Jiska Classen

Dr. Jiska Classen


jiska classen team pic mg


Telephone:+49 6151 16-25474

Fax:+49 6151 16-25471

Office: S2|20 – 215

Technische Universität Darmstadt
Department of Computer Science
Secure Mobile Networking Lab
Pankratiusstraße 2
64289 Darmstadt

Research Interests

  • IoT Ecosystem Security
  • Applied Wireless Security
  • Binary Patching

Short Biography

Jiska Classen received her B.Sc. in Applied Computer Science at Duale Hochschule Baden-Württemberg in 2012 in cooperation with a large internet service provider. She graduated from TU Darmstadt with a M.Sc. in IT-Security in 2014. She is a PhD student at the Secure Mobile Networking Lab (TU Darmstadt) since May 2014. Her main research interests are physical layer security with a focus on network design, as well as security of IoT ecosystems.


  • Coordination and teaching of course Wireless Network for Emergency Response
  • Selected lectures of course Physical Layer Security in Wireless Systems
  • Selected topics in Seminar “Security in Ad hoc, Sensor, and Mesh Networks (SWMN)”
  • Labs on Covert Channels and Signal Analyzer for Android


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Group by: Date | Item type | No grouping
Jump to: 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014
Number of items: 31.


Tillmanns, Jörn ; Classen, Jiska ; Rohrbach, Felix ; Hollick, Matthias (2020):
Firmware Insider: Bluetooth Randomness is Mostly Random.
14th USENIX Workshop on Offensive Technologies (WOOT 2020), virtual Conference, 11.08., [Conference item]

Putz, Florentin ; Álvarez, Flor ; Classen, Jiska (2020):
Acoustic Integrity Codes: Secure Device Pairing Using Short-Range Acoustic Communication.
S. 31-41, WiSec 2020: 13th ACM Conference on Security and Privacy in Wireless and Mobile Networks, virtual Conference, July 08.-10., ISBN 978-1-4503-8006-5,
DOI: 10.1145/3395351.3399420,
[Conference item]

Heinze, Dennis ; Classen, Jiska ; Rohrbach, Felix (2020):
MagicPairing: Apple’s Take on Securing Bluetooth Peripherals.
13th ACM Conference on Security and Privacy in Wireless and Mobile Networks, VIRTUAL, July 08.-10., 2020, DOI: 10.1145/3395351.3399343,
[Conference item]

Spörk, Michael ; Classen, Jiska ; Boano, Carlo Alberto ; Hollick, Matthias ; Römer, Kay (2020):
Improving the Reliability of Bluetooth Low Energy Connections.
Embedded Wireless Systems and Networks (EWSN), Lyon, France, 17.02.-19.02.2020, ISBN 978-0-9949886-4-5,
[Conference item]

Classen, Jiska ; Spörk, Michael ; Boano, Carlo Alberto ; Römer, Kay ; Hollick, Matthias (2020):
Analyzing Bluetooth Low Energy Connections on Off-the-Shelf Devices.
In: EWSN'20 : Proceedings of the 2020 International Conference on Embedded Wireless Systems and Networks, S. 184-185,
ACM, International Conference on Embedded Wireless Systems and Networks (EWSN 2020), Lyon, France, 17.02.-19.02.2020, ISBN 978-0-9949886-4-5,
[Conference item]

Classen, Jiska (2020):
Security and Privacy for IoT Ecosystems.
Darmstadt, Technische Universität,
DOI: 10.25534/tuprints-00011422,
[PhD thesis]


Ullrich, Fabian ; Classen, Jiska ; Eger, Johannes ; Hollick, Matthias (2019):
Vacuums in the Cloud: Analyzing Security in a Hardened IoT Ecosystem.
Santa Clara, CA, USENIX Association, 13th USENIX Workshop on Offensive Technologies (WOOT 19), 12.08.2019, [Conference item]

Ullrich, Fabian ; Classen, Jiska (2019):
Vacuum Cleaning Security—Pinky and the Brain Edition.
DEF CON 27, Las Vegas, [Other]

