A whistleblower is a person who exposes or reports information about wrongdoing or illegal activities within an organisation or government entity.

For example:

The whistleblower reported the fraud to the police.

She became a whistleblower after seeing corruption at work.

The whistleblower who revealed that a hospital was fiddling figures about cancelled operations has won the right to appeal against his sacking.

Kelly was entirely responsible for his own plight and was wrong to be a whistleblower.

Think of the valiant whistleblower inside a corporation or an agency who puts himself at risk to uncover criminal perfidy.

That is the case of Edward Snowden, who is viewed as a traitor and spy by some and a whistleblower and hero by others.

Tradução:

AI Overview

Um whistleblower é um indivíduo que denuncia atividades ilegais ou irregulares dentro de uma organização, seja no setor público ou privado, para as autoridades competentes. Literalmente “soprador de apito”, a figura do whistleblower é protegida em alguns países e estimulada como forma de combater a corrupção e garantir a transparência. No entanto, a percepção cultural pode variar, e em algumas sociedades, a ação é vista negativamente, associada à delação.