• International Journal of Fuzzy Logic and Intelligent Systems
• /
• v.6 no.2
• /
• pp.105-109
• /
• 2006

In this paper, we constructed a two-phase spam-mail filtering system based on the lexical and conceptual information. There are two kinds of information that can distinguish the spam mail from the ham (non-spam) mail. The definite information is the mail sender's information, URL, a certain spam keyword list, and the less definite information is the word list and concept codes extracted from the mail body. We first classified the spam mail by using the definite information, and then used the less definite information. We used the lexical information and concept codes contained in the email body for SVM learning in the 2nd phase. According to our results the ham misclassification rate was reduced if more lexical information was used as features, and the spam misclassification rate was reduced when the concept codes were included in features as well.

• Journal of the Korean Operations Research and Management Science Society
• /
• v.23 no.3
• /
• pp.169-184
• /
• 1998

Despite the adoption of advanced computer technologies by organizational makers, the actual use of E-mail by managers and professionals has tended to be lagging and the potential benefits of these technologies have not been fully realized. Much of the prior research in this area has focused on the utility or perceived usefulness of E-mail as the principal motivating factor in using them. Relatively little attention has been given to the recreational basis of E-mail usage. The limited research in this area indicates the use of E-mail can be stimulated by the intrinsic joy and enjoyment derived. The objective of this study is to integrate these perspectives on the reasons underlying the use of E-mail and to examine simultaneously the relative influence of motivators identified in the literature as affecting individuals' decision to use E-mail. The study focuses specifically on E-mail because of its ubiquitous usage.

• Proceedings of the KAIS Fall Conference
• /
• 2003.11a
• /
• pp.28-34
• /
• 2003

Deleting unsolicited email, popularly known as spam mail, is an annoying task for Internet users. Moreover, spam mail causes a variety of social problems. At present, legal restrictions cannot eradicate spam senders. As a result many technical methods to eliminate spam mail such as spam filtering and online stamps have been introduced. However, the process of blocking spam mail can inadvertently result in suspension of indispensable or beneficial communication. In this paper, we propose a certificate and agent based emailing architecture that can block spam mail, while at the same time approve certified mail. This architecture can be accelerated by synergistic utilization of digital signature and electronic document interchange.

• Journal of the Korea Institute of Information Security & Cryptology
• /
• v.14 no.6
• /
• pp.135-148
• /
• 2004

Recently, it is difficult to block the spam mail that changes variously with past spam distinction method by words. To solve such problem, This paper propose the method of generating spam distinction rule using URL frequency analysis. It is consist of collecting spam, drawing URL that get into characteristic from collected spam mail. URL noonalizing, generating spam distinction rule by time frequency, and blocking mail. It can effectively block various types of spam mail and various forms of spam mail that change.

• Journal of Fashion Business
• /
• v.7 no.1
• /
• pp.38-54
• /
• 2003

This study looked into the present status of e-mail marketing, which is conducted in local Internet fashion shopping malls and is being used as a one-to-one marketing method in the e-CRM concept so as to establish an effective e-mail marketing policy by grasping problems based on the current status and by presenting solutions to the problems. This study analyzed the e-mail letters received during a certain period of time by 30 professional Internet fashion shopping malls of with famous goods, brands and non-brands. Four individuals subscribed to shopping mall through the procedure for membership applying for e-mail services. The analysis showed that there were no shopping malls that were doing a differentiated e-mail marketing among Internet shopping malls. As for time factor, they were sending e-mail letters irregularly regardless of a certain cycle. And as for visual factor, they didnt have any standard for the content of the mail. As for content factor, the contents of their mail were not differentiated and all the same. The comparison of fashion malls showed that the brand shopping malls were the most active in e-mail marketing. On the basis of the problems, the direction for the effective e-mail marketing of Internet shopping malls are presented as follows: First, individualized contents fitting for customers should be developed, and differentiated mailing services should be provided thereby. Second, each shopping mall should make periodic tests of mailing to find out the optimal time and day to provide e-mail services to the customers at the designated time. Third, e-mail should be differentiated fitting for the website according to a certain on a certain standard for visual effects and the identity of shopping mall should be established. Firth, in the contents of e-mail, the image and message elements should be properly harmonized and creative policies should be made with interactive or recreational elements. Fifth, a homepage policy which can satisfy customers demand for information when the e-mail is clicked on..

