National Repository of Grey Literature 76 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Behaviour-Based Identification of Network Devices
Polák, Michael Adam ; Holkovič, Martin (referee) ; Polčák, Libor (advisor)
Táto práca sa zaoberá problematikou identifikácie sieťových zariadení na základe ich chovania v sieti. S neustále sa zvyšujúcim počtom zariadení na sieti je neustále dôležitejšia schopnosť identifikovať zariadenia z bezpečnostných dôvodov. Táto práca ďalej pojednáva o základoch počítačových sietí a metódach, ktoré boli využívané v minulosti na identifikáciu sieťových zariadení. Následne sú popísané algoritmy využívané v strojovom učení a taktiež sú popísané ich výhody i nevýhody. Nakoniec, táto práca otestuje dva tradičné algorithmy strojového učenia a navrhuje dva nové prístupy na identifikáciu sieťových zariadení. Výsledný navrhovaný algoritmus v tejto práci dosahuje 89% presnosť identifikácii sieťových zariadení na reálnej dátovej sade s viac ako 10000 zariadeniami.
Detection of Suspicious Requests Made by Web Pages
Pohner, Pavel ; Burget, Radek (referee) ; Polčák, Libor (advisor)
The purpose of this thesis is to prevent websites located in public internet from accessing user's internal network through web browser. Acquired knowdledge about modern browser's security mechanism - same-origin policy and options of implementing the web browser extensions using WebExtensions, was used in the solution. Proposed solution is based on WebRequest API, which intercepts and modifies HTTP requests, and extends functionality of existing browser extension JavaScript Restrictor with the ability to detect and prevent the browser to be abused as a proxy for scanning and accessing user's internal network. The implemented solution was tested and accepted as a part of JavaScript Restrictor. The main benefit of this thesis is the protection from possible abusement of a web browser as a proxy, which is not present in existing extensions.
DotVVM to Accelerated Mobile Pages Transpiler
Tichý, Michal ; Polčák, Libor (referee) ; Pluskal, Jan (advisor)
This thesis proposes an extension to the DotVVM web framework that adds support for conversion of DotVVM pages into AMP pages. This thesis describes the current status and inner workings of DotVVM and AMP. The thesis contains an overview of the advantages and disadvantages of both technologies. Second part of this thesis describes implementation of DotVVM.AMP. Final part of this thesis shows integration of DotVVM.AMP into an existing DotVVM application.
Browser Fingerprinting Using Web Assembly
Škuta, Matúš ; Koutenský, Michal (referee) ; Polčák, Libor (advisor)
The main goal of this bachelor thesis is the implementation of device identification using Web Assembly technology. In this work we are discussing the existing methods of device identification, methods to prevent identification and ways to circumvent these barriers. We are also getting acquainted with the Brave browser, which seeks to reduce the identification of devices on the Internet. We are explaining how Web Assembly works, what are its positives, negatives and if we are able to bypass various defences against device identification thanks to this new technology. Next, we are looking at the several web APIs we are using to identify devices, and we are introducing a few extensions designed to prevent or completely limit device identification. Existing security extensions limit the activity of the Web Assembly, for example this work shows that the Web API Manager extension can neutralize the test page implemented in this work.
TypeScript Client Application Generation
Obuch, Samuel ; Polčák, Libor (referee) ; Burget, Radek (advisor)
The aim of this bachelor thesis is to design and develop a tool for simplifying and enhancing the development of web applications. The resulting solution automatically generates the basic web application structure from the documentation of the server's application interface. The tool supports the OpenAPI and WADL documentation standards. It enables the generation of the basic structure for the Angular framework or Axios library.
Tor Network Simulators: Comparison and Usability
Medek, Petr ; Grégr, Matěj (referee) ; Polčák, Libor (advisor)
This thesis talks about simulations of Tor network through simulators Shadow and Tor Path Simulator. As a part of the thesis was created web application using Tor Path Simulator that demonstrates principles of Tor network operation and attacks on it. Created application will run simulations according to parameters input by user and results will be shown using graphs and tables. Application was used as a basis for teaching materials. In my thesis I also focus on Shadow simulator and its usage.
Impact of the Application of the Content-Security-Policy Header on Firefox Webextensions
Inhliziian, Bohdan ; Večeřa, Vojtěch (referee) ; Polčák, Libor (advisor)
Čtyři roky starý bug v oficiální Bugzille prohlížeče Firefox hlásí, že hlavička Content-Security-Policy ovlivňuje chování rozšíření prohlížeče. Cílem této práce je otestovat a analyzovat všechna rozšíření Firefoxu z oficiálního uložiště rozšíření a zjistit, kolik z nich je ovlivněno bugem. Práce má čtyři fáze: stáhnout všechna rozšíření z uložiště, vytvořit použitelné webové GUI, implementovat testovací aplikaci, provést testy a vyhodnotit výsledky. V rámci práce jsme zjistili, že aplikace hlavičky CSP na webu může ovlivnit přibližně 10% rozšíření Firefoxu a 29% rozšíření doporučených Firefoxem. Celkový počet uživatelů všech ovlivněných doporučených rozšíření je 11 650 730. Tento výzkum upozorňuje na problém a nutit tvůrce prohlížeče, aby jej vyřešili a ukazuje jeho rozměr.
Porting of Chrome Zero Functionality to JavaScript Restrictor
Horňák, Peter ; Večeřa, Vojtěch (referee) ; Polčák, Libor (advisor)
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.
Computer Identification Using JavaScript Timestamps
Jireš, Michal ; Večeřa, Vojtěch (referee) ; Polčák, Libor (advisor)
This thesis deals with remote computer identification based on its internal clock skew. This clock skew will be determined using JavaScript timestamps. The goal of this thesis is to create web page, that will use clock skew to identify computer. This web page will also be used to test time distortion capabilities of browser extension JavaScript Restrictor. Web page will try to identify computer using different security presents thus testing their efficiency.
Cisco Command Line Support in Highlight.js
Mateáš, Branislav ; Veselý, Vladimír (referee) ; Polčák, Libor (advisor)
The aim of the work was to create a tool to support users of Cisco devices. Support is based on color-coded command syntax. The result of the work is a tool for off-line browsing of web pages containing Cisco commands and configuration statements with color resolution of keywords, IP addresses, numbers, strings, domains, network paths, etc. When creating the utility for Cisco users, current information technologies were used as regular expressions, which are used in the JavaScript programming language used, and the color highlighting itself is solved as an extension of the Highlight.js tool. The proposed grammar was published on the official website of the Highlight.js internet community, where it can be accessed by all interested future users. Part of the work is also testing the proposed tool on computers of different configurations in the three most used Internet browsers.

National Repository of Grey Literature : 76 records found   1 - 10nextend  jump to record:
Interested in being notified about new results for this query?
Subscribe to the RSS feed.