• 제목/요약/키워드: Threat-Modeling

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Future Trends of AI-Based Smart Systems and Services: Challenges, Opportunities, and Solutions

  • Lee, Daewon;Park, Jong Hyuk
    • Journal of Information Processing Systems
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    • 제15권4호
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    • pp.717-723
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    • 2019
  • Smart systems and services aim to facilitate growing urban populations and their prospects of virtual-real social behaviors, gig economies, factory automation, knowledge-based workforce, integrated societies, modern living, among many more. To satisfy these objectives, smart systems and services must comprises of a complex set of features such as security, ease of use and user friendliness, manageability, scalability, adaptivity, intelligent behavior, and personalization. Recently, artificial intelligence (AI) is realized as a data-driven technology to provide an efficient knowledge representation, semantic modeling, and can support a cognitive behavior aspect of the system. In this paper, an integration of AI with the smart systems and services is presented to mitigate the existing challenges. Several novel researches work in terms of frameworks, architectures, paradigms, and algorithms are discussed to provide possible solutions against the existing challenges in the AI-based smart systems and services. Such novel research works involve efficient shape image retrieval, speech signal processing, dynamic thermal rating, advanced persistent threat tactics, user authentication, and so on.

System Dynamics Modeling of Korean Lease Contract Chonsei

  • Myung-Gi Moon;Moonseo Park;Hyun-Soo Lee;Sungjoo Hwang
    • 국제학술발표논문집
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    • The 5th International Conference on Construction Engineering and Project Management
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    • pp.151-157
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    • 2013
  • Since the sub-prime mortgage crisis from the US in 2008, the Korean housing market has plummeted. However, the deposit prices of the Korean local lease contract, Chonsei, had been increasing. This increase of Chonsei prices can be a threat to low-income people, most of whom prefer to live in houses with a Chonsei contract. In the housing and Chonsei market, there are many stakeholders with their own interest, hence, simple thoughts about housing and Chonsei market, such as more house supply, will decrease house price, would not work in a real complex housing market. In this research, we suggests system dynamics conceptual model which consists of causal-loop-diagrams for the Chonsei market as well as the housing market. In conclusion, the Chonsei price has its own homeostasis characteristics and different price behavior with housing price in the short and long term period. We found that unless government does not have a structural causation mind in implementing policies in the real estate market, the government may not attain their intended effectiveness on both markets.

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Predicting the Adoption of Health Wearables with an Emphasis on the Perceived Ethics of Biometric Data

  • Tahereh Saheb;Tayebeh Saheb
    • Asia pacific journal of information systems
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    • 제31권1호
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    • pp.121-140
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    • 2021
  • The main purpose of this research is to understand the strongest predictors of wearable adoption among athletes with an emphasis on the perceived ethics of biometric data. We performed a word co-occurrence study of biometrics research to determine the ethical constructs of biometric data. A questionnaire incorporating the Unified Theory of Acceptance and Use of Technology (UTAUT), Health Belief Model and Biometric Data Ethics was then designed to develop a neural network model to predict the adoption of wearable sensors among athletes. Our model shows that wearable adoption's strongest predictors are perceived ethics, perceived profit, and perceived threat; which can be categorized as professional stressors. The key theoretical contribution of this paper is to extend the literature on UTAUT by developing a predictive modeling of factors affecting acceptance of wearables by athletes, and highlighting the ethical implications of athlete's adoption of wearables.

비정형 Security Intelligence Report의 정형 정보 자동 추출 (An Automatically Extracting Formal Information from Unstructured Security Intelligence Report)

  • 허윤아;이찬희;김경민;조재춘;임희석
    • 디지털융복합연구
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    • 제17권11호
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    • pp.233-240
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    • 2019
  • 사이버 공격을 예측하고 대응하기 위해서 수많은 보안 기업 회사에서는 공격기법의 특성, 수법 유형을 빠르게 파악하고, 이에 대한 Security Intelligence Report(SIR)들을 배포한다. 하지만 각 기업에서 배포하는 SIR들은 방대하며, 형식이 맞춰져 있지 않다. 본 논문은 대량의 비정형한 SIR들에서 정보를 추출하는데 소요되는 시간을 줄이고 효율적으로 파악하기 위해 SIR들에 대해 정형화하고 주요 정보를 추출하기 위해 5가지 분석기술이 적용된 프레임워크를 제안한다. SIR들의 데이터는 정답 라벨이 없기 때문에 비지도 학습방식을 통해 키워드 추출, 토픽 모델링, 문서 요약, 유사문서 검색 총 4가지 분석기술을 제안한다. 마지막으로 SIR들에서 위협 정보 추출하기 위해 데이터를 구축하였으며, 개체명 인식 기술에 적용하여 IP, Domain/URL, Hash, Malware에 속하는 단어를 인식하고 그 단어가 어떤 유형에 속하는지 판단하는 분석기술을 포함한 총 5가지 분석기술이 적용된 프레임워크를 제안한다.

