• IEIE Transactions on Smart Processing and Computing
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• 제1권2호
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• pp.95-105
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• 2012

The widespread implementation of RFID in ubiquitous computing is constrained considerably by privacy and security unreliability of the wireless communication channel. This failure to satisfy the basic, security needs of the technology has a direct impact of the limited computational capability of the tags, which are essential for the implementation of RFID. Because the universal application of RFID means the use of low cost tags, their security is limited to lightweight cryptographic primitives. Therefore, EPCGen2, which is a class of low cost tags, has the enabling properties to support their communication protocols. This means that satisfying the security needs of EPCGen2 could ensure low cost security because EPCGen2 is a class of low cost, passive tags. In that way, a solution to the hindrance of low cost tags lies in the security of EPCGen2. To this effect, many lightweight authentication protocols have been proposed to improve the privacy and security of communication protocols suitable for low cost tags. Although many EPCgen2 compliant protocols have been proposed to ensure the security of low cost tags, the optimum security has not been guaranteed because many protocols are prone to well-known attacks or fall short of acceptable computational load. This paper proposes a remedy protocol to the flyweight RFID authentication protocol proposed by Burmester and Munilla against a desynchronization attack. Based on shared pseudorandom number generator, this protocol provides mutual authentication, anonymity, session unlinkability and forward security in addition to security against a desynchronization attack. The desirable features of this protocol are efficiency and security.

• Journal of Information Processing Systems
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• 제16권1호
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• pp.61-82
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• 2020

The security risk management used by some service providers is not appropriate for effective security enhancement. The reason is that the security risk management methods did not take into account the opinions of security experts, types of service, and security vulnerability-based risk assessment. Moreover, the security risk assessment method, which has a great influence on the risk treatment method in an information security risk assessment model, should be security risk assessment for fine-grained risk assessment, considering security vulnerability rather than security threat. Therefore, we proposed an improved information security risk management model and methods that consider vulnerability-based risk assessment and mitigation to enhance security controls considering limited security budget. Moreover, we can evaluate the security cost allocation strategies based on security vulnerability measurement that consider the security weight.

• 한국융합학회논문지
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• 제9권9호
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• pp.69-81
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• 2018

본 연구의 목적은 정보보안 정책 준수 의도의 선행변수인 정보보안에 대한 인지된 중요성에 유의한 영향을 미치는 요인을 규명하는 것이다. 이를 위해 구조방정식 모형을 기반으로 제안 모형을 분석했다. 분석결과, 첫째, 정보보안 교육의 효과성은 정책 준수에 따른 인지된 비용에 통계적으로 유의한 영향을 미치지 못하는 것으로 나타났다. 둘째, 정보보안 정책의 효과성은 정책 준수에 따른 인지된 비용에 유의한 영향을 미치는 것으로 나타났다. 셋째, 인지된 취약성은 정책 준수에 따른 인지된 비용에 유의한 영향을 미치는 것으로 나타났다. 넷째, 정책 준수에 따른 인지된 비용은 정보보안에 대한 인지된 중요성에 유의한 영향을 미치는 것으로 나타났다. 다섯째, 정보보안 침묵에 대한 경영진의 태도는 구성원들의 보안 침묵 행위에 유의한 영향을 미치는 것으로 나타났다. 여섯째, 정보보안에 대한 의사소통 기회는 구성원들의 보안 침묵 행위에 유의한 영향을 미치는 것으로 나타났다. 마지막으로 구성원들의 보안 침묵 행위는 정보보안에 대한 인지된 중요성에 유의한 영향을 미치는 것으로 나타났다.

• 대한안전경영과학회지
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• 제14권3호
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• pp.119-126
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• 2012

Recently, the breakdown of online banking servers and the leakage of customer information give rise to much concern about the security of information systems in financial and banking companies in Korea. The enforcement of security for information system becomes much more important issue than earlier. However, the security reinforcement of information system is restricted by a budget. In addition, the activities' cost to secure information system from threatening are under uncertain circumstances and should be established by a human decision maker who is basically uncertain and vague. Thus, making the budget for information system is exposed to any extent of the risk for these reasons. First, we introduce brief fuzzy set theory and fuzzy AHP (Analytic Hierarchy Process) methodology. Then, the cost elements that comprise yearly budget are presented and the priorities among the cost elements are calculated by fuzzy AHP. The cost elements that are exposed to risk are evaluated from the both perspectives of the risk impact and risk occurrence possibility which are expressed as linguistic terms. To get information on the risk profiles-pessimistic, most likely, and optimistic-for each cost element, the evaluation is accomplished and the result is presented. At last, the budget ranges-minimum, mode, maximum-for each cost element are estimated with the consideration of the risk profiles.

