Francesco Vincent Serpico is an American retired New York Police Department detective, best known for whistleblowing on police corruption. In the late 1960s and early 1970s, he was a plainclothes police officer working in Brooklyn, the Bronx and Manhattan to expose vice racketeering. In 1967, he reported credible evidence of widespread police corruption, to no effect. In 1970, he contributed to a front-page story in The New York Times on widespread corruption in the NYPD, which drew national attention to the problem. Mayor John V. Lindsay appointed a five-member panel to investigate accusations of police corruption, which became the Knapp Commission.

Whistleblowing is the activity of a person, often an employee, revealing information about activity within a private or public organization that is deemed illegal, immoral, illicit, unsafe or fraudulent. Whistleblowers can use a variety of internal or external channels to communicate information or allegations. Over 83% of whistleblowers report internally to a supervisor, human resources, compliance, or a neutral third party within the company, hoping that the company will address and correct the issues. A whistleblower can also bring allegations to light by communicating with external entities, such as the media, government, or law enforcement. Some countries legislate as to what constitutes a protected disclosure, and the permissible methods of presenting a disclosure. Whistleblowing can occur in the private sector or the public sector.