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Comparative study of State and Citizen Perceptions on Social Media Security in the Czech Republic
Skřivánková, Andrea ; Collins, Jonathan (advisor) ; Střítecký, Vít (referee)
This diploma thesis draws attention to a highly relevant and important topic, i.e. cybersecurity on social media. The pace of technology development and trends is relentless and society often fails to react properly to these changes, or even to notice them. This carries with it the risk of harm from unawareness or carelessness. Social media became a daily part of human interaction and often a space for sharing personal information, and as these activities moved into the online world, so did crime. No one wants to experience harassment or theft, but the internet and social media provide a much greater opportunity and scope. People are at risk not only of being attacked on the street, but also from the other side of the world, and it makes catching the attacker very difficult. This thesis analyses how this problem is perceived by the state of the Czech Republic in this case (and additionally the EU), which should protect its laws and institutions, and on the other hand, by people as ordinary users of these platforms, who may find all the existing technology & regulatory measures confusing/overwhelming/nonsufficient/ etc. The thesis describes how theory differs from day-to-day practice, the most common cyber threats and the means to counter and prevent them.
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The influence of social media on adolescents
Janoušová, Viola ; Mazáčová, Nataša (advisor) ; Syslová, Hana (referee)
This bachelor's thesis focuses on young teenagers and their relationship with social media and how social media affects their lives and what impact it has on them. The thesis is divided into a theoretical and a practical part. In the theoretical part, the first topic is approached in more detail is the topic of adolescence and its phases, the next topic is the internet and social networks, where the risks of possible addiction to these networks and the Internet are described. The last chapter focuses on the issue of cyberbullying, its forms and manifestations. The empirical part is dedicated to practical research. I chose case studies as a form of research. The case studies are further analyzed through open coding. I used semi-structured interviews to collect data for this empirical research. The goal of this bachelor's thesis is to present social media and anylyze the relationship of adolescents to these social networks and further reveal how these networks influence the lives of today's adolescents.
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Availability and accessibility of alcohol and tobacco products on the internet for adolescents
Červenková, Nikola ; Mravčík, Viktor (advisor) ; Koutská, Kateřina Olga (referee)
Background: The Czech Republic has traditionally been perceived as a country with a relatively high availability of addictive substances for minors, which is also reflected in the results of control studies. The Internet is an important market environment and medium through which so called distance selling takes place. There are legal obligations to verify age in distance selling, but the extent and application of these obligations are not sufficiently described. Aim: The aim of this master's thesis was to find out how sellers of alcoholic beverages verify the age of shoppers and whether sellers of tobacco products etc. use a computer system that clearly verifies the age of the shopper. A sub-objective was to find out what the shipping options are when an order is placed and whether there is re-verification of the shopper's age when the goods are handed over. Methodology and material: The research set consisted of 30 online e-shops offering alcohol and 30 e-shops offering tobacco products. The selection was done in a regular internet environment, using search strings. The e-shops where control purchases were made were randomly selected from the list of analysed e-shops. Results: The research shows that alcohol and tobacco sellers do not sufficiently comply with all legal obligations. Only about...
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Censorship on the Internet
Postolka, Jáchym ; Rychlý, Marek (referee) ; Očenášek, Pavel (advisor)
Cenzura internetu je velmi relevantní téma moderní společnosti. Stále více se internet využívá ke kontrole přístupu k informacím a sledováním jeho uživatelů. Cílem této práce je zdokumentovat způsoby cenzury ve Spojených Arabských Emirátech a za jakým účelem je internet v této zemi cenzurován. Dále je to také prozkoumání dopadů této cenzury na přístup uživatelů k internetu, jakým způsobem cenzura internetu omezuje přístup k svobodným informacím a jak je využívána jako nástroj represe. Součástí této práce je návrh a implementace nástroje na zjištění přítomnosti cenzury a jakým způsobem je internet cenzurován. Tento nástroj je sestaven z několika testů, kde každý je zaměřen na otestování jiného způsobu cenzury. Tento nástoj lze úpravou vstupů využít pro testování cenzury i v jiných zemích, než jsou Spojené Arabské Emiráty. Nástroj nebyl schopen zjistit známky cenzury, kvůli jeho spouštění na virtuálním privátním serveru, který svým umístěním v síti obchází cenzorské prostředky dodavatelů internetového připojení, které jsou hlavním způsobem cenzury této země. Pro otestování jeho funkčnosti jako nástroje detekce a analýzy cenzury ve Spojených Arabských Emirátech, by vyžadovalo lokální uživatelský přístup k internetu.
