A look at some of the high-profile corporate fraud scandals targeted by a government task force created in 2002:
* Enron: Criminal charges brought against 36 defendants, including 27 former executives. Eighteen have pleaded guilty or been found guilty at trial, including Enron founder Kenneth Lay and former chief executive Jeffrey Skilling. Skilling is serving a sentence of more than 24 years. Lay's convictions for conspiracy, fraud and other charges were wiped out after he died of heart disease last year. The government seized a total of more than $100 million in illegal gains and helped victims recover more than $450 million.
* Enterasys: Four former officers, including the CEO, were convicted of artificially inflating revenues by over $11 million to increase or maintain the company's stock value, resulting in a $1.3 billion loss to shareholders.
* Qwest: The former CEO was convicted on insider-trading charges for selling more than $100 million of Qwest stock when he knew the company was at financial risk. A former CFO of the company pleaded guilty to insider trading charges.
* Adelphia: The former CEO and CFO were convicted of tax fraud charges stemming from their financial statements and an embezzlement scheme. More than $715 million in forfeitures were made available to victims.
* WorldCom: The former CEO was convicted of conspiracy, securities fraud and making false statements in SEC filings and was sentenced to 25 years in prison.
* Enron: Criminal charges brought against 36 defendants, including 27 former executives. Eighteen have pleaded guilty or been found guilty at trial, including Enron founder Kenneth Lay and former chief executive Jeffrey Skilling. Skilling is serving a sentence of more than 24 years. Lay's convictions for conspiracy, fraud and other charges were wiped out after he died of heart disease last year. The government seized a total of more than $100 million in illegal gains and helped victims recover more than $450 million.
* Enterasys: Four former officers, including the CEO, were convicted of artificially inflating revenues by over $11 million to increase or maintain the company's stock value, resulting in a $1.3 billion loss to shareholders.
* Qwest: The former CEO was convicted on insider-trading charges for selling more than $100 million of Qwest stock when he knew the company was at financial risk. A former CFO of the company pleaded guilty to insider trading charges.
* Adelphia: The former CEO and CFO were convicted of tax fraud charges stemming from their financial statements and an embezzlement scheme. More than $715 million in forfeitures were made available to victims.
* WorldCom: The former CEO was convicted of conspiracy, securities fraud and making false statements in SEC filings and was sentenced to 25 years in prison.