COVID-19 접촉자 추적 기술에 대한 평가 기준 마련 및 보안성 비교·분석 (Evaluation Criteria for COVID-19 Contact Tracing Technology and Security Analysis)

  • 이호준;김승주;이상진
    • 정보보호학회논문지
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    • 제30권6호
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    • pp.1151-1166
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    • 2020
  • COVID-19 감염 확산을 효과적으로 막기 위해 최근 ICT 기술을 기반으로 하는 접촉자 추적 기술이 사용되고 있으며, 이 기술들에는 추적 방식에 따라 다양한 유형이 존재한다. 하지만 이러한 기술들은 항상 보안 위협에 노출되어 있으며 각각의 유형에 따라 발생 가능한 위협도 다양하다. 본 논문에서는 다양한 유형의 접촉자 추적 기술에서 공통적으로 발생하는 프로세스들을 확인하고 이 과정에서 발생할 수 있는 위협을 식별하였다. 이를 통해 다양한 유형의 접촉자 추적 기술 모두에 적용 가능한 공통된 평가 기준을 도출하였으며, 이를 실제 공개된 접촉자 추적 기술에 적용하여 유형 별 비교 분석을 수행하였다. 이러한 연구는 여러 유형 간의 비교를 통해 안전하고 효과적인 접촉자 추적 기술을 선택하는데 도움이 될 수 있을 것이다.

A Model of Artificial Intelligence in Cyber Security of SCADA to Enhance Public Safety in UAE

  • Omar Abdulrahmanal Alattas Alhashmi;Mohd Faizal Abdullah;Raihana Syahirah Abdullah
    • International Journal of Computer Science & Network Security
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    • 제23권2호
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    • pp.173-182
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    • 2023
  • The UAE government has set its sights on creating a smart, electronic-based government system that utilizes AI. The country's collaboration with India aims to bring substantial returns through AI innovation, with a target of over $20 billion in the coming years. To achieve this goal, the UAE launched its AI strategy in 2017, focused on improving performance in key sectors and becoming a leader in AI investment. To ensure public safety as the role of AI in government grows, the country is working on developing integrated cyber security solutions for SCADA systems. A questionnaire-based study was conducted, using the AI IQ Threat Scale to measure the variables in the research model. The sample consisted of 200 individuals from the UAE government, private sector, and academia, and data was collected through online surveys and analyzed using descriptive statistics and structural equation modeling. The results indicate that the AI IQ Threat Scale was effective in measuring the four main attacks and defense applications of AI. Additionally, the study reveals that AI governance and cyber defense have a positive impact on the resilience of AI systems. This study makes a valuable contribution to the UAE government's efforts to remain at the forefront of AI and technology exploitation. The results emphasize the need for appropriate evaluation models to ensure a resilient economy and improved public safety in the face of automation. The findings can inform future AI governance and cyber defense strategies for the UAE and other countries.

퀵서피스기법을 이용한 신장병 두상의 자유곡면 모델링 기술 (Modeling Technology on Free-form Surface of a New Military Personal Head using Quick Surface Method)

  • 이용문;황태선;김훈;남희태;이기환;강명창
    • 한국기계가공학회지
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    • 제17권6호
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    • pp.170-176
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    • 2018
  • Recently, weapon system requires personal protection products due to the explosion of rapid-fire explosion, which is considered to be multi threat in modernization, complication and war against terrorism. However, the conventional Korean military bullet protection helmets are not suitable for wearing convenience and combatant interoperability in terms of ergonomic. In this paper, we propose a suitable 3D Scanning method for the head, and compare the measured 3D dimension with the existing 2D measurement value to identity the reliability. Reverse engineered soldier head using the quick surface method was realized with a perfect free-form surface and satisfactory tolerance range (${\pm}0.2mm$). Through the comparison of 3D and 2D measured head dimensions, the absolute error value was 0.73 mm on average and relative error was 0.35 %, confirming the high accuracy of the 3D scan modeling. Also, quick surface method using 3D scanner is suggested a fast and accurate skill for ergonomics in obtaining the head modeling needed for military's personal bullet protection helmet design.

