18). However, the auditors' work has been called into question by many companies as further financial problems and fraud have been found. The case of HIH and Arthur Anderson demonstrated the need for a professional auditor who holds competence, independence and ethics in high regard. Deficiencies in the work of auditors can lead to serious outcomes in agreement with stakeholders and investors. Therefore, it is necessary for all audit firms to establish a standard code of ethics and professional skills to meet the professional needs of the company.