• Convergence Security Journal
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• v.23 no.2
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• pp.37-45
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• 2023

Cyber deception technology plays a crucial role in monitoring attacker activities and detecting new types of attacks. However, along with the advancements in deception technology, the development of Anti-honeypot technology has allowed attackers who recognize the deceptive environment to either cease their activities or exploit the environment in reverse. Currently, deception technology is unable to identify or respond to such situations. In this study, we propose a predictive model using Markov chain analysis to determine the identification of attackers who infiltrate deceptive environments. The proposed model for deception status determination is the first attempt of its kind and is expected to overcome the limitations of existing deception-based attacker analysis, which does not consider attackers who identify the deceptive environment. The classification model proposed in this study demonstrated a high accuracy rate of 97.5% in identifying and categorizing attackers operating in deceptive environments. By predicting the identification of an attacker's deceptive environment, it is anticipated that this model can provide refined data for numerous studies analyzing deceptive environment intrusions.

• Defense and Technology
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• no.12 s.178
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• pp.28-37
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• 1993

적의 어뢰공격을 받을 때 기만기로 방어하는 것은 대단히 유효한 수단이며, 최신 기만시스템은 어뢰의 유도장치에 대응하는 여러가지 기능을 구비하여 함정과 유사한 신호를 발생시켜 어뢰를 함정으로부터 다른 방향으로 유도해서 추적을 차단시킵니다.

• Proceedings of the KIEE Conference
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• 2008.04a
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• pp.63-64
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• 2008

GPS의 활용 분야는 군용 항법 시스템에서 항공, 선박 등의 개인 항법 시스템으로 확장되었다. GPS가 넓은 범위에서 응용됨에 따라 Jamming과 같은 고의적인 간섭 신호의 제거에 대하여 많은 연구가 진행되었다. 그러나 기만 신호의 특성이나 기만 기법에 대한 연구는 미비하다. 본 논문에서는 기만 신호의 구조와 기만 개념을 연구하였으며 기만신호의 생성 기법으로 항법 메시지를 이용한 기법과 GPS PRN 코드를 이용하여 TOA(Time of Arrival)에 오차를 인가하는 기법을 정리하고 이중 TOA에 오차를 인가하는 방식을 GPS 소프트웨어 플랫폼에 구현하여 기만신호를 생성하였다. 또한 기만 신호 대응 기법의 개발 텐 성능 분석을 위하여 소프트웨어 GPS 수신기를 이용하여 생성한 기만 신호가 GPS 수신기에 미치는 영향을 분석하였다.

• Journal of the Korean Institute of Intelligent Systems
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• v.25 no.5
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• pp.495-501
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• 2015

Abroad warships are confronted with various menaces. The most critical threat of the warship is an Anti-Ship Missile (ASM). The ASM is able to be launched at a variety of environments and platforms. The ASM can evades conventional naval radar systems and electronic countermeasure techniques for providing a fatal damage to the warship. To cope with the ASM, an active decoy is an effective method to minimize the direct damage to the warship. The active decoy increases survivability of the warship because the ASM can lure pursuit of the active decoy instead of the warship. In this paper, our proposed method verifies an available response time of the active decoy to deal with the ASM using the active decoy of the warship in marine environments. We defined models of the warship, the ASM, and the active decoy, and executed simulation by combining the models. By the simulation result, the proposed method demonstrated the superiority of the mobile active decoy of the response time decoy among various active decoys, and estimated a protection area to prevent the ASM according the response time of the mobile active decoy against the ASM.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38C no.11
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• pp.1044-1050
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• 2013

This paper analyzes what is mitigated as spoofing attack using the U-Blox Receiver and GPS RF signal generator developed at ETRI. Generally the spoofing attack made the target receiver to be wrong navigation solution by providing false measurement of code and carrier. So we analyzed the impact of spoofing attack through the signal strength and navigation solution. In oder to test of effect of anti-spoofing signal, we consider the signal with antiphase code to spoofing signal and generated GPS normal signal and spoofing signal and anti-spoofing signal using GPS RF signal generator. This paper analyzed that the GPS receiver was responded to the spoofing attack according to code phase difference between spoofing and anti-spoofing signal. We confirmed that the spoofing signal was disappeared by anti-spoofing signal if code phase is an exact match.

• Journal of the Korea Institute of Military Science and Technology
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• v.13 no.2
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• pp.296-303
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• 2010

The term "spoofing" refers to the transmission of counterfeit signals to provide undetectable falsification of GPS service. A spoofing can be accomplished using information from open literature which defines the signal format and the data structure. Spoofing is intended either to produce erroneous navigation solutions or saturate the processor of the victim receiver. The GPS receiver has no way to get rid of the effect of a spoofing because GPS receivers for civil service do not have an anti-spoofing scheme. This paper analyzes the spoofing characteristics, spoofing methods and environment conditions. And the spoofing effects on GPS receiver are analyzed in detail using the designed software-based spoofer and the Nordnav receiver.

• ICROS
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• v.18 no.4
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• pp.34-45
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• 2012

• Journal of the Korea Society for Simulation
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• v.25 no.3
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• pp.53-63
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• 2016

We consider simulation study combining static and mobile decoys for survivability of a surface warship against torpedo attack. It is assumed that an enemy torpedo is a passive acoustic homing torpedo and detects a target within its maximum target detection range and search beam angle by computing signal excess via passive sonar equation, and a warship conducts an evasive maneuvering with deploying static and mobile decoys simultaneously to counteract a torpedo attack. Suggesting the four different decoy deployment plans to achieve the best plan, we analyze an effectiveness for a warship's survival probability through Monte Carlo simulation, given a certain experimental environment. Furthermore, changing the speed and the source level of decoys, the maximum torpedo detection range of warship, and the maximum target detection range of torpedo, we observe the corresponding survival probabilities, which can provide the operational capabilities of an underwater defense system.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.2
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• pp.97-102
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• 2019

The GNSS(Global Navigation Satellite System) provides important information such as Position and Navigation, Timing(PNT) to various weapon systems in the military. as a result, applications that employ satellite navigation systems are increasing. therefore, a number of studies have been conducted to deceive the weapon systems that employ GNSS. GNSS spoofing denotes the transmission of counterfeit GNSS-like signals with the intention to produce a false position and time within the victim receiver. In order to deceive the victim receiver, spoofing signal should be synchronized with GNSS signal in doppler frequency and code phase, etc. In this paper, Civilian GPS L1 C/A spoofing signals have been evaluated and analyzed by SDR receiver.

• Vending industry
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• v.11 no.2
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• pp.48-49
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• 2012

온음료자판기는 그동안 커피 일색이었다. 국산차 판매도 일부 있지만 낮은 품질수준과 위생문제로 소비자의 미각을 사로잡기는 역부족이었다. 마치 커피자판기만 존재하는 것 같은 분위기. 그러나 어디 마실 만한 차가 커피만 있으랴?. 홍차, 녹차 같은 대중성 높은 차들도 있다. 과거만 해도 국내에서는 이들 차를 자판기로 판매하기 위한 도전이 없었다. 웰빙 차 시장이 고객 선호도 증가와 함께 시장이 커지고 있는데도 대응을 못해 왔던 것이다. 그런데 최근 녹차를 판매하는 자판기 보급이 확대되고 있다. 하동녹차연구소가 하동녹차의 보급 확대를 위해 선보인 액상녹차자판기가 큰 주목을 받고 있다.