whistleblower

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whistleblower

a person, usually an employee, who reveals information, which he is contractually obliged to keep secret, because of an overriding public interest. The principle was recently introduced into the UK by the Public Interest Disclosure Act 1998, which has, for example, resulted in an accountant who was dismissed for exposing financial irregularities of his manager to the company headquarters in the USA being awarded not that much short of £300,000.