Nowadays, it is more than obvious that fraud poses a major threat to businesses. Fraud can harm companies in terms of good business, or it can cause them financial collapse. In this sense, fraud can be defined as bribery, manipulation, corruption and intentional misrepresentation in financial statements, as well as in some other documents relevant to the business. In order to prevent fraud in a timely manner and to investigate the cause, a detailed audit by an auditor is required. This type of audit that deals with the detailed investigation of fraud is called forensic audit. In order for the research to be as successful as possible, certain knowledge and skills are important, as well as compliance with laws and regulations in their implementation, and all this includes business forensics, forensic accounting and external audit, which are closely related to forensic audit. In addition to conducting a detailed audit, it is essential to understand fraud warning indicators, in a timely manner to avoid possible adverse consequences. The paper presents the most common examples of fraud, such as bribery, corruption, falsification of financial statements and some other actions through several cases, among which the „Enron“ case and the „WorldCom“ case stand out.