Forum Sirius

Forum Sirius, also known by its alias, is a ticketing software provider headquartered in France. The company develops and supplies ticketing solutions designed for cultural organisations such as theatres, museums, and concert venues. Its core product enables these institutions to manage ticket sales, customer registrations, and entry control through a unified platform. Operating from its French headquarters, Forum Sirius serves a client base that is primarily located within the French cultural sector.

The organisation states that it serves over 400 French cultural organisations, indicating a notable footprint within that niche market. In May 2024, a cyberattack compromised its ticketing software and exposed a database containing nearly six million records. The compromised data included user identifiers, names, addresses, phone numbers, and email addresses, while bank details were reportedly protected. Following the breach, the attackers reportedly offered to sell the stolen dataset for a set price.

Multiple partner venues that rely on Forum Sirius informed their customers that account passwords had also been compromised, prompting widespread password resets across the affected network. The incident was reported to France's data protection authority, triggering regulatory scrutiny. In response, the affected cultural organisations have been deploying technical safeguards and pursuing legal measures to mitigate the fallout. These events highlight Forum Sirius's specialization in handling large volumes of personal data for the cultural sector and its direct interaction with national data protection frameworks.