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Analysis of malware
Bláha, Michael ; Caha, Tomáš (referee) ; Člupek, Vlastimil (advisor)
The aim of my bachelor thesis is to design a safe environment for the analysis of malicious software. In the theoretical part of the work, I deal with the basic division of computer viruses. Next, I describe two main procedures for malware analysis, namely static and dynamic analysis. I describe why they are used and what tools fall into these categories. I also present my methodology for secure malware analysis. In the practical part of the work, I focus on creating an analytical environment on Windows 10 and Fedora platforms. I use a graphical environment and a command line to create virtual machines. For the analysis of network traffic, I create the so-called "Fake Internet" program with the INetSim program. In the last part of the work, I deal with a sample analysis of selected types of computer viruses. I follow the described methodology. For each analysis, I describe a brief summary and results. At the end of the work, I describe a possible defense against malicious software.
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EEG correlates of egocentric and allocentric distance estimates in virtual environment in humans
Kalinová, Jana ; Vlček, Kamil (advisor) ; Telenský, Petr (referee)
Cognitive processes associated with spatial orientation can use different reference frames: egocentric, centered on observer and allocentric, centered on objects in the environment. In this thesis, we use EEG to investigate the dynamics of brain processes accompanying spatial orientation based on these reference frames. Participants were instructed to estimate distances between objects or themselves and objects located in a virtual circular arena; this task was presented in both 2D and 3D displays. Task-related EEG changes were analyzed using a time-frequency analysis and event-related potential analysis of 128-channel EEG recordings. Through time-frequency analysis we found significant power differences in delta, theta, alpha, beta and gamma bands amongst the control, egocentric and allocentric testing conditions. We noted a decrease in alpha power in occipital and parietal regions, while a significantly stronger decrease was observed for the allocentric condition compared to both egocentric and control conditions. A similar pattern was also detectable for the beta band. We also report an increase in theta and delta power in temporal, fronto-temporal and lateral frontal regions that was significantly stronger for the egocentric condition compared to control and, in some electrodes, even...
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Evidence securing in virtual environment
Havlová, Miluše ; Malina, Lukáš (referee) ; Martinásek, Zdeněk (advisor)
The bachelor thesis deals with evidence securing in virtual environment. The main goal is to suggest suitable virtual environment for evidence securing which can be used in prosecution. As the next the tools that are suitable for safe securing of evidence are described. With the help of selected tools the sample of malware is secured and then the sample is analyzed and described. The suggested environment is used to evidence gathering within the frame of simulated security incident.
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Aplication of virtual reality on dynamic postural stability
Al Amri, Saad Khazim D ; Pánek, David (advisor) ; Maršáková, Kateřina (referee)
Objective The aim of this study was to identify if there is any significant difference in dynamic postural stability after 3D Virtual Reality VR application on healthy adults. Methodology There were 11 healthy adults participants ( n=11 , 7 males, 4 females), with age average of 27 years. Pre-test and post-test procedures were performed by using NeuroCom, Smart Balance Master System, Sensory Organization Test SOT (Composite Equilibrium, Sensory Analysis of Somatosensory SOM, Visual VIS, Vestibular VEST, and Preference PREF) and Motor Control Test MCT (Weight Symmetry). Application of 3D Virtual Reality was provided by using Samsung Gear Goggles, with 5 minutes duration. Results There were no significant statistical differences in SOT Composite Equilibrium, Sensory Analysis of Somatosensory SOM, Visual VIS, Vestibular VEST, Preference PREF, and MCT Weight Symmetry results (p > 0.05) after the Virtual Reality application. Conclusion The application of Virtual Reality has no significant difference on dynamic postural stability in healthy adults from one session exposure. Further investigation and trials are needed to clarify the Virtual Reality effectiveness on dynamic postural stability of healthy adults. Keywords Postural Stability, Dynamic Postural stability, Balance, Computerized Dynamic...
