• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.5B
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• pp.386-394
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• 2008

Adoption of wireless communication facilities in mobile devices leads to increased vulnerability in individual privacy. One of such cases was discovered when a smart mobile phone of Paris Hilton at Oscar Award Ceremony was hacked a Swedish group of hackers. In this study, I wondered what sort of personal information could be exposed to hackers in such cases. In the course of survey, it was recognized that technical analysis of flash memory in mobile devices to check what kinds of data are stored there is technically almost impossible, since they are usually built in a proprietary manner. No generic tools could apply to discover their contents. Having recognized technical difficulties, it was inevitable to resort to a questionnaire survey to see awareness level with regard to personal privacy. We collected response from three hundred respondents by posting the questionnaire at World Survey on-line research site. What we have discovered was quite astonishing that even personal residence registration numbers have been found from nine of every ten respondents. Other data revealed include phone numbers, names, and personal bank accounts.

• Proceedings of the Korea Multimedia Society Conference
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• 2012.05a
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• pp.63-66
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• 2012

최근 스마트 기기는 결제, 할인쿠폰 등 각종 기능을 제공하는 수단으로 진화되면서 통신과 금융이 융합된 모바일 NFC 서비스의 시장이 급성장할 것으로 전망되고 있다. 특히 모바일 NFC 결제 서비스 시장의 활성화가 예상됨에 따라 모바일 NFC 결제 서비스는 국내 외적으로 널리 주목받고 있다. 하지만 이에 따른 NFC 기술 활용 증가로 개인정보 이용이 늘면서 침해요소 또한 증가하고 있다. 최근 한국인터넷진흥원에서 발표한 "NFC 개인정보보호 대책 최종보고서"에 따르면 개인정보 암호화를 부분적으로 미지원하거나 불필요한 개인정보의 과도한 수집 및 저장 등이 문제점으로 제기되었으며 Google사의 Google Wallet 서비스의 개인정보 유출 사고 또한 이러한 문제점을 뒷받침하는 근거가 되고 있다. 본 논문에서는 기존의 NFC 모바일 결제 서비스 상에서 결제정보를 이용한 결제 기술의 위협을 분석하고 결제정보를 직접적으로 사용하지 않고 결제자를 증명할 수 있는 NTRU기반 영지식 증명 기법을 제안한다.

• Proceedings of the Korea Contents Association Conference
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• 2014.11a
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• pp.277-278
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• 2014

사물인터넷(IoT)은 '개방형 환경에서 인터넷을 기반으로 사람, 사물, 데이터 및 프로세스를 서로 연결하여 정보를 교류하고 상호 소통하는 지능형 인프라'로서 홈 가전, 교통 물류, 건설, 에너지, 헬스케어, 사회안전 등 여러 분야에서 새로운 상품을 개발하고 공급해 창조경제의 핵심동력 가운데 하나가 될 것으로 기대된다. 그러나 네트워크, 서비스, 플랫폼/디바이스 등 기반 환경에서 다양한 개인정보 침해에 대한 위협이 존재하며 개인정보 보호와 기술 활용이라는 이슈에 관한 논의는 아직 초기 단계에 있다. 따라서 본 연구에서는 IoT 환경에서 정보주체의 민감한 개인정보에 대한 안전한 보호 정책 적용과 효율적 정보기술 활용 및 제공이 가능한 개인정보보호 프레임워크를 제안하고자 한다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.22 no.1
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• pp.107-115
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• 2012

The level of information protection is relatively low, in comparison with the informatisation in this country. The budget for information protection is also quite marginal at 5% of the entire information-related policy budget. The passive information protection practices by companies, which focus more on the aftermaths, lead to repeated expenses for risk management. The responses to the violation of information protection should be changed from the current aftermaths-oriented focus to prevention and early detection of possible violations. We should also realize that the response to a violation of protected information is not a responsibility of an individual but a joint responsibility of the nation and the industry. South Korea has been working towards to building a systematic foundation since 2004 when guidelines were announced regarding the information protection policy and the safety diagnosis. The current level of safety policies cannot provide a perfect protection against actual violation cases in administrative, technological and physical ways. This research evaluates the level of prevention that the current systematic protection policy offers, and discusses its limitation and possible ways for improvement. It also recommends a list effective measures for protection against information violation that companies can employ to maintain the actual target safety level.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.18 no.4
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• pp.167-174
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• 2008

As both a digital camera and a digital camcorder are popularized in recent years, UCC created by general users is also popularized. Unfortunately, according to that, the lack of privacy is also increasing more and more. The UCC is saved on the recordable media(Media) like DVD and deposited personally as well as distributed through Internet portal service. If you use Internet portal service to put up your contents, you can partially prevent the violation of privacy using security technologies such as authentication and illegal copy protection offered by internet portal service providers. Media also has technologies to control illegal copy. However, it is difficult to protect your privacy if your Media having personal contents is stolen or lost. Therefore, it is necessary to develope an additional security mechanism to guarantee privacy protection when you use Media. In this paper, we describe AACS framework for Media Security and propose improved AACS framework to control the access to personal contents saved on Media.

