• 융합보안논문지
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• 제19권5호
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• pp.55-61
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• 2019

본 논문은 갈수록 치밀해지고 정교해지는 위협으로부터 SCADA 망을 지키기 위한 보안 방안에 대해 연구하였다. 현재 SCADA 시스템 보안은 일반 IT 보안 시스템과 거의 유사한 방법이 사용되고 있다. 공통적으로 필요한 보안 기법들도 있겠지만, 일반 IT 시스템과는 다른 SCADA 시스템만을 위한 보안 기법이 필요한 실정이다. 따라서 본 논문은 현재 SCADA 시스템에 사용되는 보안 기법에 대해 알아보고, 현재 보안 기법을 사용하였을 시 생기는 문제점을 SCADA 시스템의 공격에 따른 피해 사례들을 통해 알아볼 예정이다. 마지막으로 현재 SCADA 시스템에 필요한 가용성과 무결성을 보장하기 위한 새로운 대응 방안으로 Blockchain 과 SCADA 시스템의 연계를 제안하였다.

• 융합보안논문지
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• 제8권3호
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• pp.101-106
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• 2008

조직의 정보시스템 보안을 향상시키기 위해서는 전략의 도입이 필수적이다. 그리고, 이들 전략을 조직내에 성공적 효율적으로 구현하기 위해서는 전략의 특성 중 전략의 구현에 영향을 주는 요인들을 고려하여야 한다. 본 논문에서는 전략의 여러 특성들 중 이러한 특성들을 연구하였다.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 2004년도 추계학술대회 및 정기총회
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• pp.147-157
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• 2004

Enterprises and governments currently utilize COTS based information systems which are a kind of component based systems. Especially, COTS are widely utilized as information security systems and information systems including information security functions. This paper suggests an appropriate adaptation level of security functional components and a cost effective priority among them. To make a cost effective decision on adapting security functional components, this paper develops a hierarchical model of information security technologies and analyzes findings through multiple decision-making criteria.

• Journal of Information Processing Systems
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• 제5권4호
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• pp.197-206
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• 2009

We introduce a novel high-level security metrics objective taxonomization model for software- intensive systems. The model systematizes and organizes security metrics development activities. It focuses on the security level and security performance of technical systems while taking into account the alignment of metrics objectives with different business and other management goals. The model emphasizes the roles of security-enforcing mechanisms, the overall security quality of the system under investigation, and secure system lifecycle, project and business management. Security correctness, effectiveness and efficiency are seen as the fundamental measurement objectives, determining the directions for more detailed security metrics development. Integration of the proposed model with riskdriven security metrics development approaches is also discussed.

• 한국멀티미디어학회논문지
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• 제18권11호
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• pp.1342-1350
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• 2015

Due to rapid development of mobile device technologies, the mobile banking through Internet has become a major service of banking information systems as a security-critical information systems. Recently, lots of mobile banking information systems which handle personal and transaction information have been exposed to security threats in vulnerable security control and management processes, mainly software systems. Therefore, in this paper, we propose a process model for software security improvements in mobile banking information system by application of fault tree analysis(FTA) and failure modes and effects analysis(FMEA) on the most important activities such as 'user authentication' and 'access control' and 'virus detection and control' processes which security control and management of mobile banking information systems are very weak.

• 스마트미디어저널
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• 제6권3호
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• pp.95-102
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• 2017

A large volume of research has been devoted to the development of security tools for protecting the Smart Grid systems, however the most of them have not taken the Availability, Integrity, Confidentiality (AIC) security triad model, not like CIA triad model in traditional Information Technology (IT) systems, into account the security measures for the electricity control systems. Thus, this study would propose a novel security framework, an abnormal behavior detection system, to maximize the availability of the control systems by considering a unique set of characteristics of the systems.

• 융합보안논문지
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• 제9권2호
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• pp.7-21
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• 2009

정보 시스템 보안 체계를 보다 체계적으로 구축하고 효율적으로 운영하기 위해서는 보안에도 전략이 도입되어야 한다. 또한, 전략이 구현되어 성공적으로 작동하기 위해서는 조직 차원의 참여가 필수적이다. 하지만, 조직의 정보 시스템 보안 전략에 관한 연구는 아직까지 전략적 사고에 의한 보안 체계의 배치와 운영에 초점이 맞추어져 있어, 조직 전체를 움직이고 이끌기 위한 총체적 프레임에 관한 연구는 부족한 실정이다. 따라서 본 논문에서는 조직 차원의 보안 전략 수립에 활용할 수 있는 프레임워크를 연구한다. 이를 위하여 조직 차원의 전략 수립이라는 측면에서 총괄 전략의 개념을 도입하였으며, 총괄 전략이 갖는 4차원적 특성을 기반으로 정보 시스템 보안 총괄 전략을 구성하기 위한 프레임워크를 제시한다.