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Censorship on the Internet
Kyjovský, Dalibor ; Rychlý, Marek (referee) ; Očenášek, Pavel (advisor)
Internet censorship is a significant and current topic that affects freedom of speech and access to information. This bachelor’s thesis focuses on the analysis of internet censorship with an emphasis on technical aspects, using Belarus as an example. The introductory part of the thesis deals with the context of internet censorship in the world and emphasizes the importance of freedom on the internet. Subsequently, a detailed analysis of censorship means in Belarus is carried out, including technical details and detection possibilities. The thesis also examines tools that allow users to bypass internet censorship. The main output of the thesis is a proposed and implemented application for analyzing the internet environment in Belarus, which allows the identification of censorship mechanisms and provides data for further research. The obtained results support a better understanding of the issue of internet censorship and offer possibilities for further monitoring and development of this application.
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Běhová prostředí pro testování činnosti rozšíření pro webový prohlížeč
Petráňová, Jana ; Dolejška, Daniel (referee) ; Polčák, Libor (advisor)
This thesis briefly describes how users are being tracked across the internet while browsing and names the most popular browser extensions focusing on security and privacy. It focuses on the JShelter project and its testing, which is used as a fundamental basis for the proposed implementation of the run-time environment. It also mentions the PETInspector project, which is redone and used as a framework for testing. It presents a possible design of the run-time enviroment implementation, which is later implemented. The implementation is summarized and used for various tests, including those that affirm its ability to fulfil defined conditions. Finally, the tests results are presented and interpreted.
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E-commerce Design
Staňka, Jakub ; Neuwirth, Bernard (referee) ; Luhan, Jan (advisor)
The thesis contains information about development of a simple online store using basic technologies like HTML, CSS, PHP, Javascript etc. The website design has been optimized for SEO and subjected to optimization test. Data security of the store is also the scope of the work.
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Malware: Behaviour, Detection and Prevention
Langer, Jakub ; Šedrlová, Magdalena (referee) ; Ellederová, Eva (advisor)
Tato bakalářská práce pojednává o formě počítačové kriminality, která využívá škodlivý software zvaný malware. Nastiňuje základy počítačových bezpečnostních hrozeb a vysvětluje relevantní pojmy a koncepty. Poté práce postupuje přes nejběžnější a nejnebezpečnější typy malwaru, přičemž každý z nich popisuje a zároveň začleňuje informace o tom, jak konkrétní druh malwaru ovlivnil svět. Práce se dále zabývá základy detekce malwaru a popisuje, jak se uživatelé mohou chránit pomocí preventivních technik. Cílem práce je vytvořit manuál, který by mohli použít běžní uživatelé počítačů ke své vlastní ochraně před malwarem.
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Criminal Liability for the Dissemination of Illegal Content on the Internet
Grejták, Igor ; Gřivna, Tomáš (advisor) ; Richter, Martin (referee)
Criminal liability for the distribution of illegal content on the Internet Abstract The thesis deals with the question of criminal liability for the distribution of illegal content in the Internet environment, approaching the issue from both a theoretical and practical point of view. In the first part, the thesis describes in a historical excursion the emergence of the Internet and the development of cybercrime from the first criminal activities to the current threats. Its main objective is to assess the timeliness and adequacy of legislation in the area of criminal liability for the dissemination of content in the Internet environment. Within the framework of criminal liability, the thesis categories entities involved in the distribution of illegal content in the Internet environment into three distinct groups. Specifically, it distinguishes between the criminal liability of content distributors, the liability of information service providers, and the liability of autonomous machines capable of generating and distributing content. The second part of the thesis deals specifically with the criminal liability of distributors of illegal content. It defines the concept of criminal liability and places it in the context of liability for the dissemination of illegal content on the Internet. Within this section,...
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