An unprecedented leak of financial data known as the Pandora Papers has revealed the offshore financial assets of many current and former world leaders and hundreds of politicians from Asia and the Middle East to Latin America. But this is not the first time that confidential documents have leaked online. From the Pentagon papers to the Pandora leaks, here are five major leaks in world history:

Edward Snowden exposes NSA spying programs

It’s hard to discuss major leaks without mentioning Edward Snowden, an ex-NSA contractor who disclosed thousands of papers detailing the agency and its habit of spying on, well, pretty much everyone. The NSA was gathering data on phone records, according to papers revealed by Snowden. The documents showed the existence of PRISM, a program in which the NSA sought information from companies such as Google, Facebook, and Apple in order to collect user data.

Also Read| What are the Pandora Papers?

The Pentagon papers

The New York Times released a series of extracts from a top-secret Department of Defense assessment on the United States’ participation in Vietnam between 1945 and 1967 in June 1971. Part of a study commissioned by Secretary of Defense Robert McNamara, known as the Pentagon papers, indicated that four successive presidential administrations had purposefully deceived Congress and the American public about the Vietnam War’s aims and progress.

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The Panama papers

A total of 11.5 million papers were leaked from the database of Panama-based Mossack Fonseca, the world’s fourth-largest offshore legal company, in April 2016. Personal financial information of thousands of rich individuals and public figures was disclosed in the files.

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Sony Pictures ‘The Interview’ hack and leak

Sony Pictures was hacked in 2014 by a group calling itself the “Guardians of Peace,” and a plethora of confidential papers, including details about executive pay and copies of unreleased films, were leaked online. Shortly after the breach, the group demanded that Sony withdraw its film The Interview, which depicts the assassination of North Korean leader Kim Jong-un, fuelling the belief that the hack was carried out by the country.

Also Read | Pandora Papers: All you need to know about the uncovering

Iraq war logs

Wikileaks published approximately 400,000 secret military papers regarding the Iraq War in October 2010. The records contained proof that the US military purposefully disregarded prisoner mistreatment by its Iraqi allies, and that there were 15,000 more civilian fatalities than previously reported.