• 시큐리티연구
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• 제8호
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• pp.197-218
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• 2004

This study has been conducted to provide data that contribute to increasing efficiency of 'Private Security', which is cooperated by customer, security companies and the police which carried out 'Public Law Enforcement' and controls security companies. To reach this purpose, we investigated the status of the 'Security Alarm Systems' operated by security service companied in Korea, analyzed arising problems, considered the polices for improving the operational quality. 'Electronic Security Systems' will increase working efficiency in performing 'Private Security'. There can be no two opinions on this matter. Therefore, it can be supposed that the improvement of operational quality of 'Electronic Security System' is an important factor to accomplish security services. 'Security Alarm System' is one of the 'Electronic Security System'. The critical problems in operating 'Security Alarm system' are unnecessary response by false alarm and nuisance alarm. To reduce the problems, it is suggested that security specialist officially licensed should improve security planning, installation and maintenance, and the 'Alarm Verification System' should be introduced with appropriate facilities.

• Asia pacific journal of information systems
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• 제18권4호
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• pp.1-26
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• 2008

Rapid progress of information technology and widespread use of the personal computers have brought various conveniences in our life. But this also provoked a series of problems such as hacking, malicious programs, illegal exposure of personal information etc. Information security threats are becoming more and more serious due to enhanced connectivity of information systems. Nevertheless, users are not much aware of the severity of the problems. Using appropriate password is supposed to bring out security effects such as preventing misuses and banning illegal users. The purpose of this research is to empirically analyze a research model which includes a series of factors influencing the effectiveness of passwords. The research model incorporates the concept of risk based on information systems risk analysis framework as the core element affecting the selection of passwords by users. The perceived risk is a main factor that influences user's attitude on password security, security awareness, and intention of security behavior. To validate the research model this study relied on questionnaire survey targeted on evening class MBA students. The data was analyzed by AMOS 7.0 which is one of popular tools based on covariance-based structural equation modeling. According to the results of this study, while threat is not related to the risk, information assets and vulnerability are related to the user's awareness of risk. The relationships between the risk, users security awareness, password selection and security effectiveness are all significant. Password exposure may lead to intrusion by hackers, data exposure and destruction. The insignificant relationship between security threat and perceived risk can be explained by user's indetermination of risk exposed due to weak passwords. In other words, information systems users do not consider password exposure as a severe security threat as well as indirect loss caused by inappropriate password. Another plausible explanation is that severity of threat perceived by users may be influenced by individual difference of risk propensity. This study confirms that security vulnerability is positively related to security risk which in turn increases risk of information loss. As the security risk increases so does user's security awareness. Security policies also have positive impact on security awareness. Higher security awareness leads to selection of safer passwords. If users are aware of responsibility of security problems and how to respond to password exposure and to solve security problems of computers, users choose better passwords. All these antecedents influence the effectiveness of passwords. Several implications can be derived from this study. First, this study empirically investigated the effect of user's security awareness on security effectiveness from a point of view based on good password selection practice. Second, information security risk analysis framework is used as a core element of the research model in this study. Risk analysis framework has been used very widely in practice, but very few studies incorporated the framework in the research model and empirically investigated. Third, the research model proposed in this study also focuses on impact of security awareness of information systems users on effectiveness of password from cognitive aspect of information systems users.

• 한국병원경영학회지
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• 제10권4호
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• pp.98-112
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• 2005

The purpose of this study is to develop a framework for evaluating security levels in hospitals. We classify security indicators into administrative, technical and physical safeguards. The security evaluation model for hospital information systems was applied to three general hospitals. The analysis of the results showed a low security level in information systems. In particular, requirements for administrative and physical safeguards were very low. Hospitals need strict security policies more than other organizations because their information systems contain patients' highly confidential data. The evaluation model developed in this study can be used for guidelines and as a checklist for hospitals. The security evaluation in hospital informational systems needs to be an essential element of hospital evaluation.