• Journal of the Korea Society of Computer and Information
• /
• v.27 no.12
• /
• pp.161-169
• /
• 2022

With the development of mobile devices and global positioning systems, various location-based services can be utilized, which collects user's location information and provides services based on it. In this process, there is a risk of personal sensitive information being exposed to the outside, and thus Geo-indistinguishability (Geo-Ind), which protect location privacy of LBS users by perturbing their true location, is widely used. However, owing to the data perturbation mechanism of Geo-Ind, it is hard to accurately obtain the density distribution of LBS users from the collection of perturbed location data. Thus, in this paper, we aim to develop a novel method which enables to effectively compute the user density distribution from perturbed location dataset collected under Geo-Ind. In particular, the proposed method leverages Expectation-Maximization(EM) algorithm to precisely estimate the density disribution of LBS users from perturbed location dataset. Experimental results on real world datasets show that our proposed method achieves significantly better performance than a baseline approach.

• Journal of Digital Convergence
• /
• v.10 no.8
• /
• pp.1-14
• /
• 2012

The purpose of this study is to explore the causality among technostress creators. In doing so, we can suggest the ways how to reduce a technostress of employees. Research results suggest that pace of change has a positive effect on the work overload and has a negative effect on work-home conflict. Complexity of technology positively influences not only work overload but job insecurity. Work overload has a significant effect on work-home conflict. Finally, work-home conflict has a positive effect on job insecurity. Conclusions and implications are discussed.

• Journal of the Korean Home Economics Association
• /
• v.46 no.2
• /
• pp.59-71
• /
• 2008

The purpose of this study was to discuss the role of mothers in children's privacy protection on the Internet. Specifically, the study explored 1)children's privacy protection efforts on the Internet, 2)types of personal information children provided at Web sites, and 3)the effect of mothers' privacy protection efforts on their children's privacy protection levels. The Internet survey was conducted and total of 153 mothers and their children aged 12-13 were included for statistical analysis. The descriptive statistics and Ordinary Least Squares were used. The results yield that children showed relatively high levels in providing personal information on the Internet, while they have no sufficient competency at privacy protection. The effect of mothers' privacy protection efforts on children's privacy protection was partially supported. The longer hours of Internet use and frequent participation in online events increased the potential consequences of children's privacy invasion. Providing privacy standards for online service providers and marketers targeting children could help protect children's privacy. Moreover, education program targeting parents and children could contribute them reduce potential consequences of children's privacy invasion.

• Journal of Korean Society for Quality Management
• /
• v.45 no.3
• /
• pp.583-594
• /
• 2017

Purpose: The purpose of this study is how personal information protection risks affect the intention to use domestic smart banking services. VAM(Value based Adoption Model) model is validated as a theoretical background, selecting ease of use, usefulness and perceived security as a benefit factor, and considers perceived cost, technical complexity, and risk of personal information leakage as a sacrifice factor. Methods: The method of this study used questionnaire survey to collect 365 data on suer's perception on smart banking services, and also performed a structural equation modeling method using by AMOS 23. Results: The result of this paper shows that all hypothesis are accepted statistically significant except 1 hypothesis. Conclusion: This research is concluded that perceived value is affected on statistically positive impact on ease of use, usefulness and perceived security, and negative impact on perceived cost and risk of personal information violation, not statistically technical complexity.

• The Journal of Korean Association of Computer Education
• /
• v.16 no.3
• /
• pp.71-78
• /
• 2013

Internet ethics has been simply recognized as moral understanding, knowledge of etiquette or a kind of common sense. Recently, however, rapid growth of internet dysfunction such as the inadvertent disclosure of personal information, infringement of copyright and malicious code with hacking, has unavoidably broadened the territory of internet ethics. In this light, education contents of internet ethics must include not only laws and systems but specialized knowledge on prevention and action of internet dysfunction. In this paper, we analyze the variables affecting the educational achievement on diverse domains of internet ethics by investigating internet ethics qualifying examination and afterward we suggest some application methods to strengthen the internet ethics.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.8 no.1
• /
• pp.41-49
• /
• 2007