• Journal of the Korea Society of Computer and Information
• /
• v.16 no.2
• /
• pp.33-46
• /
• 2011

Since an e-mail has been an important mean of communication and information sharing, there have been much effort to classify e-mails efficiently by their contents. An e-mail has various forms in length and style, and words used in an e-mail are usually irregular. In addition, the criteria of an e-mail classification are subjective. As a result, it is quite difficult for the conventional text classification technique to be adapted to an e-mail classification efficiently. An e-mail classification technique in a commercial e-mail program uses a simple text filtering technique in an e-mail client. In the previous studies on automatic classification of an e-mail, the Naive Bayesian technique based on the probability has been used to improve the classification accuracy, and most of them are on an e-mail in English. This paper proposes the personalized recommendation technique of an email in Korean using a data mining technique of frequent patterns. The proposed technique consists of two phases such as the pre-processing of e-mails in an e-mail folder and the generating a profile for the e-mail folder. The generated profile is used for an e-mail to be classified into the most appropriate e-mail folder by the subjective criteria. The e-mail classification system is also implemented, which adapts the proposed technique.

• The Transactions of the Korea Information Processing Society
• /
• v.7 no.9
• /
• pp.2903-2912
• /
• 2000

The paper is a design and implementation of the Hybrid Messaging System as integrating electronic mail system and common mail system based on PKI(Public Key Infrastructure), A user writes mail through Web Browser and sends the mail to Web Server. CGHCommon Gateway Interface) program sends the mail that was received through the Web Sever to Post Office Electronic Mail Server using SMTP(SimpleMail Transfer Protocol), The End Process program of the Hybrid Messaging System in a Post Office fetches the mail from the Post Office Electronic Mail Server using POP3 (Post Office Protocol 3), prints it and deliver it to recipients, Also, the Hybrid Messaging System is able to sign the mail with a sign private key that the Certificate Authority publics for users and encrypts the mail with a public key of the Post Office Web Server.

• Korea Journal of Hospital Management
• /
• v.8 no.1
• /
• pp.24-41
• /
• 2003

This study was conducted to investigate the determinants of e-mail use and its effects on the organizational effectiveness of hospital administrative workers. Data were collected from 147 administrative workers at 2 university hospitals in Seoul using self-administered questionnaires and analyzed using t-test, ANOVA, and multiple regression analysis. The major findings of the study are as follows: 1. There are significant differences in the use of e-mail for business purpose in terms of the gender, age, status, and education level. Workers who are men, over 30s, high status, and highly educated were more likely to use the e-mail. As for the private use, there are significant differences only in terms of the age level. 2. The more job characteristics need to use e-mail, the more workers have computer skills, and the more favorable the organizational culture is to using the e-mail, the more frequently the workers use the e-mail for both business and private purposes. 3. Job characteristics and personal computer skills have significant positive effects on the use of e-mail for business purpose. However, for the private purpose, only personal computer skills have a significant effect on the use of e-mail. 4. The level of the e-mail use for the business purpose has a significant effect on the work productivity, communication, and job satisfaction, while the level of the e-mail use for the private purpose has a significant effect only on the communication and job satisfaction. The implications for hospital administrators and suggestions for further research are discussed.

• Journal of Korea Multimedia Society
• /
• v.9 no.2
• /
• pp.255-263
• /
• 2006

It is common that a junk mail has an inconsistency of mail addresses between those of the mail headers and the mail recipients. In addition, users easily know that an email is a junk or legitimate mail only by looking for the title of the email. In this paper, we tried to apply the filtering classifiers of mail address validation check and the combination method of title-content weighting to improve the performance of junk mail filtering system. In order to verify the effectiveness of the proposed method, we performed an experiment by applying them to Naive Bayesian classifier. The experiment includes the unit testing and the combination of the filtering techniques. As a result, we found that our method improved 11.6% of recall and 2.1% of precision that it contributed the enhancement of the junk mail filtering system.

• Journal of Digital Convergence
• /
• v.14 no.12
• /
• pp.201-208
• /
• 2016

The purpose of Email system is used to transmit important information between companies in today. But Email system has vulnerabilities such that changing email address of sender by attacker. So it is important to authenticate mail server and user using mail server. This paper proposed mail proxy located between mail servers that evaluate authority and authenticate sender and receiver. The proposed email platform has some functions to compose trusted domain and to authenticate mail servers in the domain. Also, if sender and recipient are valid users in mail system, each exchanges a key for confidentiality and the sender sends an e-mail encrypted with exchanged key to recipient. In this paper, we propose a key exchange scheme in proposed platform and verify this protocol using Casper which is the formal analysis tool. In the future research, we will study the overall platform of the domain configuration for the security of mail.