• Journal of the Korea Institute of Information Security & Cryptology
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• v.26 no.1
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• pp.109-115
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• 2016

Nowadays, smart devices are the target of the digital forensic investigation. Among various smart devices, we can obtain much information from smart phone which is provided with continuous power and used for data communication. This paper deals with the traces to be left in Android smart phones after using the navigation applications with the GPS function. We selected navigation applications(domestic and overseas) which have a high number of download times, anaylzed them and discussed the meaning of the analysis result in digital forensic investigation.

• The KIPS Transactions:PartB
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• v.14B no.1 s.111
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• pp.33-42
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• 2007

This paper presents a new methodology for music structure analysis which facilitates rhetoric-based music summarization. Similarity analysis of musical constituents suggests the structure of a musical piece. We can recognize its musical form from the structure. Musical forms have rhetorical characteristics of their on. We have utilized the characteristics for locating musical motifs. Motif extraction is to music summarization what topic sentence extraction is to text summarization. We have evaluated the effectiveness of this methodology through a popular music case study.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.6
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• pp.33-39
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• 2014

An area presenting new opportunities for both legitimate business, as well as criminal organizations, is Cloud computing. This work gives a strong background in current digital forensic science, as well as a basic understanding of the goal of Law Enforcement when conducting digital forensic investigations. These concepts are then applied to digital forensic investigation of cloud environments in both theory and practice, and supplemented with current literature on the subject. Finally, legal challenges with digital forensic investigations in cloud environments are discussed.

• The Journal of the Korea institute of electronic communication sciences
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• v.6 no.1
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• pp.105-110
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• 2011

Embezzlement incident of staff at the casino occurred. Staff of some casinos have lower job satisfaction, moral gap is seriously considering a change jobs. In addition, cash lure of large amounts and a lack of money management system causes embezzlement incident. In this paper, the uniqueness of the casino industry and that employee job satisfaction is investigated. Content analysis of occurrence for casino embezzlement incident and tracking that bank account and bank check, suspect's call list, and so on that digital forensic investigation technology will be studied. Problems and solutions suggest that conducted a loss prevention program, a digital forensics technology and introduce of investigator. Through this study, the computerization of the casino business to embezzlement accident prevent will contribute to that give back profits of property to society, the develop of forensic investigation technology.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2008.02a
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• pp.167-170
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• 2008

해쉬 알고리즘은 디지털 포렌식 수사에서 디지털 증거의 무결성을 증명하기 위해 널리 사용되고 있다. 디지털 증거의 무결성은 동일한 데이터에서만 같은 해쉬 값이 계산된다는 성질에 의하여 증명된다. 일반적으로 동일한 데이터에 대한 해쉬 값은 서로 다른 포렌식 툴을 이용해서 계산을 해도 항상 같은 값이 출력될 것이라고 인식하고 있다. 하지만, CD-R 미디어의 경우에는 해쉬를 계산하는 포렌식 툴에 따라 값이 다르다는 특성이 있다. 이것은 해쉬 값이 CD 제작 도구에서 CD-R 미디어에 데이터를 기록하는 방식과 각 포렌식 툴 별로 CD-R 미디어를 인식하는 방식에 의해 영향을 받기 때문이다. 이러한 특성은 CD-R 미디어의 무결성 증명 시에 문제가 될 여지가 있기 때문에 디지털 포렌식 수사 절차에서 반드시 고려되어야 한다. 본 논문에서는 CD-R 미디어의 해쉬 값에 영향을 주는 요소에 대해 기술하고, 실험용 CD-R 미디어를 제작하여 대표적인 디지털 포렌식 도구들을 이용해서 확인한다. 이를 통해, 디지털 포렌식 수사 절차에서 CD-R 미디어에 대한 해쉬 값을 계산할 때 고려해야 할 사항을 제안한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2019.11a
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• pp.243-245
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• 2019

In the VTS, the predictions of vessel mobility and situation awareness of maritime environment are basic function. In recent years, pilotage information is an essential aware element of VTS personnel for vessel traffic management. So, we designed the structure of pilotage information service with VTS and tested in real environment. In the future, similar pilotage information can be used as a useful VTS service.

• Convergence Security Journal
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• v.7 no.2
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• pp.91-100
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• 2007

Nowadays, there exist many forensic tools in forensic investigation. For common investigator it may cause some difficulty in handling the existing forensic tools. In case of urgent condition, if it takes long time to get the useful evidence from data, then it makes the investigation process difficult. Thus, the common investigator can collect the evidence easily by simple clicking the mouse. The only thing he needs is a tool for examination before investigating in details. Therefore, in this paper we refer to useful information in the forensic investigation, discuss the design and the implementation of tool.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.10a
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• pp.293-295
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• 2015

This paper proposed have been the business card information to the computer when creating business card printing agency saved to a file, there is always the risk of personal information leakage. Application file organization information into the card, the name, phone number, email address information, such as is capable of easily accessible because it is not encrypted. This paper proposed it encrypts the information entered on the Business Card application file to automate the process of the card application and simplifying the business card application process minimizes the work of staff and linked directly to the print shop how to automatically delete the print file after the completion of business card printing and research.

• Journal of the Korea Society of Computer and Information
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• v.10 no.3 s.35
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• pp.287-295
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• 2005

A Study on the Countermeasures against International Computer Crime focusing on the Police Investigation Procedure. These days, much more intelligent, varied and advanced techniques for computer crimes have been used than for development of technology. In particular, it has been reported that the damages are enormous. Damages of some computer crimes can not be accurately reported. This study is to speculate specific types of computer crimes and obtain its prevention and countermeasures centering on the Police Investigation Procedure. In particular, it is to speculate international cooperation under the condition that global damages occur frequently due to preparation of advanced network environment.

• The Korean Journal of Legal Medicine
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• v.42 no.4
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• pp.146-152
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• 2018

We investigated the neural correlates of accurate eyewitness memory retrieval using functional near-infrared spectroscopy. We analyzed oxygenated hemoglobin ($HbO_2$) concentration in the prefrontal cortex during eyewitness memory retrieval task and examined regional $HbO_2$ differences between observed objects (target) and unobserved objects (lure). We found that target objects elicited increased activation in the bilateral ventrolateral prefrontal cortex, which is known for monitoring retrieval processing via bottom-up attentional processing. Our results suggest bottom-up attentional mechanisms could be different during accurate eyewitness memory retrieval. These findings indicate that investigating retrieval mechanisms using functional near-infrared spectroscopy might be useful for establishing an accurate eyewitness recognition model.