• 정보보호학회논문지
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• 제21권5호
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• pp.95-108
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• 2011

지능형 전력망은 전력기술에 정보통신 기술을 접목하여 친환경, 고효율, 고신뢰의 지능화된 차세대 전력시스템이다. 이는 종래의 전력 네트워크와는 달리 수용가 및 전력 생산자와 전력망 운영 주체 사이의 양방향 정보 교환을 통해 보다 안정적이고 효율적으로 전력을 공급하도록 한다. 또한 재생 에너지원을 전력계통 운영에 포함시킴으로써 환경문제에도 도움을 준다. 하지만 지능형 전력망은 양방향 서비스, 중 소규모 에너지원의 증가, 다량의 센서 및 제어기기의 설치 등으로 많은 사이버 보안 위협을 지닌다. 이러한 사이버 위협은 한 번의 실수로 큰 피해를 입게 되는 국가전력망에 있어서 치명적인 문제가 된다. 따라서 이러한 사이버 보안 위협을 해소하기 위해 지능형 전력망의 사이버보안 전략을 수립하고, 이를 개발 단계에서부터 실제 도입단계에 이르는 전 과정에서 적용해야 한다. 본 논문에서는 지능형 전력망의 사이버 보안 위협을 분석하고 이를 해소할 수 있는 지능형 전력망에 필요한 사이버 보안전략을 제안한다. 사이버 보안전략을 지능형 전력망에 적용함으로써 안전하고 신뢰성 있는 지능형 전력망 구축의 초석이 될 것으로 기대된다.

• International Journal of Computer Science & Network Security
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• 제21권4호
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• pp.249-254
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• 2021

Our society is depending on mobile devices that play a major role in our lives. Utilizing these devices is possible due to their speed power and efficiency in performing basic as well as sophisticated operations that can be found in traditional computers like desktop workstations. The challenge with using mobile devices is that organizations are concerned with the interference between personal and corporate use due to Bring Your Own Device (BYOD) trend. This paper highlights the importance of mobile devices in our daily tasks and the associated risks involved with using these devices. Several technologies and countermeasures are reviewed in this paper to secure the mobile devices from different attempts of attacks. It is important to mention that this paper focuses on technical measures rather than considering different aspects of security measures as recommended by the cybersecurity community.

• 한국전자거래학회지
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• 제24권4호
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• pp.79-107
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• 2019

전통적으로 은행 등 금융기관은 자신이 관리하는 고객의 계좌와 정보를 이용하여 지배적인 위치에서 금융서비스를 제공하여 왔다. 최근 유럽연합은 지급결제서비스지침을 개정하여 고객계좌에 대한 접근과 계좌 관련 정보의 제공을 제3자에게도 허용하는 것을 제도적으로 보장하여, 금융시장에서 경쟁을 촉진하고 혁신을 도모하고 있다. 그렇지만 이러한 변화는 잠재적인 보안위험을 증가시킬 수 있으며, 따라서 신·구 시장참여자 모두가 금융시장에서 보안위험에 적합하게 대응할 수 있도록 금융당국의 제도적인 대응이 요구된다. 본 연구에서는 유럽연합의 새로운 지급결제서비스지침(Payment Service Directive, PSD2)에서 확인할 수 있는 보안위험에 대한 제도적 대응을 분석하고 이를 국내의 전자금융규제와 비교·분석하여 시사점을 도출함으로써 국내 전자금융규제의 개선 방향을 제안하고자 한다.

• International Journal of Computer Science & Network Security
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• 제22권6호
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• pp.390-399
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• 2022

Cyber security and resilience are phrases that describe safeguards of ICTs (information and communication technologies) from cyber-attacks or mitigations of cyber event impacts. The sole purpose of Risk models are detections, analyses, and handling by considering all relevant perceptions of risks. The current research effort has resulted in the development of a new paradigm for safeguarding services offered online which can be utilized by both service providers and users. customers. However, rather of relying on detailed studies, this approach emphasizes task selection and execution that leads to successful risk treatment outcomes. Modelling intelligent CSGs (Cyber Security Games) using MLTs (machine learning techniques) was the focus of this research. By limiting mission risk, CSGs maximize ability of systems to operate unhindered in cyber environments. The suggested framework's main components are the Threat and Risk models. These models are tailored to meet the special characteristics of online services as well as the cyberspace environment. A risk management procedure is included in the framework. Risk scores are computed by combining probabilities of successful attacks with findings of impact models that predict cyber catastrophe consequences. To assess successful attacks, models emulating defense against threats can be used in topologies. CSGs consider widespread interconnectivity of cyber systems which forces defending all multi-step attack paths. In contrast, attackers just need one of the paths to succeed. CSGs are game-theoretic methods for identifying defense measures and reducing risks for systems and probe for maximum cyber risks using game formulations (MiniMax). To detect the impacts, the attacker player creates an attack tree for each state of the game using a modified Extreme Gradient Boosting Decision Tree (that sees numerous compromises ahead). Based on the findings, the proposed model has a high level of security for the web sources used in the experiment.

