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Anonymizace videa
Mokrý, Martin ; Bartl, Vojtěch (oponent) ; Herout, Adam (vedoucí práce)
Cieľom tejto práce je navrhnutie a vytvorenie automatického systému pre anonymizáciu videí. Tento systém na svoju činnosť využíva rôzne detektory objektov v obraze a taktiež aj aktívne sledovanie takto zdetekovaných objektov. Na zdetekované objekty je následne aplikovaná úprava, ktorá zabezpečí dostatočnú mieru anonymizácie. Hlavným prínosom takéhoto systému je urýchlenie anonymizácie videí, ktoré bude následne možné zverejniť.
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Fingerprinting Attacks on Anonymity Systems
Krajči, Martin ; Holop, Patrik (oponent) ; Malinka, Kamil (vedoucí práce)
This thesis deals with fingerprinting attacks in anonymization systems, mostly in the Tor network. Such an attack was designed and executed in a real-world environment, with an aim to show the impact of errors from previous studies. Three closed-world datasets and one open-world dataset were gathered and then used for training and testing of N-shot learning classifier. The first dataset was gathered by browsing websites with a web browser in the default configuration, the second dataset was gathered in the same configuration as in the first case, but from a different country, and the third dataset was gathered by browsing websites with a web browser with Adblock Plus plugin turned on and Spanish locale set. When both training and testing the classifier on the first dataset, the average accuracy of classification was 92%. However, when training the classifier on the first dataset and testing on the second and third dataset, the average accuracy of classification was 38,58% and 39,65% respectively.
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Security log anonymization tool focusing on artificial intelligence techniques
Šťastná, Ariela ; Jurek, Michael (oponent) ; Safonov, Yehor (vedoucí práce)
SIEM systems play a fundamental role in security monitoring. They aggregate, normalise, and filter the collected event records, which presents core tasks for applying data mining techniques. In this way, SIEMs present a great source of large amounts of normalised data. These data carry potential for achieving progress in security research, data mining, and artificial intelligence, where they could improve existing methods of investigation, make the scanning of network traffic more clear, and detect more sophisticated vectors of attack. However, one of the main problems for the use of these data is the fact that the data contained in log files are in many cases sensitive and could pose a risk to security. Due to this, the processing, as well as sharing of the data, is restricted by legislation. Considering everything that has been mentioned above, a tool for anonymization of sensitive data in log files, which works along with persisting the correlations among data was developed. The main aim of the bachelor thesis is to focus on the technical and legal level of log processing and anonymization for AI. Within the research, the analysis of the most frequently occurring data in the log files and their risk assessment was performed, resulting in the creation of categories of data, based on their sensitivity. In the work, an analysis of the present SIEM systems along with the meta keys they use is performed.
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Anonymizace videa
Mokrý, Martin ; Bartl, Vojtěch (oponent) ; Herout, Adam (vedoucí práce)
Cieľom tejto práce je navrhnutie a vytvorenie automatického systému pre anonymizáciu videí. Tento systém na svoju činnosť využíva rôzne detektory objektov v obraze a taktiež aj aktívne sledovanie takto zdetekovaných objektov. Na zdetekované objekty je následne aplikovaná úprava, ktorá zabezpečí dostatočnú mieru anonymizácie. Hlavným prínosom takéhoto systému je urýchlenie anonymizácie videí, ktoré bude následne možné zverejniť.
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