A whistleblower is an employee, former employee, or member of an organization, especially a business or government agency, who reports misconduct to people or entities that have the power and presumed willingness 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. - http://en.wikipedia.org/wiki/Whistleblower