• International Journal of Computer Science & Network Security
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• 제22권2호
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• pp.175-184
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• 2022

Voice over Internet Protocol (VoIP) has grown in popularity as a low-cost, flexible alternative to the classic public switched telephone network (PSTN) that offers advanced digital features. However, additional security vulnerabilities are introduced by the VoIP system's flexibility and the convergence of voice and data networks. These additional challenges add to the normal security challenges that a VoIP system's underlying IP data network infrastructure confront. As a result, the VoIP network adds to the complexity of the security assurance task faced by businesses that use this technology. It's time to start documenting the many security risks that a VoIP infrastructure can face, as well as analyzing the difficulties and solutions that could help guide future efforts in research & development. We discuss and investigate the challenges and requirements of VoIP security in this research. Following a thorough examination of security challenges, we concentrate on VoIP system threats, which are critical for present and future VoIP deployments. Then, towards the end of this paper, some future study directions are suggested. This article intends to guide future scholars and provide them with useful guidance.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권2호
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• pp.906-918
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• 2018

The advent of the Internet of Things (IoT) technology, which brings many benefits to our lives, has resulted in numerous IoT devices in many parts of our living environment. However, to adapt to the rapid changes in the IoT market, numerous IoT devices were widely deployed without implementing security by design at the time of development. As a result, malicious attackers have targeted IoT devices, and IoT devices lacking security features have been compromised by attackers, resulting in many security incidents. In particular, an attacker can take control of an IoT device, such as Mirai Botnet, that has insufficient security features. The IoT device can be used to paralyze numerous websites by performing a DDoS attack against a DNS service provider. Therefore, this study proposes a scheme to minimize security vulnerabilities and threats in IoT devices to improve the security of the IoT service environment.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제5권11호
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• pp.2204-2220
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• 2011

Without providing a proper security measure to the handover procedure in Mobile WiMAX, several security attacks can be mounted. Even though security schemes have been previously proposed for this purpose, they are still vulnerable to several security attacks due to fatal design flaws. A newly proposed security scheme in this paper is based on the framework of authentication domain and concept of handover ticket. A method of establishing security associations within the authentication domain is proposed, and a lightweight security measure to protect the management messages associated with the handover is also proposed. Especially, using the handover ticket, the new security scheme can defend against a Redirection Attack arising from a compromised base station. The new security scheme is comparatively analyzed with the previous security schemes in terms of Replay, Session Hijacking, Man-In-The-Middle, and Redirection attacks.

• 융합보안논문지
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• 제21권1호
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• pp.101-106
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• 2021

금융회사는 금융정보를 보호하기 위해 정보보호 전략 및 계획을 수립하고 정보보호 관리체계 운영, 정보보호 시스템 구축 및 운영, 취약점 점검, 보안관제 등 다양한 정보보호 활동을 하고 있다. 본 논문에서는 금융회사에서 수행 중인 각종 정보보호 활동에 대한 가시성을 확보하고 통합 관리할 수 있는 금융회사를 위한 기업 정보보호 포털 시스템을 제시하고자 한다. 기업 정보보호 포털 시스템은 정보보호 부서의 활동을 시스템화하여 정보보호 활동이 정보보호 부서만의 활동이 아닌 최고경영자부터 임직원까지 참여할 수 있도록 통합된 환경을 제공한다. 이를 통해 최고경영진이 기업경영에 정보보호를 반영할 수 있는 정보보호 거버넌스로도 활용할 수 있다.

• 한국멀티미디어학회논문지
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• 제18권4호
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• pp.506-523
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• 2015

The intent is to determine whether or not the custody transfer is helpful for data transmission in challenging underwater communications when running Bundle protocol or underwater protocols. From the point of view defending side, Underwater Acoustic Network (UAN) will be a serious threat for its strong functionality long rang and high precision of surveillance and detection. Therefore, countermeasures must be taken to weaken its effect. Our purpose is analyzed that how to benefit from the UIoT to learn from, exploit and preserve the natural underwater resources. Delay/Disruption Tolerant Network (DTN) is essential part of the network heterogeneity communication network. The vulnerability and potential security factors of UIoT are studied thereafter. Security mechanisms for an underwater environment are difficult to apply owing to the limited bandwidth. Therefore, for underwater security, appropriate security mechanisms and security requirements must be defined simultaneously. The paper consists of mathematical and security model. Most important point of view in the security challenges of effective Buffer and Storage management in DTN.

