3 citations · 4 across the 4 of their papers we have counts for
6 papers · 1 filter
Age Verification in the Web -- Holy Grail to Control Access to Restricted Content
Wojciech Wodo, Maksymilian Gorski, Lucjan Hanzlik
Age verification before accessing restricted content is critical to protecting minors from exposure to harmful material such as pornography, gambling, violence, hateful speech, and…
Fast IDentity Online with Anonymous Credentials (FIDO-AC)
Wei-Zhu Yeoh, Michal Kepkowski, Gunnar Heide +2
Web authentication is a critical component of today's Internet and the digital world we interact with. The FIDO2 protocol enables users to leverage common devices to easily authent…
How Not to Handle Keys: Timing Attacks on FIDO Authenticator Privacy
Michal Kepkowski, Lucjan Hanzlik, Ian Wood +1
This paper presents a timing attack on the FIDO2 (Fast IDentity Online) authentication protocol that allows attackers to link user accounts stored in vulnerable authenticators, a s…
Trollthrottle -- Raising the Cost of Astroturfing
Ilkan Esiyok, Lucjan Hanzlik, Robert Kuennemann +2
Astroturfing, i.e., the fabrication of public discourse by private or state-controlled sponsors via the creation of fake online accounts, has become incredibly widespread in recent…
simTPM: User-centric TPM for Mobile Devices (Technical Report)
Dhiman Chakraborty, Lucjan Hanzlik, Sven Bugiel
Trusted Platform Modules are valuable building blocks for security solutions and have also been recognized as beneficial for security on mobile platforms, like smartphones and tabl…
MLCapsule: Guarded Offline Deployment of Machine Learning as a Service
Lucjan Hanzlik, Yang Zhang, Kathrin Grosse +4
With the widespread use of machine learning (ML) techniques, ML as a service has become increasingly popular. In this setting, an ML model resides on a server and users can query i…