EKZ

EKZ operates as a library service provider that supplies a digital lending platform for public and academic libraries. The platform, known under the brand Onleihe, enables patrons to borrow electronic books, audiobooks, and videos. Users access the service through web portals or mobile applications to download or stream copy‑protected media. EKZ’s core function is to manage licensing, digital rights management, and distribution of these titles to participating libraries. The company’s headquarters are located in Germany, indicating a primary focus on the German‑language market. While specific figures on user base or number of partner libraries are not disclosed in the source material, the service is described as a central provider for digital lending in the region.

EKZ distinguishes itself by specializing in secure delivery of copy‑protected content, employing DRM systems to protect publishers’ rights while facilitating user access. The April 18 2022 cyberattack attributed to the LockBit ransomware group highlighted the platform’s exposure to sophisticated threats, as it disrupted the Onleihe service and caused deletion of protected media files. The incident led to temporary inaccessibility of websites and user forums, impaired streaming of audiobooks, videos, and eBooks, and forced users to delete and redownload affected titles. Despite the disruption, EKZ reported that core lending systems remained operational and that most services were restored after remediation efforts, albeit with lingering delays in order processing and invoicing. The provider cooperated with law enforcement and cybersecurity specialists, and the attackers later leaked stolen data, underscoring the incident’s broader impact on data privacy and trust. These events illustrate EKZ’s role as a critical infrastructure node in the digital library ecosystem and its need to maintain robust security and resilience measures.