I'm PhD candidate at DACS group of EEMCS faculty. I have a background in Internet measurements alongside past experiences in Software Development and Design.
Expertise
Computer Science
- Directory Access Protocol
- Security Practice
- Active Directory
- Configuration Data
- Query Information
- Authentication
- Network Operator
- Personal Information
Organisations
My research focuses on measurement and big-data-based approaches to studying the security posture of the Internet.
Publications
2025
Characterizing Hosting and Security Practices for Public-Facing LDAP Servers (2025)In 2025 21st International Conference on Network and Service Management (CNSM) (Accepted/In press). Luvizotto Cesar, G., Öndarö, G., Kaspereit, J., Ising, F., Schinzel, S., Jonker, M. & Holz, R.Characterizing Hosting and Security Practices for Public-Facing LDAP Servers (2025)[Dataset Types › Dataset]. Zenodo. Luvizotto Cesar, G., Öndarö, G., Kaspereit, J., Ising, F., Schinzel, S., Jonker, M. & Holz, R.https://doi.org/10.5281/zenodo.17019739
2024
LanDscAPe: Exploring LDAP Weaknesses and Data Leaks at Internet Scale (2024)In Proceedings of the 33rd USENIX Security Symposium (pp. 1225-1242). USENIX Association. Kaspereit, J., Öndarö, G., Cesar, G. L., Ebbers, S., Ising, F., Saatjohann, C., Jonker, M., Holz, R. & Schinzel, S.
Research profiles
I have a Master's Degree in Computer Science and Cybersecurity (2022) from Arizona State University (US). And a Bachelor's Degree in Computer Engineering (2014) from the University of São Paulo (BR).
Address
University of Twente
Zilverling (building no. 11), room 5110
Hallenweg 19
7522 NH Enschede
Netherlands
University of Twente
Zilverling 5110
P.O. Box 217
7500 AE Enschede
Netherlands
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