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= Critical Information Infrastructures=

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Critical information infrastructures are sociotechnical systems comprising essential software components and information systems with pivotal impact on individuals, organizations, governments, economies, and society. We work on research challenges concerned with the design, development, and evaluation of reliable, secure, and purposeful software and information systems. Our research features a strong domain focus, in particular, on internet and health care industries as well as on the industry-specific application of secure and trustworthy AI models. The principal goal of our research is theorizing on and designing the applications and methods required for creation and innovation of sociotechnical systems with auspicious value propositions. In our studies, we rigorously employ a variety of interdisciplinary methods and build on theories from information systems and related disciplines. Our work accounts for the multifaceted use contexts of information and communication technologies with research on human behavior affecting critical information infrastructures and vice versa. This enables us to rigorously generate strong theoretical insights while simultaneously producing research outputs of relevance to practical audiences.

Our main research contexts are reliable, secure, and purposeful software and information systems within the scope of critical infrastructures, innovative health IT applications, cloud computing services, blockchain technologies, trustworthy AI, continuous, DLT-based auditing of AI systems, and auditing/certification of IT in general.

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Latest News
2022-05-01: Prof. Sunyaev appointed as spokesperson of Department of Information Systems of the German Informatics Society
2021-02-22: First cii Blockchain Hackathon
2021-02-16: Best Theory Paper in Track @ ICIS 2020
2021-01-08: Best Paper Award @ HICSS-54 for cii Research Group
2020-12-14: Paper and Awards at the Pre-ICIS Workshop on Information Security and Privacy (WISP 2020)
2020-10-28: New Article published in IEEE Access
2020-10-19: New Article published in JMIR mhealth and uhealth!
2020-10-16: Four papers accepted at the Hawaii International Conference on System Sciences (HICSS) 2021
2020-10-05: New Article published in the Electronic Markets Journal
2020-10-01: Exclusive Internships at Yale University in 2021!
2020-09-30: Two papers accepted at the International Conference on Information Systems (ICIS) 2020
2020-09-17: New DFG Project to Research Digitization in Health Care (KIT)
2020-09-10: New Article published in the Decision Sciences Journal
2020-09-07: Surveys on privacy in mHealth Apps and the Corona-Warn-App in the PANDIA project
2020-09-02: Congratulations to Jens Lansing for his successful doctoral examination
2020-07-14: AI meets Distributed Ledger: building marketplaces, sharing data and breaking silos – Interview with Prof. Ali Sunyaev
2020-07-13: cii Research Group at conference "Forum Privatheit" 2020
2020-06-29: First Articles Mention the DaWID Project
2020-06-08: GAIA-X publishes new documents on the status quo of the project - The research group CII contributed to the Technical Architecture
2020-06-03: Faculty Teaching Award 2020 - Prof. Ali Sunyaev receives the teaching award of the KIT Faculty Economics and Management.
2020-06-02: New article published in the journal ACM Computing Surveys!
2020-05-05: New article published in the journal ACM Transactions on Management Information Systems!
2020-05-04: New article published in the journal Electronic Commerce Research!
2020-04-22: Kick-off of the project BloG3 - Blockchain-based health data management for holistic health profiles
2020-04-01: New Article Published in the Journal IEEE Access
2020-03-26: PANDIA: “Platform for the analysis of privacy notices of interactive assistance systems in the health care domain—Consumer-centered privacy communication”
2020-03-17: Cii Research Group at the 15th International Business Informatics Congress
2020-03-04: Hands-On: Experience "Blockchain and Distributed Ledger Technology" in Our New Seminar
2020-02-26: Project Kick-Off "DaWID: Data-Centered Value Creation"
2020-02-25: New textbook "Internet Computing" published
2020-01-29: Annual report 2019 of the Critical Information Infrastructures research group published
2020-01-22: New Article Published in the Journal of Medical Internet Research (JMIR)
2020-01-21: cii Research Group at the 53rd Hawaii International Conference on System Sciences (HICSS)
2020-01-07: "AUDITOR" will be further developed into a European data protection certification
2019-12-03: Prof. Sunyaev Interviewed by it-daily: Trust is good, control is better
2019-11-18: The research group of Prof. Sunyaev participates in the project "GAIA-X" of the BMWi
2019-11-18: New Article Published in the Journal of Strategic Information Systems (JSIS)
2019-11-14: An easy to understand introduction to Blockchain and Distributed Ledger Technology published
2019-11-12: The 35th AIK Symposium „Blockchain - Proof-of-Worth“
2019-10-15: Exclusive Internships at Yale University in 2020!
2019-09-30: Two papers accepted at the International Conference on Information Systems (ICIS) 2019

» News archive

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Course Term
Applied Informatics - Principles of Internet Computing SoSe 20
Emerging Trends in Digital Health (Master) SoSe 20
Emerging Trends in Digital Health (Bachelor) SoSe 20
Emerging Trends in Internet Technologies (Master) SoSe 20
Emerging Trends in Internet Technologies (Bachelor) SoSe 20
Praktikum Entwicklung Soziotechnischer Informationssysteme (Master) SoSe 20
Praktikum Entwicklung Soziotechnischer Informationssysteme (Bachelor) SoSe 20
Praktikum Blockchain und Distributed Ledger Technology (Master) SoSe 20
Praktikum Blockchain und Distributed Ledger Technology (Bachelor) SoSe 20

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Open Positions: Student Assistants / Tutors

