A contributor to numerous newspapers and magazines (including Cotidianul, 22, Sfera Politicii, Lettre International, and Dosarele Istoriei), he has been a member of the editorial staff for Dilema Veche since 1998, and an editor for Gazeta Sporturilor since 2003.

Born in Craiova to Iulian and Valeria, Cioroianu graduated from the University of Bucharest's Faculty of History in 1993, taking a Master's degree from Université Laval in Quebec (1997), and a PhD from the same institution (with the thesis The Myth, the Images and the Cult of the Leader in Communist Romania, 2002).

New methods and subjects proposed in the study of Romanian history became the center of controversy, which involved, among others, the textbook authored by Cioroianu and other University staff (Stelian Brezeanu, Florin Müller, Mihai Sorin Rădulescu, and Mihai Retegan) for Editura RAO; the book itself was criticized for not allocating a larger segment to the Romanian Revolution of 1989, and Cioroianu later explained that the editorial choice had been imposed by the level of trustworthy sources available at the time.

[3] Cioroianu was also highly critical of the methods used by adversaries of the textbooks during the overall debate, and publicly sided with the authors of arguably the most innovative manual, the one published by Editura Sigma.

[4][5] He repeatedly argued in favor of the authors (Sorin Mitu, Ovidiu Pecican, Lucia Copoeru, Virgiliu Ţârău, and Liviu Ţîrău), debating the issue with Marius Tucă and Octavian Paler during television appearances of that year.

Like other intellectuals chosen to take part in the campaign, each supporting a particular entry, Cioroianu narrated a short documentary film, and was subsequently involved in debates on the TVR 1 set (during two separate rounds of voting).

[13] The Romanian Academy's National Institute for the Study of Totalitarianism reacted to the program, accusing TVR 1 of mounting an overt campaign to denigrate Antonescu.