• Proceedings of the Korean Society of Computer Information Conference
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• 2023.07a
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• pp.207-208
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• 2023

다크웹을 통한 마약, 금융거래, 해킹 등 사이버 범죄가 증가하면서 다크웹 상의 범죄 추적을 위한 사이버 수사 필요성이 증대되고 있다. Tor와 같은 다크웹 접속 브라우저는 강력한 익명성을 제공하기 때문에 주로 다크웹 운영상의 취약점 분석, 악성코드를 활용한 함정수사 기법이 실효성 높은 다크웹 수사 기술로 간주된다. 그러나 사이트 개설 및 폐쇄가 빈번하게 발생하는 다크웹의 특성상 최신 범죄 정보를 수집하기 위해서는 방대한 다크웹 정보를 실시간 수집하고, 능동적으로 검색 키워드를 확장할 수 있는 고도화된 크롤러 기술 개발이 필요하다. 본 논문은 다양한 다크웹 사이트 중, 아동 음란물 사이트를 크롤링을 통해 수집하고, 수집된 텍스트의 연관 분석을 통해 검색 키워드를 확장하는 수집 체계를 제안한다.

• Annual Conference of KIPS
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• 2023.11a
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• pp.276-278
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• 2023

본 연구는 입력된 수사문건에 대해 시간 속성을 기반으로 범죄사건의 흐름을 나타내는 스토리라인을 자동으로 시각화하여 사건의 전체적인 흐름에 대한 이해도를 향상하는 데 도움을 주는 범죄사실에 특화된 스토리라인 시각화 인터페이스에 관한 연구이다. 이를 위해 객관적인 사실 관계 파악과 논증 검증이 중요한 범죄수사에서 중요한 자료인 판결문 데이터를 활용하였으며, 판결문 중에서도 육하원칙에 따라 해당 범죄의 구성요건적인 특징이 명확히 기재되어 있는 범죄사실을 대상으로 하여 사건의 흐름에 따라 추출된 데이터를 자동으로 시각화하였다. 이는 현장에서 실무자들이 범죄사건의 흐름을 쉽고 빠르게 파악하고 더 나아가 종합적이고 입체적으로 파악하는 데 도움이 될 것으로 기대된다.

• CHINESE LITERATURE
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• v.99
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• pp.61-85
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• 2019

這篇論文原來開始了於一個把 《吳越春秋》想看成小說書的意圖. 以成就那個目的的方法, 我在 這兒分析了《吳越春秋》裏面的各種敍述表現。《吳越春秋》的作者通過史實的記述不但追究了歷史的知識跟敎訓而且通過表現的方法注重了構 思與小說一樣的文體。所以作者的敍述表現在硏究 《吳越春秋》方面上不得不重視. 我發見了《吳越 春秋》裏面的重要的敍述方法如下。 第一, 作者運用了各種修辭法。作者爲了《吳越春秋》的文學的表現使用了如隱喩法⋅直喩法⋅諷喩 法⋅誇張法⋅漸層法等等的各種修辭。 第二, 作者運用了很多的對話。連續不斷的對話使文章具有展開事件的功能。此外, 我發見了對 話的使用讓讀者把握人物的性格。 第三, 作者多用了細密化的表現。描寫, 特別是人物描寫與場面描寫, 在基本上異於簡略事件的歷史記述, 這使讀者認識《吳越春秋》是一篇的初步小說。 总而言之,《吳越春秋》裏面的各種修辭⋅對話的使用⋅細密化的表現使人們覺得作者憑藉記述歷史的借口而寫成一篇的歷史小說。我信如此的筆法運用讓《吳越春秋》成一本進入小說的段階的典籍。

• Korean Security Journal
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• no.46
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• pp.113-140
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• 2016