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Battlefield for Virtual Autonomous Robots
Sejkora, Vojtěch ; Ježek, Pavel (advisor) ; Forstová, Lenka (referee)
In most cases, programming is taught using mathematically motivated examples, which are not attractive for all students. As a result, there have been many projects in the past that aimed to teach programming through games. The main goal of this Bachelor's thesis was to develop a game in which students can compete with each other in programming virtual robots, and thus gain basic programming skills. This Bachelor's thesis contains several types of games, a visualization of the game and a mechanism for adding obstacles to the map. Futhermore, it contains a manual describing how to use this project and develop new virtual robots. 1
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Lifestyle of the virtual reality users
CHUDÝ, Pavel
The theme of this bachelor thesis is "Life style of users of virtual reality". In the theoretical part, the reader is introduced with a brief history of virtual reality, where he is presented with the predecessors of today's devices and significant milestones in the technology of virtual reality. For a better understanding of the content, there are several definitions of virtual reality, and an overview and description of some of the most well-known devices, through which virtual reality can be accessed, together with their advantages and disadvantages. In subsequent chapters are briefly described possibilities of virtual reality and benefits of its usage in different areas. In the theoretical part of the thesis is also described the environment of application AltspaceVR, in which a qualitative research survey was carried out through semi-structured interviews. Since virtual reality is quite new technology, this work also briefly mentions the negative impact of virtual reality on humans. Chapter Lifestyle then introduces basic definitions and their comparisons, and then deals in more detail with the individual elements of lifestyle. At the end of the theoretical part, the specifics of the various age groups, i have met during the research survey, are described. Within the practical part of the thesis a qualitative research survey was realized in the form of a semi-structured interview with users of virtual reality, directly in the virtual environment of AlstpaceVR application. The aim of the practical part was to analyze case studies, based on individual users' answers, to answer research questions and to find out what is the lifestyle of users of virtual reality.
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Battlefield for Virtual Autonomous Robots
Sejkora, Vojtěch ; Ježek, Pavel (advisor) ; Kruliš, Martin (referee)
In most cases, programming is taught using mathematically motivated exam- ples, which are not attractive for all students. As a result, there have been many projects in the past that aimed to teach programming through games. A goal of this Bachelor's thesis was to develop a game in which students can compete with each other in programming virtual robots, and thus gain basic programming skills. This Bachelor's thesis contains several types of games, a visualization of the game and a mechanism for adding obstacles to the map. Futhermore, it contains a manual describing how to use this project and develop new virtual robots. 1
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Immigration to Facebook Virtual Community and the Impact on Prague Offline Relationships
Bakalářová, Jana ; Máchová, Eva (advisor) ; Švelch, Jaroslav (referee)
These days old-fashioned ways of developing and maintaining relationships suffer from the fast-growing CMC communication. Following this does this evolution of computer-mediated communication have an influence on social relationships, friendships and user behavior? This thesis examines how strongly can social media influence people, their cultural identity and online/offline bonds. The thesis is mainly focused on Facebook social network, which currently brings together more than a billion people. My work is based on three hypotheses and my aim is to confirm or disprove whether people consciously dissemble and show better me than fact, whether our behaviour online has an affect on offline relationships in terms of weakening ties, and whether the Facebook relationships have weaker ties than traditional offline relationships. This thesis will be based on a survey of at least 400 people from Prague regarding their use of Facebook to form and maintain relationships. The questionnaire survey is based on the theories of CMC created by theorist Christian Fuchs in his publication Internet and Society: Social Theory in the Information Age published in 2008.
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The safety of seniors in the Internet cyberspace
Burešová, Martina ; Ondrušová, Jiřina (advisor) ; Cimrmannová, Tereza (referee)
DIPLOMOVÁ PRÁCE The safety of seniors in the Internet cyberspace Ing. Martina Burešová Praha 2015 This thesis focuses on issues of use of Internet environment by seniors. I deal with benefits and risks of the cyberspace. I describe how the Internet environmet can affect the quality of life. Specific risks and actions to prevent them are defined theoretically. The theoretical description is afterwards enhanced by actual experience from my long-term work of teaching courses on computers to seniors and handicapped people. I present examples of good practice. In the practical part, I concentrate on research of safe manners of seniors in the Internet cyberspace. I organized the research as secondary activity of the education itself. I used questionnaires, tests, interviews and observation for the research. The goal of the research was the evaluation of seniors' compenences of safety manners in the cyberspace. I assume from the results of the research that seniors' competences are insufficient. I believe, subject to my observation and in compliance with safe off-line communication analysis and following evaluation of hypotheses, that safe manners may be taught to seniors using appropriate method of education.
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