• Journal of Satellite, Information and Communications
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• v.12 no.4
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• pp.152-156
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• 2017

This paper introduces the concept of random security amplification to amplify security in a quantum key distribution system. It seems to provide security amplification using the relationship between quantum error correction and security. In addition;we show that random security amplification in terms of security amplification offers better security than using existing universal hash function. We explain how the universal hash function enhances security using the BB84 protocol, which is a typical example of QKD. Finally, the proposed random security amplification and the conventional scheme compare the security according to the key generation rate in the quantum QKD.

• KIPS Transactions on Computer and Communication Systems
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• v.6 no.7
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• pp.321-328
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• 2017

As the cyber threats become more sophisticated and intelligent, the cases of cyber-infringement accidents are rapidly increasing. As a result, awareness of the importance of cyber security professionals has led to many cyber security-related educational programs. These programs provided with education curriculum aimed because cyber security workforce and job-based cyber security education research are not properly done. In this study, we developed a new cyber security education curriculum that defines and reflects cyber security personnel and knowledge system. In this study is not composed solely of the education contents related to the defenses emphasized in the existing education curriculum, but developed education curriculum to train a professional and balanced cyber security manpower by adding education contents in the attack field.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.1
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• pp.634-640
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• 2020

The information security management system (ISMS) and the personal information management system (PIMS) have been integrated into a personal information & information security management system (ISMS-P) certification scheme in response to requests to reduce the time and cost to prepare certification schemes. Integration of the certification system has made it possible for the system operator to gain the advantage of easy management of the ISMS-P certification system, and the certification target organization can enjoy the advantage of easy acquisition and maintenance of certification. However, ambiguity in the application criteria of the target organization, and ambiguity in the certification criteria control items require the target organization to operate an excessive management system, and the legal basis to be applied to the certification target organization is ambiguous. In order to improve these problems, this paper uses case studies to identify the types of certification bodies that apply the certification criteria, and to change the control items applied during certification audits based on the types of certification bodies. Institutions that wish to obtain only ISMS certification have proposed three solutions, excluding controls covered by the ISMS-P. This paper suggests ways to operate an efficient certification system, and can be used as a basis for improving problems in the ISMS-P certification system.

• Journal of the Korea Society of Computer and Information
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• v.16 no.4
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• pp.101-110
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• 2011

A smart grid networks delivers electricity from suppliers to consumers using digital technology with two-way communications to control appliances at consumers' homes to save energy, reduce cost and increase reliability and transparency. Security is critically important for smart grid networks that are usually used for the electric power network and IT environments that are opened to attacks, such as, eavesdroping, replay attacks of abnormal messages, forgery of the messages to name a few. ZigBee has emerged as a strong contender for smart grid networks. ZigBee is used for low data rate and low power wireless network applications. To deploy smart grid networks, the collected information requires protection from an adversary over the network in many cases. The security mechanism should be provided for collecting the information over the network. However, the ZigBee protocol has some security weaknesses. In this paper, these weaknesses are discussed and a method to improve security aspect of the ZigBee protocol is presented along with a comparison of the message complexity of the proposed security protocol with that of the current ZigBee protocol.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.22 no.5
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• pp.1069-1078
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• 2012

It is known that memory has been frequently a target threatening the computer system's security while attacks on the system utilizing the memory's weakness are actually increasing. Accordingly, various memory protection mechanisms have been studied on OS while new attack techniques bypassing the protection systems have been developed. Especially, buffer overflow attacks have been developed as attacks of Return to Library or Return-Oriented Programing and recently, a technique bypassing the countermeasure against Return-Oriented Programming proposed. Therefore, this paper is intended to suggest a detection mechanism at binary level by analyzing the procedure and features of Jump-Oriented Programming. In addition, we have implemented the proposed detection mechanism and experimented it may efficiently detect Jump-Oriented Programming attack.

• The Journal of the Convergence on Culture Technology
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• v.9 no.5
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• pp.463-474
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• 2023

Advances in technology have made it easier for organizations to share information and collaborate. However, collaboration systems where multiple entities share and access information are vulnerable to security. The concept of Software Bill Of Materials (SBOM) has emerged as a way to strengthen information security by identifying and transparently managing the components of software programs. To promote the adoption of SBOM in Korea, this study investigated the intention to use of collaboration system managers. This study was based on the theory of planned behavior and the integrated technology acceptance theory. The results of this study confirmed that performance expectations from SBOM adoption were an important variable for intention to use, and positive attitudes toward security also had an indirect effect through performance expectations. We found that SBOM adoption has an important causal relationship with performance due to the fact that it is targeted at enterprises, and that positive attitudes toward security and social climate can have a strong effect on intention to use.

• The Journal of the Korea Contents Association
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• v.5 no.2
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• pp.107-114
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• 2005

This paper proposes to analyze a security level about information property systems. This method uses objective and quantitative risk level assessment. The method analyzes administrative, physical and technical aspects of information property system commonly. This method also uses administrative, physical and technical weights. Individually according to requirements security assessment purpose. And it shows risks weighting mean and importance of information property by graph. The most right and up systems in maps is prior to other systems. Also, Quantitative analysis presents more objective and efficient results for security level assessment of information system.

• Convergence Security Journal
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• v.15 no.5
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• pp.77-86
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• 2015

The organization shall minimize business risks associated with customer information leaks. Enhance information security activities through voluntary pre-check and must find a way to detect the personal information leakage caused by carelessness and neglect accident. Recently, many companies have introduced an information leakage prevention solution. However, there is a possibility of internal data leakage by the internal user who has permission to access the data. By this thread it is necessary to have the environment to analyze the habit and activity of the internal user. In this study, we use the SFI analytical technique that applies RFM model to evaluate the insider activity levels were carried out case studies is applied to the actual business.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.24 no.6
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• pp.1215-1224
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• 2014

Various research was done to protect user's private data from malicious application which expose user's private data and abuse exposed data. However, a new type of malicious application were appeared. And these malicious applications use a smart phone as a new tools to perform secondary attack. Therefore, in this paper, we propose a method to detect the DDoS attack application installed inside the mobile device using the Android logging system.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.21 no.4
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• pp.137-147
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• 2011

Because of the convergence between Internet and broadcast communication, users are able to use multimedia contents anytime. In addition, with the change of existing one-way service to two-way service, the provider can offer efficient and useful broadcast communication. However, As multimedia contents is provided by STB, it can validate only end-node STB. Thus, this method is limiting possibilities of individual service. Also, providers' STB are different, so problem of compatibility is emerging as an issue. Therefore, in this paper we proposed STB virtualization based enhanced IPTV user authentication system to improve individual authentication and compatibility of services.