Automated Man-in-the-Middle Attack Against Wi‑Fi Networks

Currently used wireless communication technologies suffer security weaknesses that can be exploited allowing to eavesdrop or to spoof network communication. In this paper, we present a practical tool that can automate the attack on wireless security. The developed package called wifimitm provides functionality for the automation of MitM attacks in the wireless environment. The package combines several existing tools and attack strategies to bypass the wireless security mechanisms, such as WEP, WPA, and WPS. The presented tool can be integrated into a solution for automated penetration testing. Also, a popularization of the fact that such attacks can be easily automated should raise public awareness about the state of wireless security

Design židle do bytového interiéru

Name: Ondřej Ryšavý Tittle of work: Design of chair into the residential interior The aim of thesis is create new chair design into a private interior. The bachelor thesis is divided into two parts. The first part deals with the history of seating furniture, issue of seating, used materials for this design and overview of basic dimensions and standards. The second part deals with designing seating furniture from the first sketches to the visualizations, constructional solutions and making model

Cooperating Distributed Grammar systems: A Comparison of Generative Power

Abstract: Cooperating Distributed Grammar systems have been introduced for describing multi-agent systems by means of formal grammars and languages. There are currently a lot of variations that differ by generative power. This article is focused on summarize definitions of selected CD grammar systems (homogenous, hybrid, and teams) and comparison of their generative power among themselves and against to languages of other systems, e.g. E0L/ET0L, CF, CS, and RE. Keywords: formal language theory, Cooperating Distributed Grammar Systems, generative power, team

Mixing console for audio signals

Bachelor’s thesis on the topic „Mixing console for audio signals“ deals with the design and production of a mixing console for mixing several independent audio channels. In the first step is designed a block diagram and then a circuit diagram. The overall configuration of the mixing console is: Four mono inputs, designed as a combined XLR/JACK 6,3 mm input, where you can connect a microphone or other mono signal (not both at the same time), two stereo inputs RCA(CINCH). Each channel allows five-band frequency correction, panorama, signal level control and signal level detection. The output is realized per line connectors (for connection to the amplifier), headphone output and headphone amplifier. After design, the mixing console is producted, revived and then measured in an audio laboratory

Five-week DoH Dataset collected on ISP backbone lines

This dataset is an additional DoH dataset used for researching DoH traffic data drift phenomena. It contains anonymized packet captures (pcaps) from the following days: 2022-11-28 2022-12-05 2022-12-12 2022-12-19 2022-12-26 The traffic was captured on the CESNET2 network and anonymized. The packet capturing and anonymization follow the methodology described in [1]. The list of IP addresses used for DoH recognition is also included within the dataset in doh_resolver_ip.csv file. The structure of the dataset is as follows: . ├── doh_resolver_ip.csv ├── pcap │ ├── 2022-11-28 │ │ ├── DoH-20221128180002.pcapng │ │ └── HTTPS-20221128180002.pcapng │ ├── 2022-12-05 │ │ ├── DoH-20221205180001.pcapng │ │ └── HTTPS-20221205180001.pcapng │ ├── 2022-12-12 │ │ ├── DoH-20221212180001.pcapng │ │ └── HTTPS-20221212180001.pcapng │ ├── 2022-12-19 │ │ ├── DoH-20221219180001.pcapng │ │ └── HTTPS-20221219180001.pcapng │ └── 2022-12-26 │ ├── DoH-20221226180001.pcapng │ └── HTTPS-20221226180001.pcapng └── README.md [1] Jeřábek, K., Hynek, K., Čejka, T., & Ryšavý, O. (2022). Collection of datasets with DNS over HTTPS traffic. Data in Brief, 42, 108310. https://www.sciencedirect.com/science/article/pii/S235234092200512

On Practical Aspects of PCFG Password Cracking

Part 1: AttacksInternational audienceWhen users choose passwords to secure their computers, data, or Internet service accounts, they tend to create passwords that are easy to remember. Probabilistic methods for password cracking profit from this fact, and allow the attackers and forensic investigators to guess user passwords more precisely. In this paper, we present our additions to a technique based on probabilistic context-free grammars. By modification of existing principles, we show how to guess more passwords for the same time, and how to reduce the total number of guesses without significant impact on success rate

Syntéza 15N-lznačených nitrosloučenin s 2,4,6-trinitrofenylskupinou

The synthesis of 2,4,6-(15N3)-trinitrophenol (picric acid-(15NO2)3), 1-Chloro-2,4,6-(15NO2)3-trinitrobenzene (picrylchloride-(15NO2)3) and various 15N labelled compounds with a 2,4,6-trinitrophenyl (picryl) moiety is described. 15N labelled isotopomers of 2,4,6-trinitroaniline (picramide), N-methyl-N-nitro-2,4,6-trinitroaniline (tetryl) and 3,5-dinitro-N,N´-bis-(2,4,6-trinitrophenyl)pyridine-2,6-diamine (PYX), labelled at different nitrogen atoms were prepared. Potassium (15N)nitrate or sodium (15N)nitrate were used as the source for the (15N)nitro groups. The infrared and Raman spectra of the materials are evaluated, especially the position and shift of (15N)nitro groups. The characteristic infrared and Raman frequencies connected with nitro groups are shifted in the corresponding 15N-labelled materials.Je popsána syntéza 2,4,6-(15N3)-trinitrofenolu (kyselina pikrová-(15NO2)3), 1-chlor-2,4,6-(15NO2)3-trinitrobenzenu (pikrylchlorid-(15NO2)3) a různých 15N značených sloučenin vycházejících z 2,4,6-trinitrofenylu (pikrylu). Byly připraveny 15N značené izotopomery 2,4,6-trinitroanilinu (pikramid), N-methyl-N-nitro-2,4,6-trinitroanilinu (tetryl) a 3,5-dinitro-N,N´-bis-(2,4,6-trinitrofenyl)pyridin-2,6-diaminu (PYX) značené na různých atomech dusíku. Jako zdroj (15N)nitroskupiny byly použity dusičnan draselný (15N) nebo dusičnan sodný (15N). Jsou předkládána a vyhodnocena infračervená a Ramanova spektra připravených materiálů zejména s ohledem na pozici a posun (15N)nitroskupin. Charakteristické infračervené a Ramanovy frekvence příslušící nitroskupinám jsou posunuty u odpovídajících 15N značených látek

First operation of the KATRIN experiment with tritium

The determination of the neutrino mass is one of the major challenges in astroparticle physics today. Direct neutrino mass experiments, based solely on the kinematics of β β -decay, provide a largely model-independent probe to the neutrino mass scale. The Karlsruhe Tritium Neutrino (KATRIN) experiment is designed to directly measure the effective electron antineutrino mass with a sensitivity of 0.2 eV 0.2 eV (90% 90% CL). In this work we report on the first operation of KATRIN with tritium which took place in 2018. During this commissioning phase of the tritium circulation system, excellent agreement of the theoretical prediction with the recorded spectra was found and stable conditions over a time period of 13 days could be established. These results are an essential prerequisite for the subsequent neutrino mass measurements with KATRIN in 2019