• International Commerce and Information Review
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• v.3 no.2
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• pp.93-111
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• 2001

The purpose of this paper is to study the mechanism of Acquisition of Customer Knowledge through Web Site at Global Electronic Commerce Times in Korea. The major findings of this paper is that the models of inter-business alliance network for EC based on contents, types of participating company, categories of business of participating company, modes of alliances, and concentrated industry or function are various and complex. Therefore all companies should know this result and reflect in their business strategy.

• Proceedings of the Korea Contents Association Conference
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• 2003.05a
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• pp.189-193
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• 2003

정보화 사회가 도래하고 인터넷과 네트워크기술이 발전함에 따라 전자적 거래 등 원격지간의 비 대면 거래방식은 시대가 바뀜에 따라 피할 수 없는 현실이 되고 있으며, 이에 따른 시스템 불법침입에 의한 사고사례를 우리 주변에서 쉽게 접할 수 있다. 따라서, 인증되지 않은 외부 침입자로부터 시스템의 정보보호를 위한 많은 노력과 연구가 병행되어왔다. 즉, 침입탐지 시스템 및 암호화, 복호화 알고리즘을 적용하여 소프트웨어 측면에서의 보안기법과 Firewall 등의 하드웨어적인 보안기술이 도입 및 실용화 되고있는 것이다. 따라서, 본 논문은 침입 탐지 기법에 관련된 것들과 과 암호화 방식들의 소개 그리고 정보 보호 방안으로 내부적 안전을 위한 프로그램적 기법으로 데이터를 저장할 때 중요한 자료들을 데이터베이스에 저장할 때 SMA(Security Mapping Array)에 보관된 임의의 암호화 코트를 이용하여 암호화하여 저장하고 필요할 때 복호화 하는 시스템 내부적인 보안 방법을 제시하고자 한 다.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.1533-1536
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• 2008

악성 봇이 현대 인터넷 보안의 큰 위협으로 등장함에 따라, 이러한 봇을 탐지하기 위한 많은 연구가 진행되고 있다. 하지만 악성 봇은 꾸준히 진화하여 탐지방법을 무력화시키고 있으며, 최근 HTTP를 이용한 악성 봇의 등장으로 그 탐지와 대응이 더욱 어려워지고 있다. 게다가 웹기반 서비스들의 증가로 HTTP를 이용하는 패킷은 통신량의 대부분을 차지하고 있으며, 이들에 대한 분석은 큰 부하를 발생시키게 된다. 이러한 문제를 해결하기 위해서는 악성 봇넷을 효과적으로 탐지하기 위한 효율적인 매져들을 선택하여야 하며, 본 논문에서는 대표적인 HTTP 기반 악성 봇넷인 크라켄(Kraken) 봇넷의 특성을 분석하였다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.26 no.4
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• pp.1025-1036
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• 2016

The conversion of the international standard web utilization HTML5 technology is being developed for improvement of the internet environment based on nonstandard technology like ActiveX. Hyper Text Markup Language 5 (HTML5) of basic programming language for creating a web page is designed to consider the security more than HTML4. However, the range of attacks increased and a variety of security threats generated from HTML4 environment inherited by new HTML5 API. In this paper, we focus on the script-based attack such as CSRF (Cross-Site Request Forgery), Cookie Sniffing, and HTML5 API such as CORS (Cross-Origin Resource Sharing), Geolocation API related with the infringement of the personal information. We reproduced the infringement cases actually and embodied a detection module of a Plug-in type diagnosed based on client. The scanner allows it to detect and respond to the vulnerability of HTML5 previously, thereby self-diagnosing the reliability of HTML5-based web applications or web pages. In a case of a new vulnerability, it also easy to enlarge by adding another detection module.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.29 no.1
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• pp.175-185
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• 2019

The security control is to protect IT system from cyber infringement by deriving valid result values in the process of gathering and analyzing various information. Currently, security control is very effective by using SIEM equipment which enables analysis of systematic and comprehensive viewpoint based on a lot of data, away from analyzing cyber threat information with only fragmentary information. However, It can also be said that cyber attacks are analyzed and coped with the manual work of security personnel. This means that even if there is excellent security equipment, the results will vary depending on the user using. In case of operating a characteristic web service including information provision, This study suggests the basic point of security control through characteristics information analysis, and proposes a model for intensive security control through the type discovery and application which enable a step-wise analysis and an effective filtering. Using this model would effectively detect, analyze and block attacks.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.21 no.5
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• pp.181-195
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• 2011

There's a controversy about an invasion of privacy which includes a leakage of private information and linking of user's behavior on internet. Although many solutions for this problem are proposed, we think anonymous authentication, authorization, and payment mechanism is the best solution for this problem. In this paper, we propose an effective anonymity-based method that achieves not only authentication but also authorization. Our proposed method uses anonymous qualification certificate and group signature method as an underlying primitive, and combines anonymous authentication and qualification information. An eligible user is legitimately issued a group member key pair through key issuing process and issued some qualification certificates anonymously, and then, he can take the safe and convenience web service which supplies anonymous authentication and authorization. The qualification certificate can be expanded according to application environment and it can be used as payment token.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.31 no.6
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• pp.1261-1266
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• 2021

Existing information security risk assessment methods focus on evaluating the vulnerability of information assets. However, when the form of information assets changes and new types of information assets emerge, there is a limitation in that the evaluation standards for them are also added or deleted. Existing methods have insufficient research on the path through which cyber threats are introduced. In particular, there is very little research on blocking the inflow path for web-based information systems with public IPs. Therefore, this paper introduces the main research contents of the BDLA (Blockade and Defense Level Analysis)-based information security risk assessment model. In addition, by applying the BDLA-based information security risk assessment model, the information security risk level was studied by measuring the blockade level and security equipment level of 17 public institutions.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.6 no.6
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• pp.486-490
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• 2005

The web is used widely and the users of the majority are depending to get the information on web, the necessity of the data management by web is increasing. The sudden system failure frequently occurs from network environment, we must protect data from this danger. In this paper, we present web based data management method, which is composed of two type backup and restoration. This method support data management through web browser and provides systematic, efficient and stable data management on web.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.23 no.6
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• pp.1069-1086
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• 2013

Nowadays, web defacement becomes the utmost threat which can harm the target organization's image and reputation. These defacement activities reflect the hacker's political motivation or his tendency. Therefore, the analysis of the hacker's activities can give the decisive clue to pursue criminals. A specific message or photo or music on the defaced web site and the outcome of analysis will be supplying some decisive clues to track down criminals. The encoding method or used fonts of the remained hacker's messages, and hacker's SNS ID such as Twitter or Facebook ID also can help for tracking hackers information. In this paper, we implemented the web defacement analysis system by applying CBR algorithm. The implemented system extracts the features from the web defacement cases on zone-h.org. This paper will be useful to understand the hacker's purpose and to plan countermeasures as a IDSS(Investigation Detection Support System).

• Journal of the Korea Institute of Information Security & Cryptology
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• v.21 no.1
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• pp.53-63
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• 2011

An SNS(Social Network Service) enables people to form a social network on online as in the real world. With the rising popularity of the service, side effects of SNSs were issued. Therefore we propose and implement a policy-based privacy protection module and access control policy language for ensuring the right of control of personal information and sharing data among SNSs. The policy language for protecting privacy is based on an attribute-based access control model which grants an access to personal information based on a user's attributes. The policy language and the privacy protection module proposed to give the right of control of personal information to the owner, they can be adopted to other application domains in which privacy protection is needed as well as secure sharing data among SNSs.