Research Group
Postdoctoral Researchers
PhD Students
Student Assistants

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Active Projects

Our research is funded by

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AUDITOR Logo.jpg European Cloud Service Data Protection Certification
The objective of the research project “European Cloud Service Data Protection Certification” (AUDITOR) is the conception, exemplary implementation and testing of an enduring EU-wide data protection certification for cloud services. As project leader, we engage in every project activity to achieve this goal.
Blog3-logo.png BloG3 – Blockchain-based health data management for holistic health profiles
The BloG3 project aims to develop and deploy a blockchain-based platform for the management of health data in aftercare. The platform enables patients to manage their data and give doctors access to them via an app. The platform will be used and evaluated at the Charité in Berlin and the Pflegewerk Berlin.
COOLedger – A COnfiguration toOL for Distributed Ledgers
The goal of the research project is to support the selection and configuration of a suitable distributed ledger through a model that identifies the dependencies between DLT characteristics and presents them in an understandable way. The model will be embedded in a process and implemented as software, which facilitates finding the suitable configuration of distributed ledgers for specific applications.
DaWID-Logo.png DaWID: Data-Centered Value Creation
The aim of the DaWID project is the development of a metaplatform building on the Industrial Data Space of the Fraunhofer-Society and the Data Intelligence Hub of the Deutsche Telekom AG. The platform will provide enhanced monetization capabilities for the data of citizens and companies in the C2B2B context. The respect of the data sovereignty of individuals and companies will be ensured in this regard.
digilog@bw − Digitalisierung im Dialog
The aim of "digilog@bw" is to identify the influence of digitisation on people and the resulting social changes and to analyse them in an interdisciplinary approach in order to lay the foundations for shaping digital change in a technically and politically positive way for the benefit of people.
Dlt4life logo.png Distributed Ledger Technology for Life Sciences
The aim of the research project “Distributed Ledger Technology for Life Sciences” (DLT4Life) is to develop a secure and privacy preserving DLT-based infrastructure for data exchange in the life sciences. The research project is part of the Helmholtz Information & Data Science School for Health (HIDSS4Health) and is carried out in cooperation with the German Cancer Research Center (DKFZ) in Heidelberg.
Epill.png ePill - electronic Patient Information Leaflets
ePill (Electronic Patient Information LeafLets) is a web application that offers patient-friendly aggregation and refinement of information in patient information leaflets. ePill avoids drawbacks of patient information leaflets regarding readability, comprehensibility, and content. Besides improving the presentation of information in patient information leaflets, ePill can contribute to the solution of the prevalent problem of medication compliance by alleviating the process of gaining knowledge about the pharmaceuticals one is taking.
Gi fachgruppe dh.jpg GI Special Interest Group Digital Health
The interdisciplinary special interest group Digital Health will examine current issues relating to the use of IT in healthcare and medicine from a variety of perspectives. The special interest group is to serve as a communication platform for stakeholders in the field of digital health. The goal is to offer researchers, practitioners and policymakers a central point of contact for the exchange and consolidation of research work and practical issues.
Ngcert.png Project Next Generation Certification (NGCert)
The project “Next Generation Certification” (NGCert) focuses on research and development of dynamic certifications for cloud services, which enable auditors to continuously and (semi) automatically audit and monitor crucial parameters of cloud services. In this context, we develop metrics, methods, and design guidelines for continuous monitoring and (semi) automatic certification of cloud services.
Peerlogo.png PEER - Open Access Publication Platform for Student Dissertations
The open dissertations library – PEER – will provide an innovative open access platform for publishing excellent student dissertations, like Bachelor, Master, and Diploma theses. Following the open knowledge idea, which is to allow anyone to freely access, use, modify, and share knowledge, PEER will make the publication of excellent student theses much easier for students and universities as well as provide an open and highly visible platform revealing the real worth of Bachelor, Master, and Diploma theses. PEER will utilize the innovative potential of distributed ledger technology to archive the system’s three primary design goals: ease-of-use, openness, and content excellence.
Automatedclompliance.png Security & Compliance Automation
The project 'Security & Compliance Automation' deals with the automation of compliance assessment processes in the context of cloud services. The research group cii is working together with SAP SE to deal with the challenging and ever-increasing amount of requirements that cloud services have to fulfil.
Toward better Development of Applications on DLT
Distributed Ledger Technology (DLT) is promising to innovate collaborative inter-organizational work using applications on DLT. However, such applications come with new challenges regarding software architecture and, in particular, smart contract development. Various incidents such as The DAO hack or the Parity hack have shown the devastating impact of flawed smart contracts or applications on DLT. In order to support developers to overcome extant challenges in the development of applications on DLT, we aim to derive software design patterns from existing best practices in the development of applications on DLT.
TB-Logo.png Trusted Blockchain
Our research project „Trusted Blockchain“ aims to develop an innovative certification for distributed ledger technologies to reduce market uncertainty and support the development of trusted and secure technologies.
Unblackboxing.png Unblackboxing IT Certifications
The project goal of “Unblackboxing IT Certifications” is to explore IT certifications' impact on customer and e-vendor perceptions. Within the research context of electronic markets, we investigate the research question of how web assurance seals are perceived by both customers and e-vendors. The project results contribute to gaining a deep and fundamental understanding of IT certifications' effectiveness.

Completed Projects

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Cloud Computing Services for Healthcare Organizations


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IKT-Landschaft im Jahre 2020


ilustre Lehre


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Payment with Data


Security & Compliance Automation

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Standardisierungsarbeit im DIN



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Wissenschaftlich-Technische Zusammenarbeit (WTZ)

Research and Practice Partners (selection)

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