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Privacy Preserving Cryptographic Protocols for Secure Heterogeneous Networks
Malina, Lukáš ; Dočkal, Jaroslav (referee) ; Vaněk, Tomáš (referee) ; Zeman, Václav (advisor)
Disertační práce se zabývá kryptografickými protokoly poskytující ochranu soukromí, které jsou určeny pro zabezpečení komunikačních a informačních systémů tvořících heterogenní sítě. Práce se zaměřuje především na možnosti využití nekonvenčních kryptografických prostředků, které poskytují rozšířené bezpečnostní požadavky, jako je například ochrana soukromí uživatelů komunikačního systému. V práci je stanovena výpočetní náročnost kryptografických a matematických primitiv na různých zařízeních, které se podílí na zabezpečení heterogenní sítě. Hlavní cíle práce se zaměřují na návrh pokročilých kryptografických protokolů poskytujících ochranu soukromí. V práci jsou navrženy celkově tři protokoly, které využívají skupinových podpisů založených na bilineárním párování pro zajištění ochrany soukromí uživatelů. Tyto navržené protokoly zajišťují ochranu soukromí a nepopiratelnost po celou dobu datové komunikace spolu s autentizací a integritou přenášených zpráv. Pro navýšení výkonnosti navržených protokolů je využito optimalizačních technik, např. dávkového ověřování, tak aby protokoly byly praktické i pro heterogenní sítě.
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SCL group a Cambridge analytica: jak ovlivnily politiku a společnost v Evropě a Severní Americe
Komínek, Martin
The bachelor's thesis focuses on the scandal involving Cambridge Analytica and compares its impacts on society and politics in Europe and the USA. The theoretical part introduces key concepts in the field of modern technologies, which play an important role in communication and are essential for understanding political marketing strategies. Furthermore, an analysis of the SCL Group and its subsidiaries, which specialize in data analysis and political marketing, is conducted. In the empirical part, factors related to the Cambridge Analytica scandal that influence politics and society in Europe and North America are analyzed through a comparison of two events: the United Kingdom's referendum on membership in the European Union and the 2016 US presidential election. The conclusion presents the results of the findings.
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Generation Z's attitude towards online privacy protection and data collection for personalized advertising
Kubiš, František ; Rosenfeldová, Jana (advisor) ; Klabíková Rábová, Tereza (referee)
This Bachelor thesis looks at perception of the impact of personalised advertising on privacy protection of social networks users, namely Facebook and Instagram. In the theoretical part, therefore, the concept of privacy is first defined, generation Z is further characterized, and finally the business model of Facebook and Instagram, based on personalized advertising and data collection, is described. In the practical part of the work, in-depth interviews with representatives of the Czech generation Z are evaluated, and based on the data obtained, it is examined what awareness the Czech generation Z has about the functioning of personalized advertising, about the extent of related data collection, and finally about overall attitude and approach to the issue of online privacy is also examined.
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Spam detection methods
Rickwood, Michal ; Horváth, Tomáš (referee) ; Oujezský, Václav (advisor)
Hlavním cílem této práce je navrhnout a implementovat detekční algoritmus na spam, který využívá výhradně záznamy provozu v podobě Netflow zpráv. Poskytovatelé internetových služeb musí spam detekovat, aby zabránili označování celých jejich subnetů za spammery. Algoritmus byl navržen na základě analýzy mnohých datasetů obsahující Netflow záznamy. Tyto datasety obsahovaly validní emaily, spam a také běžný internetový provoz. Algoritmus v prvním kroku využívá domain name system blacklistů pro verifikaci spammovací stanice. Veškerá komunikace ze stanic, které se objeví na některém ze seznamů jsou okamžitě zahozeny. Filtrační kritéria algoritmu jsou aplikována pouze na stanice, které nejsou blacklisty označeny. Tato kritéria byla rozdělena na akceptační a seřaďovací. Akceptační kritérium bylo navrženo k nalezení potenciálně významných stanic. Bylo formulováno pět kritérií určených k seřazování těchto vybraných IP adresy dle pravděpodobnosti, že se jedná o spamovací stanice. Za každým kritérium stojí matematická rovnice vracející hodnotu mezi 0 a 1. Celkový součet takto vrácených hodnot se u spamovacích stanic blíží k pěti, zatímco legitimní stanice mají hodnoty znatelně nižší. Výstupem vyvinutého algoritmu je seznam potenciálních spamovacích stanic seřazených podle pravděpodobnosti, že se jedná o spamovací stanice.
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Open Data of justice.cz and ARES
Mikyska, Daniel ; Loutocký, Pavel (referee) ; Míšek, Jakub (advisor)
This bachelor thesis deals with public sector information, especially open data. It describes their definition, conditions, legislation and mandatory entities that are obliged to create this data. The next section deals with possible obstacles that may arise when opening, or reusing, open data. The protection of privacy and personal data is described the most. It states here what personal data is, how their processing is defined and who is the controller of personal data. In the last part, this work deals with the practical part, which aims to show how the basic way to use open data in a simple web application.
