• The Journal of Society for e-Business Studies
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• v.27 no.2
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• pp.65-77
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• 2022

Due to the recent development in electronic financial services, transactions of electronic prepayment are rapidly growing, leading to growing fraud attempts. This paper proposes a methodology that can effectively detect fraud transactions in electronic prepayment by machine learning algorithms, including support vector machines, decision trees, and artificial neural networks. Actual transaction data of electronic prepayment services were collected and preprocessed to extract the most relevant variables from raw data. Two different approaches were explored in the paper. One is a transaction-based approach, and the other is a user ID-based approach. For the transaction-based approach, the first model is primarily based on raw data features, while the second model uses extra features in addition to the first model. The user ID-based approach also used feature engineering to extract and transform the most relevant features. Overall, the user ID-based approach showed a better performance than the transaction-based approach, where the artificial neural networks showed the best performance. The proposed method could be used to reduce the damage caused by financial accidents by detecting and blocking fraud attempts.

• The Journal of Information Technology
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• v.4 no.4
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• pp.113-128
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• 2001

The international trade industry is on the brink of a radical Internet-driven transformation. TradeCard is a payment and settlement system that is an alternative to letters of crdeit. That is, TradeCard is a business-to-business e-commerce infrastructure that enables buyers and sellers to conduct and settle international trade transactions securely over the Internet. Paperless, payment-guaranteed international trade transactions - which eliminate the traditional letters of credit with electronic certifications - are widely considered the most difficult B2B transactions to conduct. The TradeCard system was initially built to accommodate and process this complex, cross-border payment type at a US$100 service fee for each transaction of up to US$100,000 since November 1999.

• Proceedings of the Korea Information Assurance Society Conference
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• 2004.05a
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• pp.71-76
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• 2004

A certificate is important media for the purpose of offering user-authentication service on PKI system. In the paper we analyzed management implement which could make the efficient use of a certificate. This implement called ClientCA will make efficient use of the service about user-authentication consisting of the basis in the age of information through efficient management and partial use of each certificates. Especially, ClientCA could be used efficiently by grafting a small group of PKI system which is operated with particular purposes.

• 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.

• The Journal of Society for e-Business Studies
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• v.7 no.2
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• pp.113-128
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• 2002

This paper proposes a public oriented e-Marketplace that induces strategic coalition using database in which detail information about each firm is contained. A public oriented e-Marketplace links each firm through the type of Internet business model and constructs a trading community. We introduce a design methodology of public oriented e-Marketplace called as social network analysis. Social network analysis helps each firm's network easily visualized and completely modeled. Additionally, this paper tries to analyze the relationship among the level of competition, potential of strategic coalition, and financial performance. We demonstrate the firm to easily accept various strategic coalitions can make higher financial performance under the more competitive condition. This implies that strategic coalition through public oriented e-Marketplace provide the each firm with various opportunities.

• The Journal of Society for e-Business Studies
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• v.3 no.1
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• pp.117-136
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• 1998

Internet-based cyber shopping mall has recently become the focus of interest among many researchers in the field of information systems. It is because of the widespread use of Internee and of the novelty of the cyber mall as a new business practice. This research attempted to provide grounded guidelines for this business style based on a qualitative indepth analysis of the experience of two cyber malls. The two research sites had different company backgrounds, one as a retailer and ther other as an IT service provider. Implications of the analysis were drawn in terms of the business strategy and operating tactics.

• Proceedings of the CALSEC Conference
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• 1999.11a
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• pp.798-812
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• 1999

최근의 급격한 전자상거래 시장의 확대는 21세기 기업의 생존전략으로 부각되고 있으며, 각 기업에서 적극적으로 추진되고 있다. 이러한 전자상거래가 활성화되기 위해서는 사이버 스페이스상에서 현금과 동일한 기능을 수행하는 화폐가 필요하다. 이렇게 전자상거래에서 통용 가능한 화폐를 디지털 화폐(Digital Cash)라고 하며, 전자상거래 구현을 위한 핵심 기술이 된다. 디지털 화폐에 관한 기술 개발 및 사용에 관한 검토는 이미 미국, 일본 등을 중심으로 적극적으로 추진되고 있으며, 상업적으로도 충분히 성공하는 사례가 제시되고 있다. 본 연구에서는 전자상거래 활성화를 위한 디지털 화폐의 활용에 관한 연구로, 현재 부산에서 성공적으로 수행되고 있는 디지털 화폐인 “하나로교통카드(HANARO Traffic Cand)”를 중심으로 디지털 화폐의 성공 가능성에 대하여 검토한다. 여기에서는 하나로교통카드 추진 배경 및 추진 경위, 하나로교통카드의 성공 요인 분석 등을 수행하여, 향후 디지털 화폐가 전자상거래에서 성공할 수 있는 방안에 대하여 검토한다.

