Publications

@InProceedings{buttner2025authentication,
    author="B{\"u}ttner, Andre and Gruschka, Nils and Broen, Sverre Stafsengen and P{\"o}hn, Daniela",
    editor="Coppens, Bart and Volckaert, Bruno and Naessens, Vincent and De Sutter, Bjorn",
    title="Authentication Inconsistencies Across Online Services: A Multi-Scenario Security Analysis",
    booktitle="Availability, Reliability and Security",
    year="2025",
    publisher="Springer Nature Switzerland",
    address="Cham",
    pages="166--180",
    isbn="978-3-032-00639-4",
    doi="10.1007/978-3-032-00639-4_10"
}

@InProceedings{buttner2025device,
    author={Andre Büttner and Nils Gruschka},
    title={Device-Bound vs. Synced Credentials: A Comparative Evaluation of Passkey Authentication},
    booktitle={Proceedings of the 11th International Conference on Information Systems Security and Privacy - Volume 2: ICISSP},
    year={2025},
    pages={651-659},
    publisher={SciTePress},
    organization={INSTICC},
    doi={10.5220/0013380600003899},
    isbn={978-989-758-735-1},
    issn={2184-4356}
}

@phdthesis{buttner2024phdthesis,
    author={Andre Büttner},
    title={Security of Evolving Authentication Technologies -- Multi-Factor Authentication, Passwordless Authentication, and Self-Sovereign Identity},
    school={University of Oslo},
    year= {2024},
    address={Oslo, Norway},
    month={September}  
}

@InProceedings{buttner2024evaluating,
    author={Andre Büttner and Nils Gruschka},
    title={Evaluating the Influence of Multi-Factor Authentication and Recovery Settings on the Security and Accessibility of User Accounts},
    booktitle={Proceedings of the 10th International Conference on Information Systems Security and Privacy - Volume 1: ICISSP},
    year={2024},
    pages={691-700},
    publisher={SciTePress},
    organization={INSTICC},
    doi={10.5220/0012319000003648},
    isbn={978-989-758-683-5}
}

@inproceedings{buttner2022protecting,
    author="B{\"u}ttner, Andre and Gruschka, Nils",
    editor="Saracino, Andrea and Mori, Paolo",
    title="Protecting FIDO Extensions Against Man-in-the-Middle Attacks",
    booktitle="Emerging Technologies for Authorization and Authentication",
    year="2023",
    publisher="Springer Nature Switzerland",
    address="Cham",
    pages="70--87",
    isbn="978-3-031-25467-3",
    doi="10.1007/978-3-031-25467-3_5"
}

@inproceedings{saebo2022where,
    title={Where There is No CISO},
    author={S{\ae}b{\o}, Johan Ivar and B{\"u}ttner, Andre and Gruschka, Nils and Jolliffe, Bob and McGee, Austin},
    booktitle={Freedom and Social Inclusion in a Connected World: 17th IFIP WG 9.4 International Conference on Implications of Information and Digital Technologies for Development, ICT4D 2022, Lima, Peru, May 25--27, 2022, Proceedings},
    year={2022},
    doi={10.1007/978-3-031-19429-0_12}
}

@inproceedings{buttner2021enhancing,
    title={Enhancing FIDO Transaction Confirmation with Structured Data Formats},
    author={B{\"u}ttner, Andre and Gruschka, Nils},
    booktitle={Norsk IKT-konferanse for forskning og utdanning},
    year="2021",
    url={https://www.ntnu.no/ojs/index.php/nikt/article/view/5506}
}

@InProceedings{buttner2021less,
    author="B{\"u}ttner, Andre and Nguyen, Hoai Viet and Gruschka, Nils and Lo Iacono, Luigi",
    editor="J{\o}sang, Audun and Futcher, Lynn and Hagen, Janne",
    title="Less is Often More: Header Whitelisting as Semantic Gap Mitigation in HTTP-Based Software Systems",
    booktitle="ICT Systems Security and Privacy Protection",
    year="2021",
    publisher="Springer International Publishing",
    address="Cham",
    pages="332--347",
    isbn="978-3-030-78120-0",
    doi="10.1007/978-3-030-78120-0_22"
}

@inproceedings{buttner2020influence,
    author={Büttner, Andre and Grünvogel, Stefan M. and Fuhrmann, Arnulph},
    booktitle={2020 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW)}, 
    title={The influence of text rotation, font and distance on legibility in VR}, 
    year={2020},
    pages={662-663},
    doi={10.1109/VRW50115.2020.00182}
}