• Proceedings of the Korean Information Science Society Conference
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• 2003.10a
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• pp.790-792
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• 2003

최근 널리 유포되고 있는 악의적인 프로그램으로 E-메일 바이러스가 있는데, 이들은 바이러스가 포함된 E-메일이나 첨부파일을 열기 만 해도 메일 주소록에 등록된 모든 사용자에게 자신을 전파하여 막대한 피해를 유발시킨다. 본 논문에서는 메일주소 변환 및 복원 방식을 이용하여 E-메일 바이러스의 전파를 차단시켜주는 방법을 제안한다. 또한 다형성의 기법을 사용하여 새로운 E-메일 바이러스 공격에도 대응하였다. 이 방법들은 E-메일 바이러스에 의해서는 작동되지 않도록 설계되었으며, E-메일 서버쪽이나 수신자 측에서는 추가로 하는 작업이 전혀 없다.

• Journal of Korea Society of Industrial Information Systems
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• v.7 no.5
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• pp.175-182
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• 2002

The email system is one of the most popular internet applications used to transmit and exchange personal information. However, the pattern of existing email system is fixed, and the system cannot be expanded or re-used. This thesis has proposed the system which can provide the users with better e-mail data which is flexible, re-usable, and expandable XML data on the web-mail. The process of change is as follows: First, make the XML data to have a tree structure using DOM API and then bring the received messages of the users with the CDONTS. Last, transform the received messages into the element and element value. When the e-mail data is transformed t the XML data, 'the data' and 'the presentation' can be distinguished, which enables the users to see messages according to each individual's unique need. With this system, the user can not only convert data to XML, but also can combine the data segments to a form of letter box in order to manage data conveniently and search the data.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.15 no.6
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• pp.37-47
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• 2005

Recently, the malicious e-mail worm-viruses have been widely spreaded over the Internet. If the recipient opens the e-mail attachment or an e-mail itself that contains the worm-virus, the worm-virus can be activated and then cause a tremendous damage to the system by propagating itself to everyone on the mailing list in the user's e-mail package. In this paper, we have designed and implemented two methods blocking e-mail worm-viruses. In the fist method, each e-mail is transmitted only by sender activity such as the click of button on a mail client application. In the second one, we insert the two modules into the sender side, where the one module transforms a recipient's address depending on a predefined rule only in time of pushing button and the other converts the address reversely with the former module whenever an e-mail is sent. The lader method also supports a polymorphism model in order to cope with the new types of e-mail worm-virus attacks. The two methods are designed not to work for the e-mail viruses. There is no additional fraction on the receiver's side of the e-mail system. Experimental results show that the proposed methods can screen the e-mail worm-viruses efficiently with a low overhead.

• Journal of Korea Multimedia Society
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• v.7 no.3
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• pp.438-449
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• 2004

More and more users are using the query e-mail according to the increment of use of internet. The operator of internet site desires the users to check the FAQ and Q＆A contents first before sending the query e-mail to the operator However the users try to get the solution for a problem easily by simply sending a query e-mail. Therefore the increment of query e-mail is inevitable, and the site operator is suffering from too heavy loads and spending too much time and cost to reply the query e-mail. In this paper, we are proposing an efficient method of classifying the query e-mail of users automatically by using a neural network. To verify the reasonability of our work, the query e-mails of KORNET are used as the test data, which is actually gathered in KT. A total of 210 learning data and 280 test data were used to test the performance of the proposed approach. From the experiments we got the encouraging result from the view point of application in real life. The proposed approach satisfied the request of users who wanted rapid response for their query e-mail.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.6 no.8
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• pp.1187-1193
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• 2002

There are POP3(Post Office Progocol 3) and IMAP4(Internet Message Access Protocol 4) for E-Mail service of wire Internet For mobile e-mail service that use wireless Internet, must use exclusive use mobile e-mail server in the case of POP3 e-mail or flow e-mail conversion and because e-mail is kept in sever side with remote file server in case of IMAP4 mail that is used by Web-Mail, utilization of mobile e-mail service is difficult by mobile client who there is no IMAP4 rules. This thesis embodying e-mail extraction engine for mobile that do to design markup language converter of XML base, and use Web-Mail of recently been generalizing IMAP4 base in mobile, presented mobile e-mail service method to do so that can use Web-Mail that is based on IMAP4 as well as POP3 mail service in mobile environment.

