Heinrich-Heine-Universität Düsseldorf

Heinrich-Heine-Universität Düsseldorf (HHU) is a higher education institution located in Germany that provides teaching and research services to a diverse academic community. The university offers undergraduate and graduate degree programmes across various disciplines and supports scholarly research activities. It serves students, faculty, staff, alumni, and guests through its academic and administrative functions. HHU maintains an IT infrastructure that includes an e‑exam platform for conducting assessments and email systems for communication among its members. The institution is subject to German data protection regulations and reports security incidents to the relevant authorities. Its core mission revolves around education, knowledge creation, and community engagement within the regional and national higher education landscape.

The scale of HHU’s community is reflected in the figures disclosed during recent cybersecurity incidents. In March 2024, attackers accessed data concerning approximately 15,000 students from the e‑exam system and a second dataset containing names, email addresses, student IDs, majors, and staff affiliations for over 60,000 university members, including students, employees, alumni, and guests. Earlier incidents in 2023 involved the compromise of specific email accounts, leading to the exfiltration of entire mailboxes that included personal information. A 2017 incident revealed that 4,500 records of affiliates had resurfaced on the Darknet, of which 800 contained password hashes and 261 individuals still had active accounts with unchanged credentials. These numbers illustrate the size of the institution’s user base and the breadth of its digital services. HHU’s distinguishing attributes include its operation of an e‑exam platform and extensive email infrastructure, which are integral to its academic and administrative processes. The university’s response to breaches—promptly blocking compromised accounts, decommissioning affected systems, reporting to data protection authorities, and filing criminal complaints—demonstrates its adherence to legal and regulatory obligations. As a public university in Germany, HHU operates under state oversight and contributes to the regional education and research ecosystem.