• Journal of Information Processing Systems
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• v.16 no.3
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• pp.541-556
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• 2020

Wireless networks have become integral to society as they provide mobility and scalability advantages. However, their disadvantage is that they cannot control the media, which makes them vulnerable to various types of attacks. One example of such attacks is the evil twin access point (AP) attack, in which an authorized AP is impersonated by mimicking its service set identifier (SSID) and media access control (MAC) address. Evil twin APs are a major source of deception in wireless networks, facilitating message forgery and eavesdropping. Hence, it is necessary to detect them rapidly. To this end, numerous methods using clock skew have been proposed for evil twin AP detection. However, clock skew is difficult to calculate precisely because wireless networks are vulnerable to noise. This paper proposes an evil twin AP detection method that uses a multiple-feature-based machine learning classification algorithm. The features used in the proposed method are clock skew, channel, received signal strength, and duration. The results of experiments conducted indicate that the proposed method has an evil twin AP detection accuracy of 100% using the random forest algorithm.

• Proceedings of the Korean Information Science Society Conference
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• 2012.06c
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• pp.269-271
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• 2012

무선 네트워크의 급속한 성장과 더불어 스마트폰(Smart Phone) 사용자들이 급증함에 따라 카페나 지하철역 등 곳곳에서 무선LAN을 이용할 수 있게 되었다. 그러나, 무선LAN 이용자의 증가는 심각한 보안 문제를 야기시킨다. 공격자 AP(Access Point)의 SSID를 합법적인 무선 AP의 SSID와 동일하게 설정한 후, 클라이언트의 접속을 유도하여 공격할 수 있는데, 이러한 공격을 에빌 트윈(evil twin)공격이라고도 한다. 에빌 트윈 공격을 함으로써 공격자의 무선 AP를 이용하는 사용자들의 비밀번호를 스니핑 하거나, 피싱등의 공격을 할 수 있게 된다. 특히, 모바일 AP기능이 가능한 스마트폰 사용자들이 급증하고 있는 가운데, 스마트폰을 이용하면 이러한 공격을 더욱 은밀하고 간편하게 수행할 수 있다. 본 논문에서는 IP주소를 이용하여, 스마트폰을 이용한 에빌 트윈 공격 탐지 방법을 제안하였다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.40 no.2
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• pp.334-348
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• 2015

Widespread use of smart devices accompanies increase of use of access point (AP), which enables the connection to the wireless network. If the appropriate security is not served when a user tries to connect the wireless network through an AP, various security problems can arise due to the rogue APs. In this paper, we are going to examine the threat by evil-twin, which is a kind of rogue APs. Most of recent researches for detecting rogue APs utilize the measured time difference, such as round trip time (RTT), between the evil-twin and authorized APs. These methods, however, suffer from the low detection rate in the network congestion. Due to these reasons, in this paper, we suggest a new factor, packet inter-arrival time (PIAT), in order to detect evil-twins. By using both RTT and PIAT as the learning factors for the support vector machine (SVM), we determine the non-linear metric to classify evil-twins and authorized APs. As a result, we can detect evil-twins with the probability of up to 96.5% and at least 89.75% even when the network is congested.

• The Journal of the Korea Contents Association
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• v.20 no.9
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• pp.19-28
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• 2020

Focusing on (2017), I would like to consider the way twin motifs' desires, deaths, and fantasies are reproduced in mirror images. First, the desire of twin motifs expresses the duality of good/evil and norm/desire as a mirror of sensual temptation. Second, the death of twin motifs expresses the spread of death as a mirror of punishment. Third, the fantasy of twin motifs expresses mental defense as fragmented mirror. In , the twin motifs effectively express three keywords-desire, death, and fantasy- with three mirror images-duality, punishment and division.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.39C no.1
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• pp.1-8
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• 2014

This paper proposed a method that prevents data leakage and modulation and detects an unauthorized device by using AP and mobile device. Most of existing method for detecting and preventing an unauthorized device are similar to type of Evil Twin. However, in previous studies can not resolve many security accident and have the problem to cope with effectively security accident on various network. In order to solve these problem, companies prepare security accident through the varies policy and guideline. but It is hard to prevent all security accident because it is consistently increasing everyday. This paper suggests technique of detecting and preventing an unauthorized device using Context Awareness and Mobile Device Management. Firstly, when mobile device go into internal network, server distinguish access permission and authorization of mobile device using acquiring the conetxt information of mobile device. By using this result, server applies the appropriate management technique to the mobile device for leakage and accident of internal network.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.10a
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• pp.262-265
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• 2015

In modern society, the spread of computers and smart phones, the Internet has become part of life. Therefore, the most places, wired/wireless router is installed. Crackers can attack the user to use the router by exploiting network vulnerabilities. therefore, the administrator is able to try cracker variety of attacks sloppy router, vaccine is installed also computer and smartphone users, appearance and address of the usual Internet is not deer medium and similar. In this paper, we look at a method for preventing in each attack seen for typical network attacks.