• 융합보안논문지
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• 제13권1호
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• pp.11-17
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• 2013

본 논문에서는 MANET(Mobile Ad-hoc Network) 환경에서의 보안 요구사항과 DDoS(Distributed Denial of Service) 공격방지를 위한 보호노드(게이트웨이) 설정 알고리즘을 제시한다. 이를 위하여, 정보보호를 위한 기반 기술 및 네트워크 응용기술과 보안위협을 분석하고 MANET에서 필수적으로 요구되는 보안 요구사항을 제시하며, 송신과 수신노드 사이 정보전달시 DDoS 공격을 효과적으로 방어하기 위한 보호노드 설정 알고리즘을 제시하고 성능을 분석한다. 보호노드 설정시 보호노드와 수신노드들 사이의 총링크 비용의 최대값을 최소화하는 경우와 평균비용을 최소화하는 경우로 구분하여 성능을 분석하며, 각 알고리즘의 성능을 All Enumeration 기법을 이용하여 구한 최적해와 비교, 분석한다. 분석결과, 보호노드와 수신노드들 사이의 최대비용을 이용하는 경우보다 평균비용을 이용하여 보호노드를 설정하는 경우 송신과 수신 노드들 사이의 총비용이 최소화됨을 알 수 있다.

• International Journal of Contents
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• 제7권3호
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• pp.71-81
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• 2011

This paper is mainly associated with setting out an agenda for the transformation of security by creating a new framework for a security system, which can maximise its effectiveness. Noticeably, this research shows empirically that crimes are getting a major cost to organisations, which if reduced by security and investigations could reap substantial rewards to the finances of an organisation. However, the problem is that the delivery of security is frequently delegated to personnel (e.g. security guards) with limited training, inadequate education, and no real commitment to professionalism - 'sub-prime' security, finally causing security failures. Therefore, if security can be enhanced to reduce the crime cost, this will produce financial benefits to business, and consequently could produce a competitive advantage. For this, the paper basically draws upon Luke's theoretical framework for deconstructing 'power' into three dimensions. Using this three-dimensional approach, the paper further sets out a model of how security can be enhanced, utilising a new Security Risk Management (SRM) model, and how can this SRM model create competitive advantage in business. Finally, this paper ends with the six strategies needed to enhance the quality of security: refiguring as SRM, Professional Staff, Accurate Measurement, Prevention, Cultural Change, and Metrics.

• International Journal of Computer Science & Network Security
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• 제24권7호
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• pp.63-72
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• 2024

This is an extended paper, focusing on the cost management for the organizations dealing with the crucial issues of security systems. Information Technology (IT) is an important and irreplaceable need of society and all working sector's success depends on IT to a greater extent; therefore maintaining security features is one of the most important aspects of IT. When security in the IT sector is discussed, Patch Management (P.Mgnt) has to be taken under account. P. Mgnt includes many concerns and areas to be described for IT security such as methods and problems in updating patch, methods of reducing security risks with P.Mgnt, methods of achieving economies of scale by controlling the operational costs and taking decisions in investing as and when necessary. This paper presents a general definition of Patch management, its benefits and management of working cost through theoretical models, also the paper gives methods of feeding techniques for microstrip patch antenna MPA, showing the contracting and non contracting methods.

• Journal of Information Technology Applications and Management
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• 제16권2호
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• pp.23-43
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• 2009

For reliability and confidentiality of information security systems, the security engineering methodologies are accepted in many organizations. To improve the effectiveness of security engineering, this paper suggests a security methodology ISEM, which considers both product assurance and production processes, takes advantages in terms of quality and cost. To verify the effectiveness of ISEM, this paper introduces the concepts of quality loss, and compares the development costs and quality losses between ISEM and CC through the development of VPN system.

• Journal of Information Technology Applications and Management
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• 제11권1호
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• pp.39-51
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• 2004

Application systems outsourcing is an important part of IT outsourcing services. Application systems outsourcing costs is determined by service levels of outsourcers. Recent researches show there is a strong need to build industry-specific cost estimation models. In this study, an industry-specific application systems operation cost estimation model is suggested. We reviewed operation cost models of previous researches, and proposed a cost estimation model for security industry. Industry-specific service factors are defined and service levels are determined by Interviews with experts. The proposed model is tested and adjusted with empirical data. The new model shows more accurate prediction than previous general models. Future research will be needed to develop outsourcing cost estimation models for other industries and to refine cost models developed in this study.

• 한국경영과학회지
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• 제34권3호
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• pp.155-163
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• 2009

We develop a probability model to evaluate information security investment portfolios. We assume that organizations install portfolios of information security countermeasures to mitigate the damage such as loss of the transaction being processed, damage of hardware and data, etc. A queueing model and Its expected value analysis are used to derive the lost cost of transactions being processed, the replacement cost of hardwares, and the recovery cost of data. The net present value for each portfolio is derived and organizations can select the optimal information security investment portfolio by comparing portfolios.