From Merriam-Webster: https://www.merriam-webster.com/legal/whistleblower https://www.merriam-webster.com/legal/whistleblower Legal Definition of whistleblowe

From Merriam-Webster: https://www.merriam-webster.com/legal/whistleblower https://www.merriam-webster.com/legal/whistleblower Legal Definition of whistleblower : an employee who brings wrongdoing by an employer or other employees to the attention of a government or law enforcement agency and who is commonly vested by statute with rights and remedies for retaliation That is the "legal" definition, but I understood also the "common" definition is such, otherwise any employee that reports to his/her superior/management anything that is not "right" or "legal" or "correct" would instantly become a whistleblower by the sheer fact of reporting that. So according to Wikipedia all internal inspectors, auditors, etc. in a company would be automatically "internal" whistleblowers.