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Porting of Chrome Zero Functionality to JavaScript Restrictor
Horňák, Peter ; Večeřa, Vojtěch (oponent) ; Polčák, Libor (vedoucí práce)
This thesis deals with improvements of security and privacy protection of web browser users by enhancing functionality of web browser extension called JavaScript Restrictor, which prototype was created in order to protect users on web. Within this thesis are analyzed security measures realized by tool Chrome Zero, which implements measures against microarchitectural attacks, attacks abusing high resolution timers and abuse of JavaScript engine. Thesis evaulates topicality of measures and integrates selected into JavaScript Restrictor. Measures are tested and evaluated from every day use point of view.
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Employing Network Intelligence for Deanonymization of Cryptocurrency Users
Horňák, Peter ; VUT), Marcel Marek (FIT (oponent) ; Grégr, Matěj (oponent) ; Jeřábek, Vladimír (oponent) ; Veselý, Vladimír (vedoucí práce)
The goal of this thesis is to analyze the Ethereum peer-to-peer network and nodes connected to the network. To collect the necessary data, we propose a monitoring system that can crawl the network, discovering new peers and collecting information about them on a regular basis. We implement version 4 and version 5 of Ethereum discovery protocol, to communicate with the network nodes. The platform is built on a microservices architecture for better scalability and modularity, while being encapsulated in Docker containers for easier deployment. The monitoring system collects and stores essential information such as IP addresses, port numbers, and asymmetric public keys in a time series database. For verification of results, the results are then compared with publicly available sources.
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Porting of Chrome Zero Functionality to JavaScript Restrictor
Horňák, Peter ; Večeřa, Vojtěch (oponent) ; Polčák, Libor (vedoucí práce)
This thesis deals with improvements of security and privacy protection of web browser users by enhancing functionality of web browser extension called JavaScript Restrictor, which prototype was created in order to protect users on web. Within this thesis are analyzed security measures realized by tool Chrome Zero, which implements measures against microarchitectural attacks, attacks abusing high resolution timers and abuse of JavaScript engine. Thesis evaulates topicality of measures and integrates selected into JavaScript Restrictor. Measures are tested and evaluated from every day use point of view.
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