Organizations are using computer-based audit technique that can be adapted to develop and improve the continuous audit process. In a computer based audit approach, IS auditors are not just relying on risk, they are also relying on internal and operational controls as well as knowledge of the organization. An IS audit is not at all similar to a financial audit. IS Audit is undergoing a transformation from an old audit concept to a new audit concept. This shift is also known as a transformation from audit to assurance. The development of information technology makes the audit environment more flexible it provides auditors with new methods and tools to assist their work. The usage of new tools like knowledge based system helps in getting competitive advantage for auditors and auditing firms.