89 citations · 191 across the 14 of their papers we have counts for
9 papers · 1 filter
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…
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…
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…