• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2010.10a
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• pp.148-151
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• 2010

화재증거물 속의 인화성물질을 분석하는 기술은 현재 다양한 추출 및 농축법을 활용한다. 본 연구에서는 Tenax TA를 이용하여 화재증거물 속의 인화성물질을 농축한 후 자동열탈착 장비를 사용하여 Tenax TA관 속에 농축되어 있는 인화성물질을 자동열탈착시켜 GC로 보낸 후 MS 분석하는 기술을 소개한다. 이러한 전처리과정을 사용하여, 화재증거물속의 인화성물질(경유, 등유 등)을 분석하였는데, 물로 화재증거물을 물을 이용하여 소화하여도, 시간이 오래지난 화재증거물이라도 열탈착 장비를 이용한 분석은 경유, 등유등을 확인하는데 유용하였다.

• Journal of Internet Computing and Services
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• v.11 no.4
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• pp.129-141
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• 2010

In digital computing environment, for the mal functions in appliances and system errors, the unaccepted intrusion should be occurred. The evidence collecting technology uses the system which was damaged by intruders and that system is used as evidence materials in the court of justice. However the collected evidences are easily modified and damaged in the gathering evidence process, the evidence analysis process and in the court. That’s why we have to prove the evidence’s integrity to be valuably used in the court. In this paper, we propose a mechanism for securing the reliability and the integrity of digital evidence that can properly support the Computer Forensics. The proposed mechanism shares and manages the digital evidence through mutual authenticating the damaged system, evidence collecting system, evidence managing system and the court(TTP: Trusted Third Party) and provides a secure access control model to establish the secure evidence management policy which assures that the collected evidence has the corresponded legal effect.

• Journal of Convergence for Information Technology
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• v.9 no.11
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• pp.15-21
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• 2019

Allowing only authorized users to record and inquire in the ledger, private blockchain technology is attracting attention from institutions and companies. Based on distributed ledger technology, records are immutable. Because news via the Internet can be easily modified, the possibility of manipulation is high. Some false communication report systems are designed to prevent such harm. However, during the gap between the false communication report and verification time, contents on the website can be modified, or false evidence can be submitted intentionally. We propose a system that collects evidence using a headless browser for more accurate false communication management, and securely preserves evidence through a private blockchain and prevents possibilities of manipulation. The proposed system downloads original HTML, captures the website as an image, stores it in a transaction along with the report, and stores it in a private blockchain to ensure the integrity from acquisition to preservation of evidence.

• Review of KIISC
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• v.12 no.5
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• pp.8-16
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• 2002

컴퓨터 범죄는 급격히 증가하고 있으나 일반적인 범죄에서와는 달리 컴퓨터 파일과 같은 무형의 정보는 증거물로 확보하는 것이 어렵기 때문에 기술적인 측면과 함께 법적 효력을 갖춘 증거물을 확보하기 위한 수집, 확보 및 효과적인 분석 기법이 제시되어야 한다. 이에 본 연구에서는 컴퓨터 포렌식스 기술을 정의하고 유형별로 분류하며, 컴퓨터 범죄 등에 대한 증거물 확보와 분석을 위한 절차 및 방법론 등을 고찰한다. 또한 효율적인 분석을 위해 국외에서 개발된 컴퓨터 포렌식스 도구에 대해 고찰하여, 인터넷 기술이 발전하고 정보화가 급속도로 확산되면서 그 중요성이 날로 증대하고 있는 컴퓨터 포렌식스 기술의 발전 방향을 제시하고자 한다.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2011.04a
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• pp.37-40
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• 2011

화재현장에서는 화재의 원인으로 간주되는 여러 가지 증거물이 발생한다. 이러한 증거물을 분석하기 위한 수단으로 GC/MS의 역할은 아주 크며, 이를 이용한 증거물의 분석에 관한 표준으로 ASTM 1618-10과 전처리법을 소개한다. 또한 전처리법에 따른 여러 가지 종류의 유류의 특성을 알아보고 유류 성분을 포함한 화재증거물의 실제 사례를 들어 보겠다. 아울러 화재현장에서의 가연물로 추정되는 물질에 대하여 열분해를 통한 GC/MS 분석 사례도 제시하여 본다.

• Fire Science and Engineering
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• v.25 no.6
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• pp.14-20
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• 2011

It is very difficult for fire investigators to analyze the fire debris in fire scene to figure out the reason of fire. ASTM E 1618 method with Gas Chromatoghraphy-Mass Spectrometry was used to analyze the ignitable liquid residues in fire debris prepared in our laboratory. According to fire cases, sample handling procedure methods and fire debris store time, different total ion chromatograms were obtained. We wish the study will be helpful to fire investigators to figure out the reason of fire.

• Journal of the Society of Disaster Information
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• v.13 no.2
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• pp.267-275
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• 2017

This research is about the development of e-forensic tool that extract & analyze different forms of digital evidence that individuals come across in a disaster scene. The tool utilizes digital forensic techniques which makes the tool efficient in any disaster analysis situation. In order for the forensic evidence to be selected as legal evidence, the evidence needs to be proven that it is in its original state with no forgery involved. This is where the e-forensic tool comes in, as its ability to collect digital evidence during investigation has proven; that the tool can keep the evidence in its original state and increase the integrity by generating hash TAG and adding the forensic evidence to a password encoded file.

• Journal of Science Criminal Investigation
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• v.11 no.4
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• pp.276-282
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• 2017

As evidence that can be obtained at the crime scene, the importance of micro-evidences has been recognized in recent years with the development modern molecular-level analytical techniques. These micro-evidences include substances useful for personal identification such as DNA, but it is difficult to collect only the evidences showing individual characteristics every time at the crime scene. Therefore, development of new research approaches for the discovery and application of micro-evidence candidates is in increasing demand. For this purpose, skin microbial communities of bacteria inhabiting the palms of 16 people were collected and terminal-restriction enzyme fragment length polymorphism (T-RFLP) analysis was carried out to examine the potential for the application in personal identification. As a result, 16 different electropherograms were obtained, and various taxa including Staphylococcus and Bacillus were shown to produce different T-RF profiles among individuals. These results were analyzed with the factors affecting the microbiota such as sex and working environment of individuals.

• 발명특허
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• v.9 no.9 s.103
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• pp.60-61
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• 1984

• Fire Science and Engineering
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• v.27 no.2
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• pp.70-74
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• 2013

It is very important for the collected samples at fire scenes to be properly preserved for laboratory analysis. Preserving abilities of four type containers, metal cans, glass jars, zipper and heat sealed polymer bags, with the five ignitable liquids (toluene, n-octane, o-xylene, n-decane and n-hexadecane) were examined with gas chromatography-mass spectrometry. The glass jars with Teflon (PTFE) liner were the best ability to prevent the evaporation of the ignitable liquids.