Search : [ author: 김수형 ] (2)

Models for Privacy-preserving Data Publishing : A Survey

Jongseon Kim, Kijung Jung, Hyukki Lee, Soohyung Kim, Jong Wook Kim, Yon Dohn Chung

http://doi.org/

In recent years, data are actively exploited in various fields. Hence, there is a strong demand for sharing and publishing data. However, sensitive information regarding people can breach the privacy of an individual. To publish data while protecting an individual’s privacy with minimal information distortion, the privacy- preserving data publishing(PPDP) has been explored. PPDP assumes various attacker models and has been developed according to privacy models which are principles to protect against privacy breaching attacks. In this paper, we first present the concept of privacy breaching attacks. Subsequently, we classify the privacy models according to the privacy breaching attacks. We further clarify the differences and requirements of each privacy model.

Risk Analysis on Various Contextual Situations and Progressive Authentication Method based on Contextual-Situation-based Risk Degree on Android Devices

Jihwan Kim, SeungHyun Kim, Soo-Hyung Kim, Younho Lee

http://doi.org/

To prevent the use of one’s smartphone by another user, the authentication checks the owner in several ways. However, whenever the owner does use his/her smartphone, this authentication requires an unnecessary action, and sometimes he/she finally decides not to use an authentication method. This can cause a fatal problem in the smartphone’s security. We propose a sustainable android platform-based authentication mode to solve this security issue and to facilitate secure authentication. In the proposed model, a smartphone identifies the current situation and then performs the authentication. In order to define the risk of the situation, we conducted a survey and analyzed the survey results by age, location, behavior, etc. Finally, a demonstration program was implemented to show the relationship between risk and security authentication methods.


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