RFID in which subminiature IC chip with the indentified information is built a core technique that can recognize, trace and manage various information of an object using radio frequency in the age of Ubiquitous. Several pressing matters about an infringement of Privacy and a security of private information should be settled as soon as possible because an information of specific circumstance can be collected and used without any awareness by others as well as a private information. In addition, various algorithms with high level of security, which is normally used in wire, can be hardly applied to RFID tag because of a lot of restrictions of tag. In this report, designed-RFID tag based on the standard of ISO/IEC 18000-6 and the problems which originated from the technical procedure of that design were analyzed, and the algorithm which could be applied to the designed-tag was also investigated.

• The Journal of Society for e-Business Studies
• /
• v.27 no.2
• /
• pp.137-152
• /
• 2022

Consumers' enhanced intention to adopt the Mydata service or their voluntary provision of personal information is a very essential element in the stable growth of the Mydata industry along with the creation of corporate values. The growing leakage of customer information according to the rising value of data can have negative impacts on the use of Mydata service and shrink quality custom service needs based on the personal information provided by financial consumers. This study set out to identify security risks that financial consumers could recognize and security factors that could supplement them and investigate the effects of these security factors on consumers' intention to adopt the Mydata service, thus providing useful implications for increasing the acceptance of financial consumers and finding a strategy to expand safe utilization. The findings raise a need to guarantee the stability and transparency of information provided by customers as information subjects, and they should be essential requirements for the Mydata service. The security factors applied to guarantee them should include convenience in terms of financial service.

• Journal of Korea Society of Industrial Information Systems
• /
• v.28 no.5
• /
• pp.41-54
• /
• 2023

Smart grid that supports efficient energy production and management is used in various fields and industries. However, because of the environment in which services are provided through open networks, it is essential to resolve trust issues regarding security vulnerabilities and privacy preservation. In particular, the identification information of smart meter is managed by a centralized server, which makes it vulnerable to security attacks such as device stolen, data forgery, alteration, and deletion. To solve these problems, this paper proposes a blockchain based authentication protocol for a smart meter. The proposed scheme issues an unique decentralized identifiers (DIDs) for individual smart meter through blockchain and utilizes a random values based on physical unclonable function (PUF) to strengthen the integrity and reliability of data. In addition, we analyze the security of the proposed scheme using informal security analysis and AVISPA simulation, and show the efficiency of the proposed scheme by comparing with related work.

• The Journal of the Korea Contents Association
• /
• v.6 no.9
• /
• pp.85-97
• /
• 2006

Schemes to case analysis and cope with on-line game crimes net supervision system, a real name confirmation process, and a self-examination system to check by themselves if they are addicted to on-line games with a view to prevent the addiction. In addition, this study found that general precuations should comprise measures to change the awareness of the users of the internet and to establish their ethical senses because most on-line garners are not aware that their actions are a crime and believe their crimes are not disclosed to the outsiders.

• The Journal of Society for e-Business Studies
• /
• v.10 no.1
• /
• pp.121-134
• /
• 2005

The MANET has many problems in security despite of its many advantages such as supporting the mobility of nodes, independence of the fixed infrastructure, and quick network establishment. In particular, in establishing security, the traditional certification service has many difficult problems in applying to the MANET because of its safety, expandability, and availability. In this paper, a secure and effective distributed certification service method was proposed using the Secret Sharing scheme and the Threshold Digital Signature scheme in providing certification services in the MANET. In the proposed distributed certification service, certain nodes of relatively high safety among the mobile nodes consisting of the MANET, were set as privileged nodes, from which the process of issuing a certification started. The proposed scheme solved problem that the whole network security would be damaged by the intrusion to one node in the Centralized Architecture and the Hierarchical Architecture. And it decreased the risk of the exposure of the personal keys also in the Fully Distributed Architecture as the number of the nodes containing the partial confidential information of personal keys decreased. By the network simulation, the features and availability of the proposed scheme was evaluated and the relation between the system parameters was analyzed.