About Me:

Hedgehog illustration

I'm a postdoc in the CoreSec group at TU Graz, where I did my PhD with Daniel Gruss. I work on low-level systems security, mainly side channels and microarchitectural attacks on CPUs, trusted execution environments like Intel TDX, and hypervisors. I also teach operating systems, system-level programming, and hypervisor development.

E-Mail: contact (at) responsible (dot) fyi

Publications

2026
FROST: Fingerprinting Remotely using OPFS-based SSD Timing
Hannes Weissteiner, Tobias Weiser, Roland Czerny, Sudheendra Raghav Neela, Fabian Rauscher, Jonas Juffinger, Daniel Gruss
DIMVA '26
Advancing CPU Security through Attack Discovery and Systematization - PhD Thesis
Fabian Rauscher
Assessors: Daniel Gruss, Jo Van Bulck
Graz University of Technology, May 2026
TELESCOPE: TDX Exploit Leaking Encrypted Data using Sibling Core Performance Counters
Fabian Rauscher, Hannes Weissteiner, Daniel Gruss
ASIA CCS '26
2025
WaitWatcher & WaitGuard: Detecting Flush-Based Cache Side-Channels through Spurious Wakeups
Lukas Lamster, Fabian Rauscher, Martin Unterguggenberger, Stefan Mangard
ESORICS '25
Verifying DRAM Addressing in Software
Martin Heckel, Florian Adamsky, Jonas Juffinger, Fabian Rauscher, Daniel Gruss
ESORICS '25
TDXploit: Novel Techniques for Single-Stepping and Cache Attacks on Intel TDX
Fabian Rauscher, Luca Wilke, Hannes Weissteiner, Thomas Eisenbarth, Daniel Gruss
Award: Distinguished Paper (Honorable Mention), CVE-2025-20613
USENIX Security Symposium '25 (AR: 17.1%)
TEEcorrelate: An Information-Preserving Defense against Performance-Counter Attacks on TEEs
Hannes Weissteiner, Fabian Rauscher, Robin Leander Schröder, Jonas Juffinger, Stefan Gast, Jan Wichelmann, Thomas Eisenbarth, Daniel Gruss
USENIX Security Symposium '25 (AR: 17.1%)
Systematic Analysis of Kernel Security Performance and Energy Costs
Fabian Rauscher, Benedict Herzog, Timo Hönig, Daniel Gruss
ASIA CCS '25 (AR: 20.4%)
A Systematic Evaluation of Novel and Existing Cache Side Channels
Fabian Rauscher, Carina Fiedler, Andreas Kogler, Daniel Gruss
NDSS '25 (AR: 16.5%)
Secret Spilling Drive: Leaking User Behavior through SSD Contention
Jonas Juffinger, Fabian Rauscher, Giuseppe La Manna, Daniel Gruss
NDSS '25 (AR: 16.5%)
2024
Cross-Core Interrupt Detection: Exploiting User and Virtualized IPIs
Fabian Rauscher, Daniel Gruss
CCS '24 (AR: 16.7%)
SnailLoad: Exploiting Remote Network Latency Measurements without JavaScript
Stefan Gast, Roland Czerny, Jonas Juffinger, Fabian Rauscher, Simone Franza, Daniel Gruss
CVE-2024-39920
USENIX Security Symposium '24 (AR: 18.3%)
Generic and Automated Drive-by GPU Cache Attacks from the Browser
Lukas Giner, Roland Czerny, Christoph Gruber, Fabian Rauscher, Andreas Kogler, Daniel De Almeida Braga, Daniel Gruss
Award: Best Paper
ASIA CCS '24 (AR: 22.1%)
IdleLeak: Exploiting Idle State Side Effects for Information Leakage
Fabian Rauscher, Andreas Kogler, Jonas Juffinger, Daniel Gruss
NDSS '24 (AR: 20.6%)
2023
DOPE: DOmain Protection Enforcement with PKS
Lukas Maar, Martin Schwarzl, Fabian Rauscher, Daniel Gruss, Stefan Mangard
ACSAC '23 (AR: 23.3%)
2022
GPU Cache Attacks - Master's Thesis
Fabian Rauscher
Graz University of Technology, November 2022