• Convergence Security Journal
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• v.7 no.2
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• pp.65-71
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• 2007

Recently, security softwares are the program that is to protect the users from hackers in using electronic financial services. However heackers commit financial crimes to extort asserts using known hacking skills. In our paper, we analyse vulnerability that can be used to hook financial information in user application area and explain end-to-end encryption which is able to be provided by interacting keyboard security program and PKI application program.

• Journal of the Korea Society of Computer and Information
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• v.20 no.8
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• pp.35-43
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• 2015

Recently, internal information leaks is increasing rapidly by internal employees and authorized outsourcing personnel. In this paper, we propose a method to integrate internal control systems like system access control system and Digital Rights Managements and so on through expansion model of SIEM(Security Information Event Management system). this model performs a analysis step of security event link type and validation process. It develops unit scenarios to react illegal acts for personal information processing system and acts to bypass the internal security system through 5W1H view. It has a feature that derives systematic integration scenarios by integrating unit scenarios. we integrated internal control systems like access control system and Digital Rights Managements and so on through expansion model of Security Information Event Management system to defend leakage of internal information and customer information. We compared existing defense system with the case of the expansion model construction. It shows that expanding SIEM was more effectively.

• Annual Conference of KIPS
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• 2003.11c
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• pp.1839-1842
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• 2003

핑거프린팅은 컨텐츠 유통 시, 구매자의 정보를 컨텐츠에 삽입함으로써 불법 유통 행위된 컨텐츠에 대하여 불법 배포자를 추적할 수 있는 기법이다. 이 방법에는 서로 다른 구매자에 의한 핑거프린팅코드를 제거하려는 공모 공격(collusion attacks)이 발생할 수 있다. 본 논문에서는 고차의 원시다항식을 이용하여 효율적이면서 공모 공격에 강인한 핑거프린팅 코드 구성 방법을 제안한다. 그리고, 제안된 방법을 오디오 데이터에 적용하여 공모 공격에 대하여 안전한 코드임을 보이고 있다.

• Annual Conference of KIPS
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• 2014.11a
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• pp.395-398
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• 2014

데스크톱 애플리케이션은 제품 활성화를 위해 제품번호나 라이선스 키, 아이디-패스워드를 이용한 인증을 활용한다. 그러나 크랙, 패치, 인증서버 우회로 인한 불법 복제 프로그램 사용 및 사용자 권한 도용이 끊이질 않고 있다. 본 논문에서는 국내외 소프트웨어 품질 향상과 정품 소프트웨어 사용 및 안전한 인증을 위해 도입해야할 기본적인 보안 요구사항을 연구하고 검증하였다.

• Proceedings of the Korea Contents Association Conference
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• 2019.05a
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• pp.311-312
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• 2019

최근 기업의 클라우드 도입 확산으로 인해 정보자산이 분산됨에 따라 보호해야 하는 접점이 점차 증가 되고 있다. 또한, 모바일의 업무 활용 증가, 망 분리 및 내부 사설 클라우드의 도입 등 기업 내 변화된 IT 환경으로 인해 네트워크 구성이 더욱 더 복잡해지고 있으며, 이로 인해 보안 수준 유지가 어려워지고 있다. 특히, 클라우드 컴퓨팅에서는 보호해야 하는 자원이 기업 외부에 분산되어 있어 기존처럼 경계를 구축하는 것은 어려운 일이다. 본 논문에서는 CSA가 주도하는 SDP 표준화 동향 및 SDP의 구성요소와 동작 원리에 대한 연구를 진행하고, 핵심 기술인 SPA 및 Dynamic Firewall 기술을 활용하여 기존 접근통제 방식의 문제점을 개선하기 위한 방안을 제시하고자 한다.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 2003.07a
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• pp.223-226
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• 2003

정보화 사회에서 네트워크는 현실과 밀접한 관련이 있고 사람들이 많이 이용하는 네트워크에 있어서 알고는 있지만 잘 인지하지 못하고 있는 악성 코드 및 프로그램인 바이러스, 웜, 트로이목마에 대하여 설명하고 이들이 보안과 어떤 관계가 있는가에 대하여 알아본다. 본 논문에서는 이들의 공격 및 전파 방법을 알아보고 이를 통하여 해킹의 위험성이 존재함을 밝힌다.

• Journal of Advanced Navigation Technology
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• v.14 no.6
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• pp.935-950
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• 2010

The purpose of this study is to try to find out the relationship between the perception and behavior of employees and the Information Security Governance (ISG) which consists of leadership and governance, security management and organization, security policies, security program management, user security management, and technology protection and operations. Some effective suggestions from the verification of research hypotheses and the analysis of the most appropriate model were drawn out.

• Journal of the Korea Society of Computer and Information
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• v.24 no.12
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• pp.59-65
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• 2019

Hospital Information System includes a wide range of information in the medical profession, from the overall administrative work of the hospital to the medical work of doctors. In this paper, we proposed a Vision-based Authentication and Registration of Facial Identity in Hospital Information System using OpenCV. By using the proposed security module program a Vision-based Authentication and Registration of Facial Identity, the hospital information system was designed to enhance the security through registration of the face in the hospital personnel and to process the receipt, treatment, and prescription process without any secondary leakage of personal information. The implemented security module program eliminates the need for printing, exposing and recognizing the existing sticker paper tags and wristband type personal information that can be checked by the nurse in the hospital information system. In contrast to the original, the security module program is inputted with ID and password instead to improve privacy and recognition rate.

• The Journal of Information Systems
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• v.28 no.4
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• pp.105-129
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• 2019

Purpose Issues related to information security have been a crucial topic of interest to researchers and practitioners in the IT/IS field. This study develops a research model based on a Structure-Conduct-Outcome (SCO) framework for the social exchange relationship between employees and organizations regarding information security. Design/methodology/approach In applying an SCO framework to information security, structure and conduct are activities imposed on employees within an organizational context; outcomes are activities that protect information security from an employee. Data were collected from 438 employees working in manufacturing and service firms currently implementing an information security policy in South Korea. Structural equation modeling (SEM) with AMOS 22.0 is used to test the validation of the measurement model and the proposed casual relationships in the research model. Findings The results demonstrate support for the relationships between predicting variables in organization structure (security policy and physical security system) and the outcome variables in organization conduct (top management support, security education program, and security visibility). Results confirm that the three variables in organization conduct had a positive effect on individual outcome (security knowledge and compliance intention).

• Journal of the Korea Institute of Information Security & Cryptology
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• v.27 no.4
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• pp.803-810
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• 2017

Recently, social security problems have been caused by the development of the software industry, and a variety of automation techniques have been used to verify software stability. In this paper, we propose a method of automatically detecting a use-after-free vulnerability on Windows system calls using dynamic symbolic execution, one of the software testing methods. First, a static analysis based pattern search is performed to select a target point. Based on the detected pattern points, we apply an induced path search technique that blocks branching to areas outside of interest. Through this, we overcome limitations of existing dynamic symbolic performance technology and verify whether vulnerability exists at actual target point. As a result of applying the proposed method to the Windows system call, it is confirmed that the use-after-free vulnerability, which had previously to be manually analyzed, can be detected by the proposed automation technique.