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Shedding Light on The Dark Web
Horváth, Jakub ; Jašková, Jana (referee) ; Ellederová, Eva (advisor)
Tato bakalářská práce pojednává o Temném webu a jeho využití. Přestože je Temný web součástí Internetu takřka od samotného vzniku Internetu, veřejnost mu začala věnovat svou pozornost teprve před pár lety. Hlavním cílem této práce je zvýšit povědomí uživatelů internetu o dané problematice Temného webu a tím jim pomoci chránit sebe a své osobní informace. Práce se zabývá vrstvami, do kterých je web rozdělen a jeho původem. Dále také vysvětluje, jak k Dark Webu získat přístup za použití prohlížeče Tor, popisuje kryptoměnu Bitcoin a tržiště Silkroad. Na závěr práce uvádí obsah, který lze na Dark Webu nalézt, definuje pojem počítačová kriminalita a předpovídá budoucnost Dark Webu.
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Tor Network Consensus Data Stored in OLAP Database
Chomo, Michal ; Bartík, Vladimír (referee) ; Polčák, Libor (advisor)
Tor is a distributed network providing privacy and anonymity on the Internet. Information about Tor is publicly available in a form of consensus documents. Existing tools that are able to display this information do not provide both historical and detailed view of it. A tool named Consensus Parser that provides a detailed, historical view of this information and extends it with geolocation and DNS information, was created as a part of TARZAN research project at Brno University of Technology. It stores the information in regular files on disk and makes it accessible via REST API. This thesis extends Consensus Parser with MariaDB ColumnStore database with a schema designed to conform to OLAP needs. The searching capabilities of Consensus Parser were enhanced by adding 109 new endpoints to 12 existing ones and adding the ability to limit the retrieved information to certain fields only. Disk space needed for storing the information was reduced by a factor of five.
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Analýza DARKNETu se zaměřením na forenzní zkoumání
RÝC, Tomáš
This bachelor thesis aims to analyse the DARKNET with focus on forensic research. This paper describes a variety of illegal actions which occur in the DARKNET and possible form of their forensic research. A forms of identification of the illegal actions, possibilities of their documentation and analysis of the identification of the perpetrator are suggested. By the suggested methodology is designed a cybercrime solution, which can be used by the authorities active in the criminal proceedings.
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Studium senzitivity signální dráhy přes receptor Notch na aminokyseliny v potravě
STEFFAL, Pavel
The sensitivity of Notch signaling pathway to metabolism has been proposed in several recent studies but it is unclear if the changes in fly diet composition can directly lead to changes in Notch phenotype in vivo. In this work we show that activity of Notch pathway is sensitive to amino acids via the TOR pathway. In addition we will test a candidate protein as a sensor for amino acid level in the fat body of Drosophila melanogaster but also independently in other tissues.
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Darknet networks as a way of protecting internet users' privacy
Plevný, Marek ; Sigmund, Tomáš (advisor) ; Čermák, Radim (referee)
In this age when information technologies became inseparable parts of our lives we can hardly imagine for example living without internet. There is a phenomenon connected with internet and that is large scale collection of data about internet users and their activities. Because of this fact, it is important to protect our internet privacy as a very important aspect of our lives. This work examines large scale collection of data about users internet activities. During this work, different methods and reasons for this largescale data collection are examined. Later, different ways how internet users are protected by law or how they can protect themselves are examined. One of the ways how internet users can protect their internet privacy is by using so-called anonymizing networks connected with a phenomenon called Darknet. This work examines if it is possible by ordinary internet users to adapt this method of internet privacy protection.
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TOR signalling in yeast
Šimek, Jan ; Palková, Zdena (advisor) ; Španielová, Hana (referee)
TOR ("Target of rapamycin") protein, a highly conserved Ser/Thr protein kinase, is a central component of signalling network that controls cell growth in diverse eukaryotic organism, ranging from yeast to man. TOR proteins were first identified in yeast Saccharomyces cerevisiae in 1991 as the targets of the antifungal and immunosupressive agent rapamycine. In contrast to most eukaryotes, yeast contains two TOR homologues , Tor1p and Tor2p. These proteins are components of multiprotein complexes TORC1 and TORC2. TORC1 is specifically inhibited by rapamycine and controls cell growth in response to quality of the available nutrients. TORC2, which is insensite to rapamycine, regulates actin polymerization, sphingolipid biosynthesis and endocytosis. This work is focused on description of both TOR complexes, especially on downstream and upstream regulation of TORC1. Powered by TCPDF (www.tcpdf.org)
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Correlation of Inbound and Outbound Traffic of Tor Network
Coufal, Zdeněk ; Veselý, Vladimír (referee) ; Polčák, Libor (advisor)
Communication in public networks based on the IP protocol is not really anonymous because it is possible to determine the source and destination IP address of each packet. Users who want to be anonymous are forced to use anonymization networks, such as Tor. In case such a user is target of lawful interception, it presents a problem for those systems because they only see that the user communicated with anonymization network and have a suspicion that the data stream at the output of anonymization network belong to the same user. The aim of this master thesis was to design a correlation method to determine the dependence of the data stream at the input and the output of the Tor network. The proposed method analysis network traffic and compares characteristics of data streams extracted from metadata, such as time of occurence and the size of packets. This method specializes in correlating data flows of protocol HTTP, specifically web server responses. It was tested on real data from the Tor network and successfully recognized dependency of data flows.
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Anonymous communication on the internet
Hořejš, Jan ; Babnič, Patrik (referee) ; Rosenberg, Martin (advisor)
The objective of this master’s thesis was to describe current capabilities of anonymous browsing over the Internet. The theoretical part focuses on three main methods of anonymization with main focus on Tor network. The master‘s thesis describes advantages and disadvantages of different solutions and possible attacks on them. In the next part is demonstrated Tor network, implementation of Hidden service and secured access to the server for clients and possible attacks against this proposal. The work also includes the results of measurements of all three anonymizers and the effects on their speed.
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Anonymous communication in Internet environment
Pajtinová, Mária ; Malina, Lukáš (referee) ; Hajný, Jan (advisor)
Master´s thesis focuses on certain possibilities of how user can anonymously commununicate through the Internet. There are described following anonymous programs: TOR, JAP, I2P and CyberGhost, which allow user to hide his own identity to other IP address. Subsequently, measurements from different technologies are made by anonymous program TOR for calculate transmission speed.
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Sharing informations in anonymous networks
Jonák, Martin ; Zumr, Jiří (advisor) ; Klíma, Tomáš (referee)
This work aims to introduce possibilities of sharing informations in envinroment of anonymous and P2P networks. The first part describes the principles of selected tools that allow access to an environment of anonymous networks. At second part is reader acquainted with processes of publishing informations in the form of webpage in that environment. The end compares advantages and disadvantages of each solutions.
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