Cyber Incident Victim: Théâtre de la Cité internationale
Date:
Jun 2024
Location:
France
Summary
A Paris-based theater experienced a cybersecurity incident stemming from a breach at its ticketing software provider, Forum Sirius. Attackers compromised production server credentials through the provider's systems, leading to unauthorized access to customer data including names, email addresses, phone numbers, physical addresses, and account passwords for online ticket purchasers. The organization confirmed the malicious attack resulted in loss of data confidentiality and initiated security resets while implementing necessary technical and legal measures. The incident has been declared resolved, with the affected software—used by approximately 400 cultural venues—exposing personal information from the theater's user base.
| CIA Posture | Motives | Tactics, Techniques & Procedures |
|---|---|---|
| Available to members | 1 motive | 2 techniques |
| Threat Actor | Type | Location |
|---|---|---|
| 1 actor | Available to members | Available to members |
Description
On June 28, 2024, Théâtre de la Cité internationale in Paris notified its users that its ticketing software provider, Forum Sirius, had suffered a cybersecurity incident resulting in unauthorized access to customer data. The theater learned from Forum Sirius that attackers stole credentials granting access to a production server, compromising the confidentiality of stored information. Personal data exposed included full names, email addresses, telephone numbers, and physical addresses of theater patrons. Users who created accounts on the online ticketing platform also had their login passwords compromised. The breach originated entirely within Forum Sirius’s systems, with the theater characterizing it as a malicious act rather than accidental exposure.

Forum Sirius, developer of the Sirius ticketing software used by approximately 400 cultural venues across France, confirmed the attack led to data exfiltration from the compromised server. Théâtre de la Cité internationale initiated password resets for affected accounts following discovery of the breach and stated it was implementing required technical and legal remediation measures. The theater declared the incident formally resolved, asserting no ongoing threat remained. No evidence suggested direct infiltration of the theater’s internal systems, as the breach was confined to the third-party provider’s infrastructure. Impact assessments focused exclusively on patron data managed through Forum Sirius’s ticketing platform rather than broader organizational assets.