• Proceedings of the Korean Society of Computer Information Conference
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• 2024.01a
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• pp.113-115
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• 2024

최근 개발되는 드론은 사용자의 편의를 위하여, 사진이나 동영상과 같은 파일을 휴대 기기로 전송하거나 휴대 기기로 드론을 조종하는 것과 같은 휴대 기기를 통한 다양한 기능들을 제공하며, 이러한 기능들은 와이파이를 기반으로 이루어진다. 그러나, 와이파이는 인증 해제 공격이나 Evil Twin 공격과 같은 취약점이 존재하며, 이러한 취약점으로 인하여 드론에서 제공하는 다양한 기능들과 관련된 보안 위협이 발생할 가능성이 존재한다. 따라서, 본 논문에서는 와이파이를 사용하는 드론에서 발생 가능한 취약점을 미리 분석하고 방어하기 위한 목적으로, 와이파이에서 발생 가능한 취약점 중 하나인 패스워드 크래킹 취약점을 분석하였다. 실험 결과, 드론에서 제공하는 와이파이의 패스워드를 크래킹함으로써 공격자가 드론 네트워크 내부로 진입이 가능한 것을 실증하였다. 향후, 드론 환경에서 패스워드 크래킹 뿐만 아니라, 와이파이에서 발생 가능한 다양한 취약점을 분석하고 실증할 예정이다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.40 no.3
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• pp.551-558
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• 2015

As more people use Wi-Fi and hotspot, unauthorized APs become one of big security problems in modern society. From the beginning of 2010, researchers study about unauthorized AP continually and contributed a lot of methods of detecting unauthorized AP that use wireless resources. Many researches about unauthorized AP detection use time-delay measurement (e.g., average or standard deviation) which is caused by additional wireless connection. In the most previous researches, however, the unauthorized APs consist of laptop and pulg-in Wi-Fi adaptor, and researchers did not concern about time-delay caused by software network sharing. In this paper, we show that existing unauthorized AP detection scheme that can not efficiently classify the high performance unauthorized AP.

• (The) Research of the performance art and culture
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• no.32
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• pp.595-628
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• 2016

Pansori of a creative group pansori 2006 demonstration factory floor sound brutal sorigeuk the home of is a legend 'deokttaegol' in pansori, a creative for adaptation to remakes Work is. Evil Twin 'deokttaegol' called "Give me my leg back" in of Ghost Stories, broadcast on a kbs of lines from breakneck work is considered to be a pronoun. Sound and shadow play and playing drums and payments sentiments of the cruelty I've come across in this 'Give me my leg back' audience to be deployed to the cruel is formed by the center. Based on emotional horror of cruelty. When I was little, ever heard of Korean Ghost Stories, a bedrock of the main feeling revulsion of value in a short time and is contained in a story of filial piety, while in education, to the target Provided. Done in our lives using genre called 'pansori' sentiment and efficient learning can move about the value education can know. Sound and stories, many carefree a stimulus such as Pansori is a great gesture can be a means of education. Valued with any information, work is performed in pansori, depending upon efficient and the various, education and made an emotional cultivation resulting from the value. In my life friendly, our own via a variety of materials that can easily access many values and sentiments, and to culture for each age group on languages and customs Each age groups and instructive preferred allowing them access through their rhythm, pansori, access to the target is persistent about it with curiosity and interest. Can have interest. This wealth not belong to the traditional pansori and new together private and to the tune called creative work for the Pansori. Therefore, our language and customs, their poems span a friendly, the pansori and created using the vocabulary for each age group creative content is educational effects if used in education It is expected to be big thing. These effective approach for each age group and based on the vocabulary by the content easily understood lessons by causing only a smoothly acquired Can to provide an opportunity. Therefore, the Pansori of a creative education is important to take advantage of educational value.