Mantz, Dennis ; Classen, Jiska ; Schulz, Matthias ; Hollick, Matthias (2019):
InternalBlue - Bluetooth Binary Patching and Experimentation Framework.
The 17th Annual International Conference on Mobile Systems, Applications, and Services (MobiSys ’19), Seoul, South Korea, June 17.-21., 2019, DOI: 10.1145/3307334.3326089,
[Conference item]

Mantz, Dennis ; Classen, Jiska (2019):
Reversing and Exploiting Broadcom Bluetooth.
Montreal, REcon 2019, 29.06.2019, [Conference item]

Classen, Jiska ; Hollick, Matthias (2019):
Inside Job: Diagnosing Bluetooth Lower Layers Using Off-the-Shelf Devices.
12th ACM Conference on Security and Privacy in Wireless and Mobile Networks (WiSec'19), Miami, FL, USA, May 15.-17., 2019, DOI: 10.1145/3317549.3319727,
[Conference item]

Meister, Richard ; Classen, Jiska ; Saud, Muhammad Saad ; Katz, Marcos ; Hollick, Matthias (2019):
Practical VLC to WiFi Handover Mechanisms.
In: Proceedings of the 2019 International Conference on Embedded Wireless Systems and Networks, S. 324-329,
Junction Publishing, EWSN'19-International Conference on Embedded Wireless Systems and Networks, Beijing, China, February 25.-27., ISBN 978-0-9949886-3-8,
[Conference item]


Classen, Jiska ; Mantz, Dennis (2018):
Dissecting Broadcom Bluetooth.
Leipzig, Chaos Communication Congress,

Classen, Jiska (2018):
Pinky & Brain are taking over the world with vacuum cleaners.
Darmstadt, MRMCD2018,

Classen, Jiska ; Wegemer, Daniel (2018):
Fitbit Firmware Hacking.

Classen, Jiska ; Wegemer, Daniel ; Patras, Paul ; Spink, Tom ; Hollick, Matthias (2018):
Anatomy of a Vulnerable Fitness Tracking System: Dissecting the Fitbit Cloud, App, and Firmware.
In: PACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT),
ACM, [Conference item]


Classen, Jiska ; Wegemer, Daniel (2017):
Doping your Fitbit.
Leipzig, 34th Chaos Communication Congress, DOI: 10.5446/34791,
[Conference item]

Fereidooni, Hossein ; Classen, Jiska ; Spink, Tom ; Patras, Paul ; Miettinen, Markus ; Sadeghi, Ahmad-Reza ; Hollick, Matthias ; Conti, Mauro (2017):
Breaking Fitness Records without Moving: Reverse Engineering and Spoofing Fitbit.
In: Proceedings of the 20th International Symposium on Research in Attacks, Intrusions and Defenses (RAID),
Atlanta, Georgia, USA, [Conference item]

Chen, Joe ; Steinmetzer, Daniel ; Classen, Jiska ; Knightly, Edward ; Hollick, Matthias (2017):
Pseudo Lateration: Millimeter-Wave Localization Using a Single RF Chain.
[Conference item]


Classen, Jiska ; Steinmetzer, Daniel ; Hollick, Matthias (2016):
Opportunities and Pitfalls in Securing Visible Light Communication on the Physical Layer.
In: 3rd ACM Workshop on Visible Light Communication Systems, [Article]

Pfeiffer, Martin ; Kwiotek, Jan-Pascal ; Classen, Jiska ; Klose, Robin ; Hollick, Matthias (2016):
Analyzing TETRA Location Privacy and Network Availability.
In: SPSM '16, S. 117-122, New York, NY, USA, ACM, 6th Workshop on Security and Privacy in Smartphones and Mobile Devices, Vienna, Austria, DOI: 10.1145/2994459.2994463,
[Conference item]

Classen, Jiska (2016):
Software Defined Radio – Open Source Wireless Hacking.

