The inspiration for this theme issue came from one of the biggest challenges that the journal has faced since its inception.On April 30, 2018, IJME published a submission from a person declaring affiliation to a respected research institution. The submission had been sent for external peer review and was revised before acceptance. Within a few days, the editor-in-chief learned that the author had used a false name and affiliation. The editors immediately removed the affiliation from the website, later replacing it with a notice that the author's name was a pseudonym. An investigation by the editor-in-chief led to the verification of the author's identity. It also confirmed that the author was competent to make the analysis published, and did face a "credible threat of harm", requiring protection of their identity.The article which was an analysis of a public database, requiring no special data access to be critiqued, remained on the journal website for some days. It was eventually retracted following extensive discussion among the members of the editorial board, on the grounds that "there should be zero tolerance to the author's deception, irrespective of the content of the paper" [1]. Its publication under a pseudonym had also received strong criticism in the academic community. The fact that the paper touched on the potential harm of a particular vaccine may have played a role in the vehemence of the critiques.The discussions at the time inspired the journal's editors to explore, with some targeted publications, the subject of authorship in academic publication. One of us has been involved in a related initiative in the past, which focused specifically on ghost and guest writing in scientific publications [2,3]. This topic also comes up in several essays in this theme issue on authorship, and is the specific focus of one; but this special issue also explores the broader context in which authorship controversies occur, and not only controversies associated with commercial interests.