Explanipedia

Content, Nudges and Incentives: A Study on the Effectiveness and Perception of Embedded Phishing Training Open

Daniele Lain, Timothy Stoltzfus Jost, Siniša Matetić, Kari Kostiainen, Srđjan Čapkun · 2024

A common form of phishing training in organizations is the use of simulated\nphishing emails to test employees' susceptibility to phishing attacks, and the\nimmediate delivery of training material to those who fail the test. This\nwidespre…

Bitcontracts: Supporting Smart Contracts in Legacy Blockchains Open

Karl Wüst, Loris Diana, Kari Kostiainen, Ghassan Karame, Siniša Matetić , et al. · 2021

Computer science Business

In this paper, our main goal is to design a solution that adds expressive smart contract execution support as a subsystem to existing legacy blockchain systems.The primary usage of our solution is to enhance systems like Bitcoin that have …

ACE: Asynchronous and Concurrent Execution of Complex Smart Contracts Open

Karl Wüst, Siniša Matetić, Silvan Egli, Kari Kostiainen, Srđjan Čapkun · 2020

Computer science Business

Smart contracts are programmable, decentralized and transparent financial applications. Because smart contract platforms typically support Turing-complete programming languages, such systems are often said to enable arbitrary applications.…

TEEvil: Identity Lease via Trusted Execution Environments Open

Ivan Puddu, Daniele Lain, Moritz Schneider, Elizaveta Tretiakova, Siniša Matetić , et al. · 2019

Computer science Business Political science

We investigate identity lease, a new type of service in which users lease their identities to third parties by providing them with full or restricted access to their online accounts or credentials. We discuss how identity lease could be ab…

Secure Brokered Delegation Through DelegaTEE Open

Moritz Schneider, Siniša Matetić, Ari Juels, Andrew Miller, Srđjan Čapkun · 2019

Business Computer science Political science

ISSN:1540-7993

DelegaTEE: Brokered Delegation Using Trusted Execution Environments Open

Siniša Matetić, Moritz Schneider, Andrew Miller, Ari Juels, Srđjan Čapkun · 2018

Computer science Political science Biology

We introduce a new concept called brokered delegation. Brokered delegation allows users to flexibly delegate credentials and rights for a range of service providers to other users and third parties. We explore how brokered delegation can b…

ROTE: Rollback Protection for Trusted Execution Open

Siniša Matetić, Mansoor Ahmed, Kari Kostiainen, Aritra Dhar, David Sommer , et al. · 2017

Computer science

Security architectures such as Intel SGX need protection against rollback attacks, where the adversary violates the integrity of a protected application state by re-playing old persistently stored data or by starting multiple application i…

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