• Journal of the Korea Institute of Information Security & Cryptology
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• v.25 no.6
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• pp.1435-1447
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• 2015

Finance Companies are operating a security solution such as E-DRM(Enterprise-Digital Right Management), Personal information search, DLP(Data Loss Prevention), Security of printed paper, Internet network separation system, Privacy monitoring system for privacy leakage prevention by insiders. However, privacy leakages are occurring continuously and it is difficult to the association analysis about relating to the company's internal and external distribution of private document. Because log system operated in the separate and independent security solutions. This paper propose a systematic chains that can correlatively analyze business systems and log among heterogeneous security solutions organically and consistently based on security documents. Also, we suggest methods of efficient detection for Life-Cycle management plan about security documents that are created in the personal computer or by individual through the business system and distribution channel tracking about security documents contained privacy.

• Convergence Security Journal
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• v.17 no.2
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• pp.3-13
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• 2017

In the knowledge-information society, many domestic companies put lots of investment in technical development to possess core technologies and intellectual property. However, in the results of passive investment in security to protect their technologies compared to the active investment in technical development, the technology leaks from many companies and research institutes are rapidly increasing. Such increase of technology leaks not only causes damage to companies, but also has harmful effects on national economy directly and indirectly. Even though it has been perceived that a lot of industrial technology leak crimes are committed by former/current workers of small and medium-sized businesses, it is hard to find researches that mainly compare and analyze them. Therefore, this study aimed to understand the actual status of industrial technology leaks by analyzing cases of industrial technology leaks from 2014 to 2016 based on the type of victimized companies, corporate internal leakers' positions, matter of complicity, tools used for technology leaks, and motivation for technology leaks. Through the analysis in each type, the patterns and characteristics of industrial technology leaks were researched, and also the exploratory research on industrial security for the prevention of industrial technology leaks was conducted.

• Annual Conference of KIPS
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• 2014.11a
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• pp.492-494
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• 2014

정보유출사고가 증가됨에 따라, 기업 및 기관 내 주요정보(개인정보 및 핵심기술)가 유출되어 큰 피해가 발생하고 있다. 이러한 정보유출 사고 중 대부분이 내부자에 의한 고의 또는 실수로 발생하는 경우가 대부분이다. 이를 방지하기 위해 다양한 보안 솔루션을 도입하여 운영하고 있지만 내부자에 의한 정보유출사고는 본인이 소유하고 있는 권한을 이용하여 불법적인 정보유출을 시도하는 것으로, 이러한 위험행동을 탐지하는 것은 쉽지 않다. 이를 해결하기 위해 기업 및 기관에서는 기 구축된 다양한 보안 솔루션을 통합하여 모니터링 할 수 있는 '내부정보유출방지 모니터링시스템'을 구축하고 있으며, 내부정보유출방지 모니터링을 위한 연구도 지속적으로 진행되고 있다. 따라서 본 논문에서는 중점관리 대상(고위험군) 선정을 통해 효율적인 내부정보유출방지 모니터링을 수행할 수 있도록 연구하고자 한다.

• KIISE Transactions on Computing Practices
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• v.23 no.7
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• pp.397-407
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• 2017

Wireless networks make the users' work more convenient and efficient, but such networks can impair the availability of network resources and can cause leakage of important corporate information when there are security threats. In particular, damage has increased because of security attacks that take advantage of the vulnerabilities created by a wireless AP (Access Point). Public organizations and companies have gradually selected the WIPS (Wireless Intrusion Prevention System) to block wireless security threats and protect the internal network. However, it is very costly for other organizations and companies to introduce the WIPS solution. This paper proposes implementing a WIPS Sensor by using Raspberry Pi to reduce these costs and to block the various wireless LAN security threats. This implementation would protect corporate information and provide consistent services at a relatively reasonable price.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.9
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• pp.175-181
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• 2019

In the case of a conventional single stage decompression regulator used for large depressurization in the hydrogen fuel cell system of a fuel cell electric vehicle (FCEV), problems can arise, such as pulsation, slow response, hydrogen brittleness, leakage, high weight, and high cost due to high decompression. Most of these problems can be overcome easily using two decompression mechanisms (two-stage structures). In addition, a wide outlet-pressure control range can be secured if an electronic solenoid is applied to the second decompression. Accordingly, it is necessary to improve the precision of the outlet pressure of a two-stage pressure-reducing regulator and develop techniques, such as leakage prevention, durability, light weight, and price reduction. Therefore, to improve the outlet pressure accuracy and prevent leakage, the structural part before and after decompression to improve the air tightness were divided and the analysis was carried out assuming that the valve part was closed (open ratio: 0%) after each initial internal pressure application.

• Fire Science and Engineering
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• v.31 no.3
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• pp.63-72
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• 2017

This study fabricated a low-voltage 10 circuit distribution board based on the KEMC (Korea Electrical Manufacturers Cooperative) 2102-610 standard and performed a characteristics assessment of the developed 10 circuit distribution board to secure product stability. The developed 10 circuit distribution board is designed to have the characteristics of insulation materials, as well as resistance to corrosion ultraviolet radiation and mechanical impact. The developed distribution board is fabricated to have an appropriate protection class of enclosure, electric shock prevention and protection circuits, switchgear and its components, internal electrical circuits and connectors, external conduct terminal, insulation characteristics, temperature rise test, heat resistance, etc. The developed 10 circuit distribution board consists of a single phase circuit and 3-phase circuits. It is possible to measure in real time the leakage current generated from the load distribution line by installing a sensor module at the load side of each of the branched switchgears. In addition, it is possible to increase a circuit according to the use and purpose of the load and to also manage and check the load in real time. Temperature rise tests were performed on the developed 10 circuit distribution board at 18 places including the inlet connection, main circuit and distribution circuit bus bars and bus bar supports, etc. The highest temperature of $65.3^{\circ}C$ was measured at the R-Phase of the connection of the MCCB power supply for the branch circuit bus bar and a temperature rise of $61.6^{\circ}C$ was measured at the T-Phase of the load side. When applying thermal stress to an MCCB for 6 hours at $180^{\circ}C$ using a heat resistant experimental device, it was found that the actuator lever was transformed and moved in the tripped state.