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Protection of personal data
Nutilová, Helena ; Prášková, Helena (advisor) ; Mikule, Leoš (referee) ; Mates, Pavel (referee)
The primary aim of this dissertation thesis is to present a comprehensive analysis of the issue of personal data protection in the Czech Republic with regard to the regulation in the EU. The secondary goal of this work is to explore the historical genesis and material sources of the issue in question. The core information sources from which the thesis draws represent laws, judicial decisions, official documents and Czech/foreign expert literature. In order to achieve the objectives of the work, the methods that are generally applicable in the field of legal science were used. Therefore the method of description (including classification), analysis and synthesis is mostly applied. The dissertation consists of seven chapters. After a short introduction, it begins with a sociological treatise on the importance of the protection of personal data in the 21st century. Privacy is currently an important topic in the light of the rapid development of information and communication technologies which have been developing since the second half of the 20th century and burgeoned since the turn of the century. Technological innovations allow for the collection of personal data on a large scale. These privacy infringements can prove to be irreversible, hence the importance of this area of law. The personal data...
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Protection of Crime Victims and the Media: Publishing of Mistreatrd Chidren Information before and after Passing the Law of Criminal Procedure Amendment in 2009
Hosenseidlová, Petra ; Moravec, Václav (advisor) ; Benda, Josef (referee)
The thesis Protection of Crime Victims and the Media: Publishing of Mistreated Children Information before and after Passing the Law of Criminal Procedure Amendment in 2009 deals with the problem of secondary victimization caused by the media. More specifically, it focuses on the mistreated children and publishing that kind of information about them which enable their identification. It is concerned with the nationwide daily press and compares the situation before and after passing the Law of Criminal Procedure Amendment in 2009. This amendment introduced measures towards better privacy protection of crime victims with a special respect to underage victims and victims of some exceptionally serious crimes. The thesis compares the occurrence of information which enable identification of mistreated children in 2008 and 2011 in the three most popular nationwide dailies - Mlada fronta Dnes, Pravo and Blesk. It is interested in the following information: names and surnames of the victims and their family members, residence location, photos of the victims, their family members and their residence location. Apart from that it also examines where journalists get those information and photos from. The main aim is to find out what was the impact of the amendment, it means whether there are less information...
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Legal aspects of the current personal data protection developments
Tumpachová, Kateřina ; Pítrová, Lenka (advisor) ; Svoboda, Petr (referee)
This doctoral thesis is divided into ten chapters in which, together with the introduction and conclusion, it aims to describe and analyse the current development of legal regulation of personal data protection, especially from a substantive law perspective. The thesis analyses the existing legal regulations of the European Union, implemented in the legal frame of the Czech Republic compared to the new General Data Protection Regulation, which unifies the legal framework for the personal data protection in the whole European Union. The first chapter of the thesis describes in brief the development of the personal data protection legal framework, from the establishment of the right to personal data protection in human rights declarations to the gaining its independence from the right to privacy. Furthermore, the relevant OECD Guidelines and Convention 108, which plays a crucial role in the field of personal data protection, are described. The development of the legal regulation of personal data protection in the European Union, together with the development of legislation in the Czech Republic, which also meant the necessary implementation of EU regulations into the Czech legal order with the accession of the Czech Republic to the European Union, are described. The second chapter describes in detail...
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77 millions user accounts have been stolen, should we worry? Analysis of Internet discussions relevant to the topic
Gregor, Filip ; Švelch, Jaroslav (advisor) ; Nečas, Vlastimil (referee)
Diploma thesis 77 million PlayStation Network accounts stolen, does it affect us?: An analysis of Internet discussions revolving around this topic deals with the case of what so far seems to be the biggest case of user information leak on the Internet. The introduction outlines the history and development of PlayStation consoles and maps major attempts to jailbreak the last generation of the console by hackers. The following section presents PlayStation Network itself, whose users were at risk of the loss of their online identity because of the attack and chronologically describes the course of breach-related events including the subsequent theft of user data. It also focuses in detail on the case of GeoHot - a hacker whose dispute with Sony alienated fellow hacker community and initiated retaliatory activities which as a result led to loss of data. Another part of the thesis examines the issue of digital identity and its protection, gives an insight into the history of the formation of the hacker community and further explains the phenomenon of existence and perception of the term hacker in the context of the Internet. The final section is devoted to analysis of selected discussion posts under thematically relevant articles, analyzes them in terms of content relevance, information sentiment and...
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Camera systems and video records in legal protection of privacy
Chládek, Milan ; Švestka, Jiří (advisor) ; Dvořák, Jan (referee) ; Vychopeň, Martin (referee)
DISSERTATION ABSTRACT JUDr. Milan Chládek Camera systems and video records in legal protection of privacy The main goal of this dissertation named Camera systems and video records in legal protection of privacy is the basic analysis and familiarization with the highest actual and in the recent time wide-discussed problems. The field of the video surveillance is highly interesting and for the time being by the law science not solved topic. The legal science and practice solve problem belongs to this problematic area often as you go along, often by the aplication of the more generic rules and therefore the deciding authorities often make the law complete by theirselves because the legislator was not able to cover all the possible situations - just because of high actuality and novelty of this topic. This work tries to cover the topis by the relative wide way, from the generic introduction and tematic survey of the right to privacy offers first the concrete work with generic topic of right to privacy in relation to the video records, further focusing on camera systems and the last third of the work focuses on highly modern technologies of using video surveillance and on other methods using video records and snapshots in the area of informatic technologies and further areas of the use. The dissertation is...
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