• Convergence Security Journal
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• v.23 no.3
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• pp.13-20
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• 2023

This study conducted a digital forensic analysis of Signal and Telegram, two secure messengers widely used in the Android environment. As mobile messengers currently play an important role in daily life, data management and security within these apps have become very important issues. Signal and Telegram, among others, are secure messengers that are highly reliable among users, and they safely protect users' personal information based on encryption technology. However, much research is still needed on how to analyze these encrypted data. In order to solve these problems, in this study, an in-depth analysis was conducted on the message encryption of Signal and Telegram and the database structure and encryption method in Android devices. In the case of Signal, we were able to successfully decrypt encrypted messages that are difficult to access from the outside due to complex algorithms and confirm the contents. In addition, the database structure of the two messenger apps was analyzed in detail and the information was organized into a folder structure and file format that could be used at any time. It is expected that more accurate and detailed digital forensic analysis will be possible in the future by applying more advanced technology and methodology based on the analyzed information. It is expected that this research will help increase understanding of secure messengers such as Signal and Telegram, which will open up possibilities for use in various aspects such as personal information protection and crime prevention.

• Journal of Digital Convergence
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• v.14 no.3
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• pp.95-103
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• 2016

Nowadays, team members often use mobile messenger service (MMS) in performing team projects. Team members can freely express their ideas or opinions using MMS without any restrictions in terms of place and time. But, in team project, using MMS is pressing them to perform their project more quickly than off-line conference, and assigning a role outside the range of their ability. In other words, team members can recognize work overload by utilizing MMS and this work overload can lead to team conflict. This study examines the effect of work overload through MMS use on team performance. We consider team engagement and team trust as the key drivers of team performance. However, team conflict will obstruct team engagement and team trust. Research model was analyzed by 135 university students who were doing several team projects. The analysis results show that work load through MMS use has a significant effect on team conflict. In other words, when work load is increased by utilizing MMS, it leads to team conflict. This team conflict loses trust between team member and hinders team performance. Lastly, this research provides several implications for right usage of MMS to improve team project performance.

• The Journal of the Korea Contents Association
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• v.20 no.4
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• pp.151-158
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• 2020

SNS on the mobile platform is an essential element and tool for communication and has become a part of life for many people. Having been accustomed to non-face-to-face communication, people today have chosen to use emoticons instead of text to express their feelings and the use of emoticons is constantly growing. This is because the emoticons in various styles of drawings and movements can evoke emotional and sentimental reactions in users and express their tastes in addition to feelings. The current study was conducted to analyze the use of initial emoticon characters released by two most leading SNS platforms in Korea--Kakao for Kakao Talk and Naver for Line--and their expansion to various platform businesses. Based on the cases of the two companies, it discussed the development and goals of Korea-made emoticons in the future as cultural contents.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.13 no.4
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• pp.157-163
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• 2013

The development of the latest media technology has changed the traditional broadcasting system. The traditional broadcasting system, which was operated by the mass media and the terrestrial broadcasters, is now transformed to the viewer-centered and bidirectional media through the convergence of internet and mobile. In terms of broadcasting environment, the function of the traditional TVs has been changed to the Smart TVs combined with an open platform which not only deliver visual contents, but also supply various applications and additional information linking the content providers and viewers. This ongoing broadcasting environmental change has made it possible for viewers to participate in the programs such as reality shows or sports events through SNS, texting or phone calls. Therefore, the purpose of this experiment is to present the ways to promote easier and more convenient viewer-participation in the programs by applying mobile messenger to existing broadcasting system in order to enhance the involvement of broadcasters and viewers of the programs and to diversify the roles of content providers and viewers in broadcasting.

• Digital Contents
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• no.1 s.140
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• pp.62-65
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• 2005

디지털 컨버전스 개념이 속속 도입되고 있다. 휴대폰은 어느덧 디지털 카메라 기능과 MP3기능은 물론 DMB수신 기능을 갖춘 방송 수신기기의 역할 까지 맡고 있다. 또 최근에는 혈당 및 체지방 등 건강 관련 수치를 측정하고, TV리모콘 기능에 하드디스크 기능 까지 갖추고 있다. 콘텐츠 분야에 있어서도 마찬가지다. 이제 콘텐츠 분야에서는 유선 콘텐츠와 무선 콘텐츠의 경계가 없어지는 양상을 보인다. 유선에서 사용하는 인스턴트 메신저를 무선에서 바로 이용하고, 유선 인터넷 사용자와 함께 게임을 즐긴다. 이러면서 유무선의 경계는 점점 옅어져 간다. 이제 소비자들은 콘텐츠의 종류를 가리지 않고 그저 같은 콘텐츠로 느끼기 시작했다고도 할 수 있다.

