Xavier Niel

Xavier Niel was born into a middle-class family in the Val-de-Marne department, southeast of Paris. His family lived in Créteil, in the Mont-Mesly neighborhood. His father worked as a legal advisor for a pharmaceutical company, and his mother was an accountant.

Mont-Mesly is a large postwar public housing development built from the late 1950s on a hill in western Créteil. It consists of several hundred HLM (habitation à loyer modéré, or subsidized public housing) buildings and is now designated as a quartier prioritaire de la politique de la ville, the French government's classification for disadvantaged urban neighborhoods targeted for public investment. In his 2024 memoir, Niel described the area during his childhood as a neighborhood undergoing rapid change, with thousands of people arriving from across France and abroad over a short period. He recalled an environment marked by genuine social diversity and integration that generally worked, although not without tensions. He also described classmates bringing firearms to school, taken from their homes and shown to friends during breaks, as well as knife fights among teenagers. After he returned home covered in blood following a fight, his parents transferred him to a private Catholic school.

Niel attended Allezard Elementary School and Louis Pasteur Middle School in Créteil before transferring to Collège Maillé and later Lycée Saint-Michel-de-Picpus, a private Catholic school in Paris that attracted students from a wide range of religious and social backgrounds. He has described himself as an average student who was, in his own words, "bad at nothing and good at nothing." After graduating from high school, he briefly attended college before dropping out in 1987.

When he was 14, his father gave him a Sinclair ZX81 home computer, a British machine that sold for about 700 French francs at the time. Niel has described the gift as the turning point in his career. Every week, his father would stop at a neighborhood coffeehouse and bring home a copy of Hebdogiciel, a weekly computer newspaper that published programs readers could type into their own computers. Niel taught himself programming by copying those listings into his ZX81. At a time when relatively few people in France knew how to write software, he soon began earning money by developing server software for companies, including newspaper publishers. While still in high school, he spent his evenings, weekends, and, by his own account, many nights writing software before returning to class the next morning, earning his first income as a programmer.

Early businesses

In 1987, after dropping out of college at the age of 19, Niel founded his first company, which operated services on Minitel, the French videotex network that predated the World Wide Web. The company specialized in adult chat services. To operate legally, Niel acquired publishing licenses, a regulatory framework originally intended for newspapers and magazines, and used them to become a registered Minitel service provider. He has said that the business made him a millionaire, in today's euros and dollars, by the age of 24.

During the same period, Niel and businessman Fernand Develter invested in a number of Paris-based peep-show establishments. Some of these businesses later became the subject of criminal investigations, and certain managers were convicted on charges related to procuring. According to press reports, the investigations concerned activities involving direct physical contact between clients and sex workers. These proceedings did not target Niel personally, although his investments in the sector attracted media attention.

Canal+ hacking and intelligence work

As a teenager, Niel hacked Canal+ television decoders. After being identified by police, he was summoned to the French Ministry of the Interior rather than prosecuted. According to the investigative biography Xavier Niel: La voie du pirate, officers from the Direction de la surveillance du territoire, France's domestic intelligence agency at the time, offered him a choice between criminal prosecution and cooperation. He chose the latter and spent several months working with the agency, helping monitor Soviet activity on French telecommunications networks.

During the same period, Niel gained access to the Radiocom 2000 mobile telephone network, then used by French government officials, and obtained the phone numbers assigned to 84 official vehicles, including one used by President François Mitterrand. Le Monde reported the incident at the time, identifying the hacker only as a 20-year-old computer specialist. Niel later confirmed publicly that he was responsible.

Niel's domestic partner is French businesswoman Delphine Arnault, who is a director and executive vice president at Louis Vuitton, and the chairwoman and chief executive officer of Dior. She is the daughter of Bernard Arnault. Niel has a son (Joseph, born in 2016) and a daughter (Élisa, born in 2012) with her and two sons (Jules and John, born in 2000 and 2002) from a previous relationship, and lives in the 16th arrondissement of Paris.

Since 2013, he has also owned a five star hotel in French ski resort Courchevel. In 2016, he acquired the Hôtel Lambert an hôtel particulier from 1640 on the Île Saint-Louis, in the 4th arrondissement of Paris for more than $226 million, to be reportedly used as the headquarters for Niel's cultural foundation.

In May 2004, Niel was indicted and detained for a month at the La Santé Prison for alleged procuring and misuse of company assets, which occurred in several sex shops in which he was a shareholder. In August 2005, a nolle prosequi was pronounced for the procuring part of his indictment, while in October 2006, he was given a two years suspended prison sentence for the misuse of company assets.