SAS 99—Consideration of Fraud in a Financial Statement Audit

The auditor is responsible for planning and performing the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether caused by error or fraud.
The auditor should specifically assess the risk of material misstatement of the financial statements due to fraud and should consider that assessment in designing the audit.
Management is responsible for the prevention and detection of fraud.

The auditor is responsible for planning and performing the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether caused by error or fraud.