• 융합보안논문지
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• 제6권1호
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• pp.25-32
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• 2006

본 논문에서 제시되는 MIR 시스템은 의료정보를 필요로 하는 어느 병원에서나 보건기관에서 즉시 사용할 수 있도록 전국적인 의무기록 정보 시스템을 구축하는 것으로 대부분 보안이 요구되는 자료들이다. 특히, 환자와 의사에 관련된 개인정보, 의료 전문기술 관련정보, 각 병원의 전산적 정보는 사용 빈도가 높고 정보의 변질을 통해 다른 목적으로 이용될 수 있는 가능성이 높다. 따라서 이러한 의료정보 서비스를 효과적으로 제공함과 동시에 정보의 유출을 방지하기 위한 보안대책이 강구된 시스템 개발이 필요하다.

• 한국컴퓨터정보학회논문지
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• 제20권7호
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• pp.49-56
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• 2015

In this paper, we introduce recent cloud system security technologies categorizing them according to Reliability, Availability, Serviceability, Integrity, and Security (RASIS), terms that evaluate robustness of the computer system. Then we describe examples of security attacks and corresponding security technologies for each of them. We introduce security technologies based on Software Defined Network (SDN) for Reliability, security technologies based on hypervisor and virtualization for Availability, disaster restoration systems for Serviceability, authorization and access control technologies for Integrity, and encryption algorithms for Security. We believe that this paper provide wise view and necessary information for recent cloud system security technologies.

• 한국컴퓨터정보학회논문지
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• 제23권11호
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• pp.75-84
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• 2018

Social engineering attack means to get information of Social engineering attack means to get information of opponent without technical attack or to induce opponent to provide information directly. In particular, social engineering does not approach opponents through technical attacks, so it is difficult to prevent all attacks with high-tech security equipment. Each company plans employee education and social training as a countermeasure to prevent social engineering. However, it is difficult for a security officer to obtain a practical education(training) effect, and it is also difficult to measure it visually. Therefore, to measure the social engineering threat, we use the results of social engineering training result to calculate the risk by system asset and propose a attack graph based probability. The security officer uses the results of social engineering training to analyze the security threats by asset and suggests a framework for quick security response. Through the framework presented in this paper, we measure the qualitative social engineering threats, collect system asset information, and calculate the asset risk to generate probability based attack graphs. As a result, the security officer can graphically monitor the degree of vulnerability of the asset's authority system, asset information and preferences along with social engineering training results. It aims to make it practical for companies to utilize as a key indicator for establishing a systematic security strategy in the enterprise.

• 한국정보시스템학회지:정보시스템연구
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• 제27권1호
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• pp.193-224
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• 2018

Purpose Targeting Korean companies listed on Korean securities markets (i.e., KOSPI and KOSDAQ markets), this study aims to shed lights the effects of personal information security breaches on stock prices of information security companies. Interestingly, this study is, to the best of our knowledge, the first to examine the information transfer effect on personal information security breaches of companies. Design / Methodology /Approach To examine the information transfer effect of personal information security breaches, our study employs the event study commonly used in financial studies. To this end, we investigate a variety of events of personal information security breaches of companies listed on the KOPSI stock market and the KOSDAQ market. We collect the total samples of one hundred and twelve with forty seven of events of personal information security breaches by thirty companies and sixty five of information security companies. Findings The principal findings from the empirical study are as follows. First, for companies of personal information security breaches, our event study presents the significantly negative AAR (averaged abnormal return) value on the event day at the 5 % level and the highly significant negative CAAR(cumulative averaged abnormal return) value on the event day and the day after the event day at the 1 % level. The results suggest that personal information breaches significantly contribute to an decrease in value of the information breached companies. The cross sectional regressions in this study estimate the significantly negative coefficient for the ME/BE variable, the proxy for a growth opportunity at the 5 % level. This suggests a reverse relation between the growth opportunity of companies and their value. As for the various samples of the information security companies categorized by physical security, network and system security, security application software, code authentication, system integration, we find the significantly positive AAR on the day after the event day at the 5% level, only for the network and system security-companies. This addresses that the information transfer effect followed by personal information breaches is uniquely observable for companies categorized into network and system companies. The regressions for the network and system companies estimate the significantly positive coefficient for the NS dummy variable (i.e., the dummy of the network and system security companies) at the standard level. This allows us to identify appropriate times needed to make the information transfer effect realized from personal information breached companies to information security companies.

