IntroductionAudit is a word that derives from the word Auditus, from the Latin, which means "a hearing", past participle of audire "to hear". To hear or see if an event is true. This outlines the work of reviewers in general. Auditing activity has been in existence since 4000 BC, where it was mainly focused on the control of financial transactions. It later developed into a modern verification business during the industrial revolution. Auditing was later introduced in America, where foreign investors demanded independent checks on the financial soundness of company records. The evolution of the concept of audit has given rise to the distinction between internal and external audit. Internal audit is an activity that exists within an organization; this allows internal auditors to perform their function in an entity as the eyes and ears of management. Body During the 1900s economic growth made it difficult for management to maintain control of company activities and operational efficiency. To overcome these problems, people known as internal auditors have been appointed to examine and report on the effectiveness of corporate governance, risk management and control processes within the organization. This has given rise to different definitions of internal audit over time. (Coetzee, Bruyn and Fourie) Today by definition, in the Institute of Internal Auditors' International Professional Practices Framework (A guide for internal auditors).” Internal auditing is an independent and objective assurance and consultancy activity designed to add value and improve the functioning of an organisation. Helps an organization achieve its objectives by taking a systematic and disciplined approach to assessing and improving the effectiveness of risk… half of paper… website. April 31, 2014 .3. Auditors, Institute of the Interior. Who we are. .4. Coetzee, Phila et al. Internal Audit: An Introduction 3rd Edition. LexisNexis, 2012.Mango. Financial governance: internal audit. 2014. May 2, 2014 .5. Ramabulana. Internal audit service. April 1, 2014. April 25, 2014 .6. Wyk, Anton van and Shirley Machaba. “Resources: Online Articles.” April 1, 2014. short. April 15th 2014 .