Right to counsel means a defendant has a right to have the assistance of counsel (i.e., lawyers), and if the defendant cannot afford a lawyer, requires that the government appoint one or pay the defendant's legal expenses. The right to counsel is generally regarded as a constituent of the right to a fair trial. Historically, however, not all countries have always recognized the right to counsel. The right is often included in criminal law and constitutional law etc. First, any person who is arrested or detained shall have the right to prompt assistance of counsel. When a criminal defendant is unable to secure counsel by his own efforts, the State shall assign counsel for the defendant as prescribed by act in article 12(4) of the constitutional law. Second, the defense counsel or a person who desires to be a defense counsel may have an interview with the defendant or the suspect who is placed under physical restraint, deliver or receive any documents or things and have any doctor examine and treat the defendant or the suspect in article 34 of the criminal law. Nonetheless, problems about guarantee of the rights to counsel to the national security violators like spy terrorist and etc will be important for Koreans to consider. That is because national security violators's cases are qualitatively different from general criminal offense's cases and historically, lawyer obstruct a investigation in the process of examination of a suspect for national security violators. Therefore, this study suggest a way that a restriction the rights to counsel with an attorney in cases of the national security violators. To this end, in this paper, I touch on restriction of right to counsel during interrogation in the England and Germany etc in comparison to that of Korea and review Korea's Supreme Court decision and Constitution Court decision to understand the prospective and trends for Korean investigation procedure improvement.

• International Commerce and Information Review
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• v.19 no.3
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• pp.197-214
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• 2017

It requires professional knowledge and much time to judge intellectual property rights infringement. The duties of customs administration are the balance between the propositon of trade facilitation through rapid clearance and the thesis of social security through exact examination. There is a view that the criminal procedure law control is necessary to the goods inspection of clearnce procedure if it is related to crimianl investigation. However, it seems that the customs law does not consider the goods inspection investigation as the investigation under judicial control, but only the mere administrative investigation. It can be said that the inspection of goods by customs law functioning as a clue of investigation is confined to the ordinary goods inspection, including the screening test. Searching for specific articles by specific informaition should be under the control of criminal procedure law because it constitutes the commencement of criminal investigation in criminal cases. This interpretation could be an opportunity as a harmonious operation between the goods inspection of customs clearance and the search and seizure of criminal procedure.

• The Journal of Bigdata
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• v.4 no.2
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• pp.23-34
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• 2019

Recently, the crime that utilizes the digital platform is continuously increasing. About 140,000 cases occurred in 2015 and about 150,000 cases occurred in 2016. Therefore, it is considered that there is a limit handling those online crimes by old-fashioned investigation techniques. Investigators' manual online search and cognitive investigation methods those are broadly used today are not enough to proactively cope with rapid changing civil crimes. In addition, the characteristics of the content that is posted to unspecified users of social media makes investigations more difficult. This study suggests the site-based collection and the Open API among the content web collection methods considering the characteristics of the online media where the infringement crimes occur. Since illegal content is published and deleted quickly, and new words and alterations are generated quickly and variously, it is difficult to recognize them quickly by dictionary-based morphological analysis registered manually. In order to solve this problem, we propose a tokenizing method in the existing dictionary-based morphological analysis through WPM (Word Piece Model), which is a data preprocessing method for quick recognizing and responding to illegal contents posting online infringement crimes. In the analysis of data, the optimal precision is verified through the Vote-based ensemble method by utilizing a classification learning model based on supervised learning for the investigation of illegal contents. This study utilizes a sorting algorithm model centering on illegal multilevel business cases to proactively recognize crimes invading the public economy, and presents an empirical study to effectively deal with social data collection and content investigation.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.29 no.1
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• pp.77-91
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• 2019

Recent Linux operating systems having been increasingly used, ranging from automotive consoles, CCTV, IoT devices, and mobile devices to various versions of the kernel. Because these devices can be used as strong evidence in criminal investigations, there is a risk of destroying evidence through file deletion. Ext filesystem forensics has been studied in depth because it can recovery deleted files without depending on the kind of device. However, studies have been carried out without consideration of characteristics of file system which may vary depending on the kernel. This problem can lead to serious situations, such as those that can impair investigative ability and cause doubt of evidence ability, when an actual investigation attempts to analyze a different version of the kernel. Because investigations can be performed on various distribution and kernel versions of Linux file systems at the actual investigation site, analysis of the metadata changes that occur when files are deleted by Linux distribution and kernel versions is required. Therefore, in this paper, we analyze the difference of metadata according to the Linux kernel as a solution to this and recovery deleted file. After that, the investigating agency needs to consider the metadata change caused by the difference of Linux kernel version when performing Ext filesystem forensics.

