On 20 October 2017, an anonymous
Reddit user hinted at the existence of the Paradise Papers.
 Later that month, the
International Consortium of Investigative Journalists (ICIJ) approached the
offshore law firm
Appleby with allegations of wrongdoing. Appleby said that some of its data had been stolen in a
cyberattack the previous year, and denied the ICIJ's allegations.
 After media outlets started reporting on the documents, the company said that there was "no evidence of wrongdoing", that they "are a law firm which advises clients on legitimate and lawful ways to conduct their business", and that they "do not tolerate illegal behaviour".
 Appleby stated that the firm "was not the subject of a leak but of a serious criminal act" and that "this was an illegal computer hack". "Our systems were accessed by an intruder who deployed the tactics of a professional hacker", the company said.
The documents were acquired by the German newspaper
Süddeutsche Zeitung, which had also obtained the
Panama Papers in 2016. According to the
BBC, the name "Paradise Papers" reflects "the idyllic profiles of many of the offshore jurisdictions whose workings are unveiled", so-called
tax havens, or "tax paradises".
 The BBC also notes that the name "dovetails nicely with the French term for a tax haven—paradis fiscal".
 The data comprises some 13.4 million documents—totaling about 1.4 terabytes—from two offshore service providers, Appleby and
Asiaciti Trust, and from the company registers of 19 tax havens.
 Süddeutsche Zeitung journalists contacted the ICIJ, which has been investigating the documents with 100 media partners. The consortium made the data available to the media partners using
 a graph-database platform made for connected data, and
 graph-visualization software. This allowed journalists across the globe to undertake collaborative investigative work. The documents were released by the consortium on 5 November 2017.