Steinmetzer, Daniel ; Classen, Jiska ; Hollick, Matthias (2016):
mmTrace: Modeling Millimeter-wave Indoor Propagation with Image-based Ray-tracing.
In: Millimeter-wave Networking Workshop (mmNet 2016), [Article]

Steinmetzer, Daniel ; Classen, Jiska ; Hollick, Matthias (2016):
Exploring Millimeter-Wave Network Scenarios with Ray-tracing based Simulations in mmTrace.
In: IEEE Infocom 2016 Poster Presentation (Infocom'16 Posters),
San Francisco, [Conference item]


Classen, Jiska (2015):
Building and Breaking Wireless Security.

Steinmetzer, Daniel ; Chen, Joe ; Classen, Jiska ; Knightly, Edward ; Hollick, Matthias (2015):
Eavesdropping with Periscopes: Experimental Security Analysis of Highly Directional Millimeter Waves.
In: IEEE Conference on Communications and Network Security 2015 (CNS),
Florence, DOI: 10.1109/CNS.2015.7346844,
[Conference item]

Classen, Jiska ; Chen, Joe ; Steinmetzer, Daniel ; Hollick, Matthias ; Knightly, Edward (2015):
The Spy Next Door: Eavesdropping on High Throughput Visible Light Communications.
In: 2nd ACM Workshop on Visible Light Communication Systems, S. 6,
Paris, France, [Conference item]

Classen, Jiska ; Schulz, Matthias ; Hollick, Matthias (2015):
Practical Covert Channels for WiFi Systems.
In: IEEE Conference on Communications and Network Security (CNS), S. 8,
Florence, Italy, [Conference item]

Classen, Jiska ; Braun, Johannes ; Volk, Florian ; Hollick, Matthias ; Buchmann, Johannes ; Mühlhäuser, Max (2015):
A Distributed Reputation System for Certification Authority Trust Management.
In: 14th IEEE International Conference on Trust, Security and Privacy in Computing and Communications (IEEE UbiSafe Symposium),
Helsinki, Finland, [Conference item]


Braun, Johannes ; Volk, Florian ; Classen, Jiska ; Buchmann, Johannes ; Mühlhäuser, Max (2014):
CA Trust Management for the Web PKI.
In: IOS Press: Journal of Computer Security, 22(6), 2014, S. 913-959 (2014). [Article]

Classen, Jiska (2014):
Reputation Systems for Trust Management in the Web PKI.
Darmstadt, Technische Universität, [Master thesis]

This list was generated on Mon May 17 06:58:01 2021 CEST.

Open Theses

Currently no items available.

Ongoing Theses

Supervised Theses

  • 2020/02/14

    Bluetooth Low Energy Sniffing

  • 2019/05/14

    PowerPC Binary Patching and dissecting of TETRA Base Station

  • 2019/04/17

    Analyzing Firmware and Cloud Security of a Premium IoT Ecosystem

  • 2019/02/26

    A security researcher’s guide to the Fitbit Ionic smartwatch

  • 2018/12/06

    Sicherheit funkferngesteuerter Rangierlokomotiven

  • 2018/07/26

    InternalBlue - A Bluetooth Experimentation Framework Based on Mobile Device Reverse Engineering

  • 2018/05/22

    Analyzing and Evaluating Interface, Communication, and Web Security in Productive IoT Systems

  • 2018/02/07

    Angriffsanalyse einer TETRA-Basisstation

  • 2017/11/30

    Improving a Linux Device Driver for Visible Light Communication

  • 2017/10/26

    Implementierung des unteren MAC-Layers für die OpenVLC-Hardware

  • 2017/10/20

    Implementation of a physical layer for visible light communication using the OpenVLC platform

  • 2017/10/15

    Security Analysis and Firmware Modification of Fitbit Fitness Trackers

  • 2017/07/14

    Absicherung von SCADA-Protokollen

  • 2017/06/02

    Tetra Security Analysis by Fuzzing

  • 2016/06/01

    TETRA Fuzzing

  • 2016/04/04

    Location Privacy of Digital Trunked Radio

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