Exposers are individuals or entities who reveal hidden or secret information or bring them to public notice. Some common synonyms for exposers include informants, whistleblowers, truth-tellers, discloseurs, leakers, mole, betrayers, defectors, and revealer. An informant can be a person who provides insider information to the authorities or an organization. Whistleblowers are employees or insiders who expose illegal or unethical practices within a company. Truth-tellers reveal accurate and honest information. A discloseur is an individual who discloses confidential information. A mole is a person who works undercover in an organization. Betrayers reveal secrets or information about someone with the intention of causing harm. Defectors are individuals who publicly leave an organization and reveal its secrets. Revealer is a person who discloses something that was previously unknown.