8,220 users affected - claimed data leak at Brouillon de culture

On 4 March 2026, Au Brouillon de Culture — a long-running bookshop and second-hand bookseller ("À la Sorbonne") on rue de l'Hôtel des Postes in Nice, France, which also retails books through its online store — was named in a leak claim involving roughly 8,220 customer accounts.

According to the disclosure tracked by fuitesinfos.fr, a threat actor publishing on a data-leak channel advertised the exposure of about 8,220 user accounts tied to the bookshop's customer base, most likely those registered through its online ordering site. The claim characterises the data as account records, consistent with a compromise of the web store's customer database.

The exposed data, as advertised, is understood to consist of:

• Customer account records (approximately 8,220 users)

The breach is an attacker-side claim that has not been confirmed by the bookshop or by an independent investigation, and the precise attack vector remains undetermined. There is no public statement from the business or a data-protection authority on record at this time, so the status of any notification or remediation is unknown.