The latest financial crisis highlighted several problems with credit derivatives and raised questions about the effectiveness of Credit Rating Agencies (CRAs) assessment of risks in rating complex financial products such as Collateralized Debt Obligation (CDO). Credit derivatives provided a powerful new tool for managing credit risk that had the potential to facilitate risk-sharing, enhance the efficiency of risk management and promote market completeness. Measuring the exposure taken on a credit derivative contract can be very difficult. As a result market participants have rely on credit...