• Proceedings of the Korea Multimedia Society Conference
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• 2003.05b
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• pp.746-749
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• 2003

인터넷 사용자의 증가와 함께 e-mail 사용자 또한 증가하게 되면서 대량의 메일을 송수신하는 경우, 메일에 대한 효율적 관리의 중요성이 부각되고 있다. 본 논문에서는 수신된 메일의 내용을 텍스트 형태로 가져온 뒤, parallel regular expression을 이용하여 Keyword를 검색하고 추출하여 메일에 첨부되어온 멀티미디어 파일들을 자동으로 분류·저장하는 멀티미디어 첨부파일 자동분류 시스템을 제안하였다. 수신된 메일을 일일이 확인하고 분류해야만 했던 기존의 시스템과는 달리 본 논문에서 제안하고자 하는 시스템을 이용했을 경우 노력과 시간을 절감하고 첨부파일들을 효과적으로 관리할 수 있다는 장점이 있다.

• Journal of KIISE:Software and Applications
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• v.29 no.10
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• pp.726-735
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• 2002

E-mail service has been a general method for communication as internet is widely used instead of post mails. Many companies have invested in e-mail advertisement as e-mail service is spread. E-mail advertisement has an advantage that it can consider personal characters. A lot of e-mail users have been given e-mails that they did not want to receive because their e-mail addresses were opened out to companies on internet. Therefore, they need junk mail checking systems and several e-mail service providers have supported junk mail filters. However, the junk mail filters can check the junk mail with constraint because they don't check the junk degree of mails by the contents of e-mail. This paper suggests a content-based junk mail checking model using fuzzy relational products. The process of the junk mail checking model using fuzzy relational products is as following: (1) analyzes semantic relation between junk words-base and e-mails, (2) checks the junk degree of the e-mail using the semantic relation, (3) checks the mails with SVJ(Standard Value of Junk) if those are junk mail or non-junk mail. The efficiency of the proposed technique is proved by comparing the junk degree of the e-mail and the number of junk mails that was checked by e-mail users and checked by the proposed junk mail checking model.

• 한국IT서비스학회:학술대회논문집
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• 2003.05a
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• pp.629-635
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• 2003

최근 많은 기업에서 e-mail을 기업의 홍보 및 마케팅 수단으로 활용하고 있다. 하지만 스팸메일로 인해 광고메일의 많은 장점들이 퇴색되고, 커다란 사회문제로까지 여겨지고 있다. 본 연구는 고객의 광고메일에 대한 반응율을 높이기 위해 고객이 선호하는 광고메일의 특성을 파악하고, 기업의 e-mail을 통한 마케팅 수행 시, 효과적인 광고메일의 구성 방안을 제시한다. 연구 결과, 광고메일 구성 시 고객의 반응율을 높이기 위해서는 메일의 제목, 보낸 사람, 컨텐츠, 발송 주기 등을 고려해야 하는 것으로 나타났으며, 선호하는 메일제목의 형태는 대체로 강의나 기사형태인 것으로 나타났다. 또한, 회사명이나 브랜드와 같은 공신력 있는 발신자명을 사용하는 것이 실명이나 e-mail주소를 사용하는 것보다 효과적이며, 컨텐츠의 형태는 비주얼한 형태로 구성하는 것이 일반 텍스트나 HTML형태 보다 효과적인 것으로 나타났다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2002.11a
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• pp.413-417
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• 2002

E-mail was very particular way of communication in the past, but it becomes one of daily communication methods now. Due to E-mail has a property which is not complete for security, sometimes it is used for purpose of commercial or badthings, therefore it becomes the latest problem to keep off a Spam-mail and commercial advertising E-mail, many ways to keep off were perposed for it. In this paper, I explained how to sort and keep off these Spam-mail and commercial advertising E-mail with three way, prevention by server level, prevention by construction of network level, prevention by client level. we designed a prevention system for Spam-mail and implemented it by Visual Basic.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.05a
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• pp.465-468
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• 2003

E-mail, one of the oldest services in internet becomes very important and essential way to communicate with development of internet. Due to E-mail has a property which is not complete for security, sometimes it is used for purpose of commercial or bad things, therefore it becomes the latest problem to keep off a Spam-mail and commercial advertising E-mail, many ways to keep off were perposed for it. In this paper, I explained how to sort and keep off these Spam-mail and commercial advertising E-mail with three way, prevention by server level, prevention by construction of network level, prevention by client level. we designed a prevention system for Spam-mail and implemented it by Visual Basic.