their bonuses. Nortel was once the world's second-largest telecommunications gear maker, with a market cap that hit $297 billion before the dot-com bubble burst and the company tanked.

FBI Makes First Arrest in SEC Insider Trading Probe

On Wednesday, the FBI arrested Don Chu, an expert on Asian markets for Primary Global Research, setting the tone for the SEC's crackdown on insider trading. Chu was charged with conspiracy to commit securities fraud and conspiracy to commit wire fraud.

Two More Arrested in Madoff Ponzi Scheme

Annette Bongiorno and Joann "Jodi" Crupi, both long-term employees at Bernard L. Madoff Investment Securities, were arrested Thursday and charged with multiple counts of conspiracy, securities fraud, falsifying documents and tax evasion.