• 정보보호학회논문지
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• 제14권3호
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• pp.85-100
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• 2004

모든 정보시스템은 보안기능이 강화된 정보보호시스템이라 할 수 있으며, 정보보호시스템의 품질을 높이기 위해서는 초기 요구사항 분석 단계에서 보안요구사항을 정형적이며 일관적으로 분석 및 명세하여야 한다. 본 논문에서는 UML의 Use Case 모델을 확장한 Misuse Case 모델을 이용하여 보안요구사항을 분석 및 명세하는 모델과 프로세스를 제시하였으며, 도출된 보안기능요구사항들을 제품화한 비용효과적인 보안제품 선정 알고리즘을 제시하였다. 제시한 모델 및 프로세스를 통해 개발된 정보보호시스템의 품질을 제고할 수 있을 것이다

• 정보보호학회논문지
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• 제33권3호
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• pp.577-589
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• 2023

국방부는 국방혁신 4.0 계획에 기반한 첨단과학기술군 육성을 위해 AI를 향후 전력 증강의 핵심 기술로 활용할 계획이다. 그러나 AI의 특성에 따른 보안 위협은 AI 기반의 국방정보시스템에 실질적인 위협이 될 수 있다. 이를 해소하기 위해서는 최초 개발 단계에서부터 체계적인 보안 활동의 수행을 통한 보안 내재화가 필요하다. 이에 본 논문에서는 AI 기반 국방정보시스템 개발 시 단계별로 수행해야 하는 보안 활동 수행 방안을 제안한다. 이를 통해 향후 국방 분야에 AI 기술 적용에 따른 보안 위협을 예방하고 국방정보시스템의 안전성과 신뢰성을 확보하는데 기여할 수 있을 것으로 기대한다.

• International Journal of Computer Science & Network Security
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• 제22권6호
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• pp.19-24
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• 2022

The main purpose of the study is to analyze the current state of the organization's information security system in the context of COVID-19 on the basis of public-private partnership. The development of public-private interaction in information security is one of the priorities of the state policy of many estates. Among the priorities of public-private partnership in cybersecurity and information security, there is an expansion of interaction between government agencies and private scientific institutions, public associations and volunteer organizations, including in training, as well as increasing the digital literacy of citizens and the security culture in cyberspace. As a result of the study, the foundations of the organization's information security system in the context of COVID 19 were formed on the basis of public-private partnership.

• 한국컴퓨터정보학회논문지
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• 제22권10호
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• pp.93-100
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• 2017

Current internet has evolved from the sharing and efficiency aspects of information, it is still vulnerable to the fact that the Internet is not secure in terms of security and is not safe to secure of security mechanism. Repeating patches on continuous hacking are continuously demanding additional resources for network or system equipment, and consequently the costs continue to increase. Businesses and individuals alike are speeding up the damage caused by crime like of ransomware, not jusy simple attacks, and businesses and individuals need to respond to cyber security. In addition, the ongoing introduce of security device, and separate of networks for secure transmission of contents in the existing TCP/IP system, but it is still lacking in security. To complement the security implications of this existing TCP/IP Internet Protocol, we intend to propose a Secure Contents Transport System (SCTS) on the network using the CCN concept.

• 한국정보보호학회:학술대회논문집
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• 한국정보보호학회 2002년도 종합학술발표회논문집
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• pp.266-269
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• 2002

As a simulation or replacement of analog money in cyber space, the e-cash was introduced by using cryptographic primitives. Since a perfect anonymity system causes some illegal activities, such as money laundering, blackmailing, and illegal purchase, a revocable electronic system was paid a great attention to control the anonymity. In general, Trust Third Party(TTP) is introduced to detect any dubious user and coin, namely user tracing and coin tracing. In this paper we propose a new revocable anonymity e-cash system, and verify the security requirement as well. In our scheme a user first withdraws the e-coin from bank by using blind signature, and then TTP verifies the bank's signature and records the tracing information.

• 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.