• Journal of Information Technology Applications and Management
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• 제24권4호
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• pp.117-131
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• 2017

We question whether Korean IT managers consider real options to reduce risks of cloud service implementation. This work investigates the impact of technology risk, relationship risk, economy risk, security risk upon the intention of IT managers to utilize abandon & expansion options. We also analyze moderation effect of centralization level of decision making between these risks and the utilization of real options. Using the survey questionnaire, we empirically find that technology risk, relationship risk and security risk have significant effect upon abandon option and technology risk, relationship risk, and economy upon expansion option. We also find the evidence that centralization level moderates some risks and the direction of moderation effect is to offset the effect of risks on intention to utilize real options.

• 정보보호학회논문지
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• 제24권4호
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• pp.681-694
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• 2014

2011년 대형 금융 사고가 연달아 발생하자 정부는 인력, 조직, 예산을 포함한 전자금융감독 규정 전면 개정을 발표했다. 규정에 주요 내용은 전자금융거래법 대상 기업들은 전체 직원의 5%를 IT인력으로 채용하고, IT인력의 5%는 보안인력으로, 또 IT예산의 7%는 정보보호 예산으로 편성하게 하는 내용이었다. 본 연구는 전자금융감독 규정 전면 개정에 따른 금융보안 리스크 기반의 IT도급 정책 결정 방안에 대해 연구하였다. 외주인력 문제를 해결하기 위한 정책 결정 Flow를 제공하고 IT 업무 분류 시 프로그램 품질 향상을 위한 개선 방안과 사례 연구를 통해 외주 인력의 효율적 운영정책을 제시하고자 한다.

• Asia pacific journal of information systems
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• 제10권2호
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• pp.149-176
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• 2000

As companies become more dependent upon information systems(IS), the potential losses of IS resources become critical. IS management must assume the increasing responsibility for protection of IS resources as the IS and business environments become more vulnerable to various threats. The major issues facing management, when attempting to manage risks, include the assessment of the impact of risks on business objectives and the design of security safeguards to reduce the unacceptable risks to an acceptable level. This paper provides a case study of the risk management for IS. A Korean credit card company which has the high sensitivity for customers security was selected as a case. The risk management procedure using a powerful tool, CRAMM(the Central Computer and Telecommunications Agencys Risk Analysis and Management Method) was applied for this company.

• 디지털산업정보학회논문지
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• 제12권4호
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• pp.89-96
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• 2016

Before an IT product is used, there is a sequence of the process such as the components supply-demand of the product, their assembly and production, their logistics and delivery, and then finally, the product can be used by a user. During this sequence of the process, there can be many security exposures and risks. In this paper, we show, by examining security cases of various IT products, that there are many security exposures in the process of IT products from their production to their delivery to end users and in their use, and also show how critical the security exposures are. Even though there are various security theories, technologies and security controls, there is still weak link from the production of an IT product to its use, and this weak link can lead to security vulnerabilities and risks. This paper tries to call attention to the importance of the execution of the security control and the control components. We examine the practical cases to find out how the security control is paralyzed, and to show how it is compromised by asymmetric security resources. Lastly, from the cases, we examine and review the possible domestic security issues and their countermeasures.

• 지식경영연구
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• 제20권4호
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• pp.39-55
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• 2019

Although Firms have been increasing their information security significantly to handle increased security risks, the effects of information security were not well understood. This study aims to investigate the market value of information security by employing the event study methodology. Our research also explores how market responses vary depending on the type of information security announcements. We collected 177 firm-level information security announcements between 2001 and 2017 in South Korea. For all samples, our results indicate that the stock market positively reacts to information security announcements. We also conducted subsample analysis and found that while information security certification announcement has a positive impact on the stock market, information security activities (e.g. award, information security system) announcement had no impact on the stock market. Our study adopted a novel approach (i.e. event study) for investigating the effects of information security and found that information security investment positively affects firm value. Our results allow managers to measure the effects of information security investment and help them make right decisions on information security investment.

• 디지털산업정보학회논문지
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• 제14권2호
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• pp.19-25
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• 2018

With the development of IT technology, various services such as artificial intelligence and autonomous vehicles are being introduced, and many changes are taking place in our lives. However, if secure security is not provided, it will cause many risks, so the information security becomes more important. In this paper, we analyzed the research trends of main themes of information security over time. In order to conduct the research, 'Information Security' was searched in the Web of Science database. Using the abstracts of theses published from 1991 to 2016, we derived main research topics through topic modeling and time series regression analysis. The topic modeling results showed that the research topics were Information technology, system access, attack, threat, risk management, network type, security management, security awareness, certification level, information protection organization, security policy, access control, personal information, security investment, computing environment, investment cost, system structure, authentication method, user behavior, encryption. The time series regression results indicated that all the topics were hot topics.