• Korean Journal of Plant Resources
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• v.35 no.2
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• pp.346-361
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• 2022

Food poisoning accidents caused by poisonous plants occur every year. As certain poisonous plants are mistaken for edible plants causing food poisoning, accurate species identification of poisonous plants is required. DNA barcodes suitable for species identification of poisonous plants and database that can be used for accurate species identification are necessary for their use in forensic cases. In this study, species identification of 19 poisonous plants native to Jeju Island using seven DNA barcodes (trnH-psbA, trnL-trnF, trnL intron, rbcL, matK, ITS1-ITS4, 18S rRNA) was performed to construct a database containing sequence information and DNA barcode universality. trnL-trnF barcode and ITS1-ITS4 barcode were the easiest markers for PCR amplification and sequence retrieval, and the combination of the two barcodes enabled single species identification in 18 out of 19 plants. Therefore, when an investigation of unknown poisonous plants is requested, combination of trnL-trnF and ITS1-ITS4 barcodes is considered as a primary marker for species identification. The database of recommended DNA barcodes for each poisonous plant presented in this study will be helpful in plants poisoning cases.

• Analytical Science and Technology
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• v.20 no.3
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• pp.219-226
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• 2007

Glass is frequently encountered as types of materials that are submitted to forensic science laboratories as a result of trace evidence transfers. The repeatability and the reproducibility of trace element analysis were presented. An analysis of variance (ANOVA) was performed on laser ablation inductively coupled plasma spectrometric analyses of the fragments to identify the source. Pairwise comparisons were completed for all samples. In a pairwise comparison, each sample was compared to each other for a possible [n(n-1)/2] (n : numbers of the samples) total comparison to associate/discriminate samples using Tukey's HSD method. The aim of this study was to determine the utility of LA-ICP-MS for multi-element analysis of forensic samples. The 12 glass fragments from two manufacturers were collected and analyzed to identify the source. An analysis of variance (ANOVA) was performed on 31 elements in NIST 612 Trace elements in Glass. Elements were classified into four categories defined by the combination of precision and variation of inter-samples. We selected 11 elements, 209Bi, 90Zr, 121Sb, 178Hf, 59Co, 238U, 208Pb, 140Ce, 118Sn, 49Ti and 137Ba. 6 pairs out of 66 possible pairs were not distinguished when compared by 137Ba (p<0.05). However, all samples were distinguished using both 49Ti and 137Ba (p<0.05). In conclusion, multi-elemental analysis with LA-ICP-MS is a potential tecnique for the discrimination of forensic samples.

• Nuclear industry
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• v.38 no.2
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• pp.4-12
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• 2018

전북교육청은 2015년에 탈핵교과서라는 이름으로 <탈핵으로 그려보는 에너지의 미래>라는 책을 내고 전북도 내 모든 초 중 고 학교에 배포하여 각 학교에서 수업 보조 교재로 활용하도록 했으며 2016년에는 개정판을 내기도 했다. 본고에서는 교재의 내용을 검토하고 이에 대한 과학적인 문제점을 지적하고자 한다. 이를 통하여 탈핵 주장이 상징(象徵)과 수사(修辭)를 통하여 구현해낸 그림의 허구적 실체임을 드러내고 이러한 탈핵 주장이 정규 교육의 일부가 되는 상황에 대한 문제를 제기하고자 한다. 본고는 2015년판 탈핵교재를 기준으로 작성하였다.