A whistleblower is an employee, former employee, or member of an organization who reports misconduct to people or entities that have the power to take corrective action. Generally the misconduct is a violation of law, rule, regulation and/or a direct threat to public interest -- fraud, health, safety violations, and corruption are just a few examples. For instance, Jeffrey Wigand is well-known in the United States for exposing the Big Tobacco scandal, revealing that executives of the companies knew that cigarettes were addictive and that they added other carcinogenic ingredients to the cigarettes. Whistleblowers are most often employees of businesses, but are also often employees of government agencies.