The New York Attorney General Andrew Cuomo filed a civil fraud lawsuit against Ernst & Young LLP. Cuomo wrote in the complaint that "Ernst & Young substantially assisted Lehman Brothers, now bankrupt, to engage in a massive accounting fraud." The suit says Ernst & Young ignored warnigs from Lehman employees and from its own staff about the improper transactions. Lehman shifted $50 billion in assets off its balance sheet to foreign banks at critical financial reporting periods with a promise to buy back the securities at a premium price a few days later. With the cash held in the meantime, Lehman would pay down other debts, appearing to have less debt and give investors a better impression about the firm's financial condition than was really the case. Lehman and Bear Stearns were the most highly leveraged investment banks during the financial crisis of 2008. The unraveling of Lehman led to cracks in the world financial system because of interrelationships in the banking system. By taking this action the New York Attorney General's office is taking an important step to prevent the recurrence of such systemic crises from buildup of excessive leverage in the financial system....