• 한국산학기술학회논문지
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• 제10권8호
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• pp.1911-1919
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• 2009

현재의 정보보호시스템 위험 분석 수준 측정에 대한 시험 평가업무는 미국, 영국을 비롯한 선진국에서만 평가 기술을 확보하고 있으나, 국내의 경우 위험분석 수준측정을 위한 인프라와 평가기술이 부족한 실정이다. 따라서 본 논문에서는 정보보안 위험분석 수준 측정 기술 및 평가방법에 대해 연구하고 이를 이용하여 보안통제항목의 개발 및 이를 적용한 보안 수준 성능 평가 도구를 제시한다. 제시한 도구를 이용한 정보보호 시스템의 보안 관리 수준 분석을 통해 현 시스템과 보안 환경에 대한 보안 관리 수준을 평가할 수 있을 것으로 기대된다.

• International Journal of Computer Science & Network Security
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• 제21권3호
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• pp.172-176
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• 2021

This study is conducted with an educational institution to minimize the potential security hazards to an acceptable level where the vulnerabilities and threats are revealed in this institution. The paper provides a general structure for the risk management process in educational institutions, and some recommendation that increases security levels is presented.

• 시큐리티연구
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• 제15호
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• pp.51-72
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• 2008

이 연구는 경호관련학과 학생들의 경호영어 능력 실태와 그 발전방안에 관한 연구에 목적을 두고 있다. 연구의 방법으로는 영어 능력에 관한 설문조사와 경호지식에 관한 간단한 테스트를 통하여 실태를 파악하였다. 일반 영어 및 경호영어 능력에 있어서 학생들의 현 실태는 전반적으로 매우 낮고 미흡한 것으로 나타났으며, 이로 인하여 개인들과 학교들의 적극적인 노력이 필요함을 인식하였다. 국내외 주요 인사 및 VIP를 경호하는 경호요원들은 국제적인 역량에 있어서 영어 의사소통능력이 필수적이며, 이를 위하여 졸업 후 원활한 취업 및 진로 준비에 도움이 될 수 있도록 경호관련학과 학생들은 대학 과정 중에 반드시 영어 의사소통 능력을 향상시켜야 할 필요가 있다. 교양영어 프로그램의 다양화를 통하여 일반영어 능력을 향상시켜야 하며, 더불어 전문적인 경호영어에 관한 능력 구비를 위하여 체계적인 학습과 노력이 필요하며, 또한 이를 위하여 각 대학들이 경호영어 커리큘럼 편성을 장려하여야 한다. 본 연구를 통하여 한국 경호관련학과에 경호영어의 중요성과 인식에 있어서 전환과 발전이 있기를 바라며, 그럼으로써 더욱 국제적인 자격과 역량을 갖춘 경호요원들이 많이 배출되기를 기대한다.

• 한국항해항만학회지
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• 제29권7호
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• pp.619-625
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• 2005

The security vulnerabilities in Korea maritime domain were mentioned and analysed with the static data of crimes relating to maritime security. The counterterrorism and initiatives to reduce the security risk and to minimize the damage are introduced and evaluated. The maritime security strategy and the near term initiatives to enhance the non-military security at Korean sea and ports are proposed in order to response maritime security threats economically, efficiently and safely.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권1호
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• pp.240-263
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• 2021

One of the biggest challenges that the software industry is facing today is to create highly efficient applications without affecting the quality of healthcare system software. The demand for the provision of software with high quality protection has seen a rapid increase in the software business market. Moreover, it is worthless to offer extremely user-friendly software applications with no ideal security. Therefore a need to find optimal solutions and bridge the difference between accessibility and protection by offering accessible software services for defense has become an imminent prerequisite. Several research endeavours on usable security assessments have been performed to fill the gap between functionality and security. In this context, several Multi-Criteria Decision Making (MCDM) approaches have been implemented on different usability and security attributes so as to assess the usable-security of software systems. However, only a few specific studies are based on using the integrated approach of fuzzy Analytic Network Process (FANP) and Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) technique for assessing the significant usable-security of hospital management software. Therefore, in this research study, the authors have employed an integrated methodology of fuzzy logic, ANP and TOPSIS to estimate the usable - security of Hospital Management System Software. For the intended objective, the study has taken into account 5 usable-security factors at first tier and 16 sub-factors at second tier with 6 hospital management system softwares as alternative solutions. To measure the weights of parameters and their relation with each other, Fuzzy ANP is implemented. Thereafter, Fuzzy TOPSIS methodology was employed and the rating of alternatives was calculated on the foundation of the proximity to the positive ideal solution.