• Proceedings of the Korean Information Science Society Conference
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• 2002.04b
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• pp.574-576
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• 2002

본 논문에서는 실시간 대화 행위에서 XML기반 메시지를 이용하여 대화 행위의 체계적 표현을 위한 XML기반 대화 메시지를 설계한다. 설계되는 XML기반 메시지는 대화 문맥의 구분과 문맥 흐름의 표현과 메시지의 다양한 스타일을 지원한다. 또한, 메시지가 XML을 기반으로 작성됨으로써 태그의 확장에 따라 다양한 대화를 효율적으로 표현하는 환경을 지원할 수 있다. 제안하는 XML기반 대화 메시지는 실시간 대화 행위를 위한 대화 메시지의 프로토타입이다. 응용 분양로는 헙업 작업에서 정보의 전달 및 공유, 온라인 게임에서 메시지의 시각적 효과의 지원, 모바일 메신저에서 미디어의 전송 및 표현 방법의 지원, 커뮤니티에서 사회적 행위의 지원 등이다

• Proceedings of the Korean Society of Computer Information Conference
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• 2016.01a
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• pp.167-168
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• 2016

2015년 대한민국을 관통하는 키워드 중 하나가 O2O (Online to Offline)이다. 대기업과 중소기업까지 O2O를 전면에 내세우고 새로운 비즈니스를 모색하는 기업들이 확대되고 있다. O2O 비즈니스 기업들의 업종도 모바일 메신저, 포털을 비롯한 인터넷 사업자, 통신사업자, 모바일 기기 제조사, 전자상거래 기업과 같은 정보통신기술(ICT) 관련 기업부터 유통기업까지 다양하다. 본 연구를 위하여 2014.5~2015.5 1년 간 여자대학생 92명의 '모바일 쇼핑 금융서비스 이용 현황' 조사를 실시하였다. 조사 결과, 상품정보검색(96.7%), 구매(88%), 주문 배송(77.2%), 할인 프로모션정보(62%) 등 모바일 쇼핑을 하였고, 모바일금융 서비스로는 하루에 1번정도 (20.4%), 월1~3회(20.4%), 1주 3~4회(16.3%), 이용 안하는 경우(24.5%)로 조사 되었다. 모바일 금융서비스를 이용하지 못하는 이유로는 개인정보보안 및 해킹우려(39%), 이용/결제 과정의 불편함(25.8%) 등 이었으며, 국내 O2O 플랫폼이 제공하는 서비스는 쇼핑부터 결제까지 완결적인 구조로 보완할 부분이 필수적이다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.26 no.6
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• pp.1583-1592
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• 2016

This report explains unspecified private information that have the company of resource value is provided the public with out protection. Let's have a good look at the protection of unspecified private information problems through personal information of law and policy mobile messenger company's TOS(Terms of service) We urgently need for an competition framework to prevent the leaking of Non-specified private informations and need for technical development that is information combined management system. We try verify systems as mentioned above with variety scenarios and suggest improvement plan that is leaking Non-specified private information.

• Journal of Convergence for Information Technology
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• v.9 no.11
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• pp.22-27
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• 2019

Along with the universalization of smartphones, smartphone addiction is becoming a physical and mental social problem. The purpose of this study was to investigate the relevance of the problems caused by addiction in 300 adolescents, adults and the elderly. The results showed that the use of SNS and messenger were most related to the negative factors such as health problems, depression, antisocial, schizophrenia, lower self-esteem, and lower social expectation. In addition, games and videos were analyzed to have relatively low negative problems. Focusing on the high addiction rate, the researcher further analyzed the preference for problem solution and discussed the improvement measures for smartphone addiction reduction.

• Journal of Digital Convergence
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• v.14 no.1
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• pp.131-139
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• 2016

Given social problems of service addiction such as mobile messenger services(MMSs), many studies on service management and information systems have examined the negative outcomes of service addiction. MMS addiction significantly influences user's health and academic performance. In this regard, this study investigated the effects of MMS addiction on user's health and academic performance problems. We posit personal traits and service features as key antecedents of MMS addiction. The research framework was tested by using survey data collected from 162 university students who have frequently used Kakaotalk. The analysis results found that MMS addiction significantly influences users' health and academic performance problems. The findings of this study indicate that self-esteem and self-control play an important role in generating MMS addiction. While attention significantly affects MMS addiction, social relationship formation and perceived enjoyment are not significantly associated with MMS addiction. The analysis results help MMS providers and government establish policies or guidelines to induce healthy MMS use.