89 citations · 191 across the 14 of their papers we have counts for
17 papers
Landscape More Secure Than Portrait? Zooming Into the Directionality of Digital Images With Security Implications
Benedikt Lorch, Rainer Böhme
The orientation in which a source image is captured can affect the resulting security in downstream applications. One reason for this is that many state-of-the-art methods in media…
Anatomy of a High-Profile Data Breach: Dissecting the Aftermath of a Crypto-Wallet Case
Svetlana Abramova, Rainer Böhme
Media reports show an alarming increase of data breaches at providers of cybersecurity products and services. Since the exposed records may reveal security-relevant data, such inci…
Parallel Proof-of-Work with Concrete Bounds
Patrik Keller, Rainer Böhme
Authorization is challenging in distributed systems that cannot rely on the identification of nodes. Proof-of-work offers an alternative gate-keeping mechanism, but its probabilist…
Conflicting Privacy Preference Signals in the Wild
Maximilian Hils, Daniel W. Woods, Rainer Böhme
Privacy preference signals allow users to express preferences over how their personal data is processed. These signals become important in determining privacy outcomes when they re…
Who are the arbitrageurs? Empirical evidence from Bitcoin traders in the Mt. Gox exchange platform
Pietro Saggese, Alessandro Belmonte, Nicola Dimitri +2
We mine the leaked history of trades on Mt. Gox, the dominant Bitcoin exchange from 2011 to early 2014, to detect the triangular arbitrage activity conducted within the platform. T…
Privacy Preference Signals: Past, Present and Future
Maximilian Hils, Daniel W. Woods, Rainer Böhme
Privacy preference signals are digital representations of how users want their personal data to be processed. Such signals must be adopted by both the sender (users) and intended r…
iNNformant: Boundary Samples as Telltale Watermarks
Alexander Schlögl, Tobias Kupek, Rainer Böhme
Boundary samples are special inputs to artificial neural networks crafted to identify the execution environment used for inference by the resulting output label. The paper presents…
More Real than Real: A Study on Human Visual Perception of Synthetic Faces
Federica Lago, Cecilia Pasquini, Rainer Böhme +3
Deep fakes became extremely popular in the last years, also thanks to their increasing realism. Therefore, there is the need to measures human's ability to distinguish between real…
Forensicability of Deep Neural Network Inference Pipelines
Alexander Schlögl, Tobias Kupek, Rainer Böhme
We propose methods to infer properties of the execution environment of machine learning pipelines by tracing characteristic numerical deviations in observable outputs. Results from…
Collaborative Deanonymization
Patrik Keller, Martin Florian, Rainer Böhme
Privacy-seeking cryptocurrency users rely on anonymization techniques like CoinJoin and ring transactions. By using such technologies benign users potentially provide anonymity to…
Watching the Weak Link into Your Home: An Inspection and Monitoring Toolkit for TR-069
Maximilian Hils, Rainer Böhme
TR-069 is a standard for the remote management of end-user devices by service providers. Despite being implemented in nearly a billion devices, almost no research has been publishe…
Multiple Purposes, Multiple Problems: A User Study of Consent Dialogs after GDPR
Dominique Machuletz, Rainer Böhme
The European Union's General Data Protection Regulation (GDPR) requires websites to ask for consent to the use of cookies for \emph{specific purposes}. This enlarges the relevant d…
The Operational Cost of Ethereum Airdrops
Michael Fröwis, Rainer Böhme
Efficient transfers to many recipients present a host of issues on Ethereum. First, accounts are identified by long and incompressible constants. Second, these constants have to be…
HotPoW: Finality from Proof-of-Work Quorums
Patrik Keller, Rainer Böhme
A fundamental conflict of many proof-of-work systems is that they want to achieve inclusiveness and security at the same time. We analyze and resolve this conflict with a theory of…
Detecting Token Systems on Ethereum
Michael Fröwis, Andreas Fuchs, Rainer Böhme
We propose and compare two approaches to identify smart contracts as token systems by analyzing their public bytecode. The first approach symbolically executes the code in order to…
Herding Vulnerable Cats: A Statistical Approach to Disentangle Joint Responsibility for Web Security in Shared Hosting
Samaneh Tajalizadehkhoob, Tom van Goethem, Maciej Korczyński +5
Hosting providers play a key role in fighting web compromise, but their ability to prevent abuse is constrained by the security practices of their own customers. {\em Shared} hosti…
Rotten Apples or Bad Harvest? What We Are Measuring When We Are Measuring Abuse
Samaneh Tajalizadehkhoob, Rainer Böhme, Carlos Gañán +2
Internet security and technology policy research regularly uses technical indicators of abuse in order to identify culprits and to tailor mitigation strategies. As a major obstacle…