• Proceedings of the CALSEC Conference
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• 1999.11a
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• pp.621-626
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• 1999

전자상거래는 ‘제3의 산업혁명’이라는 별칭이 무색하지 않을 만큼 유통구조 뿐만 아니라 산업 전반에 걸쳐 일대 변혁을 가져오고 있다. 전자상거래 중에서도 인터넷 쇼핑은 가장 활성화가 빠르고, 성장 가능성이 무한한 분야이다. 사이버 쇼핑 시대가 다가옴에 따라 소비자가 인터넷 쇼핑몰을 이용할 때, 어떠한 요인들이 소비자의 만족에 직접적으로 영향을 미치고 있는가에 대한 연구가 요구되고 있다. 이를 따라 본 연구에서는 인터넷 쇼핑몰의 이용자를 대상으로 한 설문조사를 통해 인터넷 쇼핑몰의 소비자 만족에 영향을 미치는 요인을 분석 하였다. 설문조사 내용을 다중회귀모형을 통해 분석한 결과, 인터넷 쇼핑몰의 인터넷 상품의 품질, 제공 정보의 종류, 제공 정보의 품질, 주문 시간의 편리성, 주문 취소의 편리성이 인터넷 쇼핑몰의 만족과 유의적인 정의(+) 상관관계를 갖는 것으로 나타났다. 그리고 이와는 반대로 인터넷 상품의 가격 요인, 개인 정보 누출의 위험성은 유의적인 부의(-) 상관관계를 갖는 것으로 나타났다.

• The Journal of Society for e-Business Studies
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• v.5 no.2
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• pp.1-25
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• 2000

The utilization of Internet, which started only at the level of advertisement, has been gradually expanding its application areas as the trial commercial transaction becomes successful, the password-coding technology which removes the risks on the cyber transaction develops, the electronic money appears and other various related technologies progress. Following this trend the securities industry has been experiencing changes along with efforts to use it commercially. This study is to analyze the work of cyber securities companies on the basis of the theoretical background through preceding studies and literature and also analyze the common and different reasons for superiority-securing strategy in competition along with problems and their reasons. And also the objective of this study is to offer new superiority-securing strategy in competition and problem-solving strategy.

• 월간 기계설비
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• s.290
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• pp.48-52
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• 2014

설비건설업계에서 인터넷 상거래 개념조차 생소했던 지난 2001년 '이마켓 플레이스'라는 사이버 장터를 개설하여 설비재재 유통의 신기원을 연 (주)원캔네트웍스(대표 홍평우)가 지난 8월 B2C 소핑몰(www.sulbimall.com)을 오픈하고 사업 다각화에 나섰다. 대한민국 설비자재 유통업체 1위, 600여 설비자재 공급사와 긴밀한 네트워크 형성, 대한설비건설협회 5천여 회원사와 협력 제휴, 국내 최고 우량 설비사들로 구성된 주주(우진INS, 세일ENS, 세보MEC, 우양기건, 동산테크) 등 우수한 경영진과 탄탄한 배경을 가진 원캔네트웍스가 새로운 변신을 시도한 것이다. '설비넷'에서 2007년 원캔네트웍스로 상호를 변경하며 설비건설업계에 신선한 바람을 일으켜 온 원캔은 소량의 자재를 현금이나 카드로 쉽게 거래할 수 있으면 좋겠다는 고객들의 요청에 부응하여 일반 고객들과 중소 규모의 위생설비 시공자, 딜러들을 겨냥한 새 전자상거래 장터 설비몰을 오픈함으로써 B2B에 이어 B2C거래에서도 고객들의 전폭적인 사랑과 인기를 이어갈 것으로 기대된다. 원캔의 경영을 총괄하고 있는 김현회 총괄본 부장을 만났다.