Time Domain Response of Random Electromagnetic Signals for Electromagnetic Topology Analysis Technique

  • Han, Jung-hoon
    • 한국컴퓨터정보학회논문지
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    • 제27권2호
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    • pp.135-144
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    • 2022
  • 전자기 토폴로지 기법은 복합적인 전파 환경의 모델링을 효과적으로 수행하기 위하여, 구성되는 전파 환경 단위를 각각 해석하고 네트워크의 형태로 결합하여 재해석하는 방법이다. 일반적인 상용 통신 채널 모델에서는 전파 환경이 복합적이고 예측이 어렵기 때문에 정확도는 낮지만 평균적인 해를 활용하는 확률 모델을 활용한다. 하지만, 상대적으로 높은 정확도의 전자파 전파 특성을 요구하는 전자기 펄스 등 위협 전자파의 전파 및 결합 분석, 전자전, 5G 및 6G 이상의 로컬 통신 채널 모델 등에 사용되는 전파 모델 응용에서는 전자기 토폴로지 기법을 활용한 전파 모델링 기법 등이 활용된다. 본 논문은 주파수 영역에서 해석되는 전자기 토폴로지(EMT) 기법의 효과적인 수행 방안과 알고리즘, 그리고 프로그램 구현에 대하여 설명한다. 또한 주파수 영역의 EMT 해석 결과에 대하여 임의의 인가 신호원에 대한 시간 영역에서의 응답을 도출하는 방안에 대하여 논의한다.

5G 기지국에 대한 보안성평가기준 연구 (A Study on Security Requirements for 5G Base Station)

  • 홍바울;김예준;조광수;김승주
    • 정보보호학회논문지
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    • 제31권5호
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    • pp.919-939
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    • 2021
  • 5G 네트워크는 차세대 통신기술로서 4G 네트워크 대비 빠른 속도, 짧은 통신 지연, 높은 연결성을 기반으로 대량의 트래픽 처리가 가능하다. 이에 따라 4차 산업혁명의 핵심 기술로 대두되어 그 중요성이 증가하고 있다. 이러한 5G 네트워크 환경에서 기지국은 그 특성상 높은 밀도로 도심 전역에 설치되어 있으며, 사용자 단말과 연결되어 서비스를 제공한다. 따라서 악의적인 공격자에 의한 피해가 기지국에 발생하는 경우, 사용자 및 사회 전반에 큰 피해를 줄 것으로 예상된다. 2016년 뉴욕타임즈 기사에 따르면 중국의 특정 서버로 사용자 데이터를 전송하는 백도어로 추정되는 소프트웨어가 미국 내 안드로이드 기기, 자동차와 같은 스마트 기기에 포함되어 있다고 보도되었다. 이후 통신 장비에 백도어 설치에 대한 이슈가 지속적으로 제기되었으며, 5G 기지국과 같은 통신장비에 대한 안전성 확보의 필요성이 대두되었다. 따라서 본 논문에서는 5G 기지국을 대상으로 체계적인 방법론인 위협모델링을 사용하여 도출한 보안기능요구사항과 백도어 이슈에 대응할 수 있는 수준의 보안보증요구사항을 제안한다. 본 논문에서 제안하는 보안요구사항은 5G 기지국에 대한 보안성평가기준으로서 안전한 네트워크 환경을 구성하기 위한 기지국 설계 및 개발에 사용될 수 있다.

Development of Maneuvering Simulator for PERESTROIKA Catamaran using Fuzzy Inference Technique

  • Lee, Joon-Tark;Ji, Seok--Jun;Choi, Woo--Jin
    • Journal of Advanced Marine Engineering and Technology
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    • 제28권2호
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    • pp.192-199
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    • 2004
  • Navigation simulators have been used in many marine schools and manne training centers since the early 1960's. But these simulators were very expens~ve and were almost limited only in one engine system. In this paper, a catamaran with twin engine system. controlled by two remote control levers and its economic simulator based on a personal computer shall be introduced. One of the main features of catamaran is to control variously its progressing direction. In the static state, a catamaran can move into all the directions and in the dynamic state, ship can change immediately the heading and speed. Although a good navigator can skillfully operate one engine system, it is difficult to control smoothly the catamaran of twin engine system without any threat for the safety of passengers. Thus. in order to bring up the expert navigators. the development of a simulator which makes the training effective is necessary, Therefore, in this paper, a Fuzzy Inference Technique based Maneuvering Simulator for catamaran with twin engine system was developed. In general. in order to develop a catamaran simulator for effective training, first of all. its mathematical model must be acquired. According to the acquired system modeling. the dynamics of simulator is determined, But the proposed technique can omit a complex and tedious mathematical modeling procedures by using the fuzzy inference, which dependent upon only experiences of an expert and can design an efficient training program for unskillful navigators. This developed simulator was consisted of two fuzzy inference routines and two remote control levers, and was focused on effective training of navigators for the safe maneuvering to avoid a collision in a harbor.