Bild: Katrin Glückler
Jochen Schäfer (he/him)
PhD Student
University of Mannheim
School of Business Informatics and Mathematics
B6, 26 – Room B2.18
68159 Mannheim
School of Business Informatics and Mathematics
B6, 26 – Room B2.18
68159 Mannheim
Phone: +49 621 181-2739
Fax: +49 621 181-2351
E-mail: jochen.schaeferuni-mannheim.de
Web: www.wim.uni-mannheim.de/ths/people/academic-staff/jochen-schaefer
ORCID iD: 0009-0008-4396-6186
Fax: +49 621 181-2351
E-mail: jochen.schaeferuni-mannheim.de
Web: www.wim.uni-mannheim.de/ths/people/academic-staff/jochen-schaefer
ORCID iD: 0009-0008-4396-6186
PGP-Key
Teaching
- HWS 2020 – Praktische Informatik I - Tutorial
- FSS 2021 – Team Project: Cryptocurrency Forensics
- HWS 2021 – Praktische Informatik I – Exercise
- HWS 2021 – Team Project: Cryptocurrency Forensics
- FSS 2022 – Team Project: Cryptocurrency Forensics
- HWS 2022 – Praktische Informatik I – Exercise
- HWS 2022 – Blockchain Security – Exercise
- FSS 2023 – Selected Topics in IT-Security – Exercise
- HWS 2023 – Praktische Informatik I – Exercise
- HWS 2023 – Blockchain Security – Exercise
- HWS 2024 – Blockchain Security – Exercise
- FSS 2025 – Team Project: Building a blockchain-based payment system for coffeemakers
- Supervision of theses
Scientific Publications
- Sabrina Navratil, Samuel Wissel, Christian Müller, Jochen Schäfer, Frederik Armknecht, Marina Friedrich-Schieback, Stefan Münzer:
“Code in the head: cognitive activation and individualized support through digital learning with informative performance feedback”
GEBF 2025, 12. Tagung der Gesellschaft für Empirische Bildungsforschung, Mannheim, Germany
- Jochen Schäfer, Frederik Armknecht:
“Novel Attacks Against Non‐Interactive PPRL”
38. GI Kryptotag, Hamburg, Germany
- Alexander Brechlin, Jochen Schäfer, Frederik Armknecht:
“Buy Crypto, Sell Privacy: An Extended Investigation of the Cryptocurrency Exchange Evonax”
International Journal of Network Management Volume 35 Issue 1, Special Issue: Best Papers of CryptoEx 2024, Wiley, 2025
doi: https://doi.org/10.1002/nem.2325
- Jochen Schäfer, Frederik Armknecht, Youzhe Heng:
“R+R: Revisiting Graph Matching Attacks on Privacy-Preserving Record Linkage”
2024 Annual Computer Security Applications Conference (ACSAC), Honolulu, Hawaii, USA, 2024
doi: https://doi.org/10.1109/ACSAC63791.2024.00064
- Alexander Brechlin, Jochen Schäfer, Frederik Armknecht:
“Buy Crypto, Sell Privacy: Investigating the Cryptocurrency Exchange Evonax”
CryptoEx at 2024 IEEE International Conference on Blockchain and Cryptocurrency (ICBC), Dublin, Ireland, 2024
doi: https://doi.org/10.1109/ICBC59979.2024.10634385
- Jochen Schäfer, Christian Müller, Frederik Armknecht:
“0 Sterne für die Sicherheit: Wie Kundenbewertungen die Bitcoin-Adressen von Darknet-Händlern verraten.”
GI Sicherheit 2024, Worms, Germany, 2024
doi: https://doi.org/10.18420/sicherheit2024_010
- Jochen Schäfer, Christian Müller, Frederik Armknecht:
“If You Like Me, Please Don't “Like” Me: Inferring Vendor Bitcoin Addresses From Positive Reviews.”
Privacy Enhancing Technologies Symposium 2022 (PETS), Sydney, Australia, 2022
doi: https://doi.org/10.2478/popets-2022-0022
Other Publications
- SWR/
Tagesschau: Citrix-Sicherheitslücke – Gefahr für Tausende Unternehmen, 2020 - NDR/
funk: Bitcoin: Wohin führt die Spur illegaler Geschäfte? | STRG_F, 2021