• 정보보호뉴스
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• s.128
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• pp.21-23
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• 2008

정보보호 담당자가 해야 할 일들이 점차 많아지고 있다. 침해사고 대응을 비롯해, 내부 정보 유출방지, 개인정보보호, 보안 프로세스 확립, 보안활동에 대한 평가까지. 그럼에도 정보보호팀이나 관련 부서가 수행해야 하는 여러 업무 가운데 가장 기본적인 임무는 해커의 공격으로부터 기업의 IT 자산을 안전하게 보호하는 것일 수 밖에 없다. 인터파크 지마켓 보안팀은 그 기본에 가장 충실한 곳으로 손꼽히는 곳이다.

• Journal of the Korea Society of Computer and Information
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• v.17 no.11
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• pp.101-105
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• 2012

Various social problems through violating personal information and privacy are growing with the rapid spread of smartphones. For this reason, variety of researches and technology developments to protect personal information being made. The smartphone, contains almost all of the personal information, can cause data spill at any time. Collecting or analyzing evidence is not an easy job with forensic analyzing tool. Android forensics research has been focused on techniques to collect and analyze data from non-volatile memory but research for volatile data is very slight. Android log is the non-volatile data that can be collected by volatile storage. It is enough to use as a material to track the usage of the Android phone because all of the recent driven records from system to application are stored. In this paper, we propose a method to respond to determining the existence of personal information leakage by filtering logs without forensic analysis tools.

• Information Systems Review
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• v.16 no.2
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• pp.1-23
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• 2014

With side effects such as Phishing and Spam using personal information in Social Network Service, there is a growing need for studies related to harmful behaviors such as the reason for privacy violation. As such, this study assumed privacy violation to be ethical decision, making behavior and used the Theory of Planned Behavior and Motivation Theory, which are mostly used in social science to identify the factors affecting privacy violation. The results suggested that the Perceived Enjoyment and Punishment used in motivation studies affected privacy violation behaviors, and that the factors of the Theory of Planned Behavior such as Attitude toward Privacy Violation, Subjective Norms of Privacy Violation, and Perceived Behavioral Control with regard to Privacy Violation significantly influenced the Intention to Privacy Violation. On the other hand, Perceived Curiosity and Subjective Norms of Privacy Violation did not affect the Intention to Privacy Violation. Therefore, this study confirmed that the Theory of Planned Behavior was appropriate to explain the Intention to Privacy Violation, and that the variables of the Motivation Theory generally influenced the Attitude toward Privacy Violation. This study was significant since it extended the scope of theoretical privacy study from users and victims centered to inflictor and applied the Extended Theory of Planned Behavior using the variables of the Motivation Theory in the study of Intention to Privacy Violation. From the practical aspect, it provided the ground for privacy education based on the fact that the Attitude toward Privacy Violation can be curbed when education on the Privacy Concerns, Perceived Enjoyment, and Punishment with regard to privacy is strengthened. It also cited the need for the punishment of privacy violation and the practical ground to amend the terms and conditions of user license and Personal Information Protection Act to provide policy support.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.19 no.6
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• pp.121-134
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• 2009

Consumer-centric marketing business is surely one of the most successful emerging business but it poses a threat to personal privacy. Between the service provider and the user there are many contrary issues to each other. The enterprise asserts that to abuse the privacy data which is anonymous there is not a problem. The individual only will not be able to willingly submit the problem which is latent. Web traffic analysis technology itself doesn't create issues, but this technology when used on data of personal nature might cause concerns. The most criticized ethical issue involving web traffic analysis is the invasion of privacy. So we need to inspect how many and what kind of personal informations being used and if there is any illegal treatment of personal information. In this paper, we inspect the operation of consumer-centric marketing tools such as web log analysis solutions and data gathering services with web browser toolbar. Also we inspect Microsoft explorer-based toolbar application which records and analyzes personal web browsing pattern through reverse engineering technology. Finally, this identified and explored security and privacy requirement issues to develop more reliable solutions. This study is very important for the balanced development with personal privacy protection and web traffic analysis industry.

• Review of KIISC
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• v.23 no.2
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• pp.7-13
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• 2013

전 세계적으로 스마트폰의 시장 점유율은 지속적으로 증가하고 있다. 국내도 해당 기기의 사용 편의성과 이를 이용할 수 있는 다양한 앱과 서비스의 출시로 개인 사용자와 기업, 그리고 정부를 포함한 공공기관에서 스마트폰 사용이 크게 늘어나고 있다. 스마트폰의 이용실태를 살펴보면 개인의 경우 인터넷 게임, SNS, 금융 서비스를 중심으로 이용하고 있으며, 기업, 정부와 공공기관도 업무 효율화에 적극적으로 활용하고 있다. 이와 같은 개인화된 기기인 스마트폰을 이용한 사용자의 이용확대와 다양한 서비스의 증가로 인해 사용자의 공인인증서와 같은 민감한 개인 정보를 포함해서 기업, 공공기관의 정보 자산이 해당 기기에 저장 되고 있는데, 개인 정보와 가치 있는 정보를 악의적인 방법을 이용해서 유출 및 수집 하여 불법적인 이득을 얻으려는 보안 위협 및 침해가 꾸준히 증가하고 있다. 이와 같은 보안 위협의 지속적인 증가로부터 스마트폰 환경에서 사용자를 안전하게 보호하기 위한 보안 프로그램이 꾸준히 출시되고 있다. 스마트폰의 경우는 기존의 PC 보다 컴퓨팅 파위가 낮고, 실행 환경이 제약적이기 때문에 성능을 고려한 보안 프로그램의 개발이 필요하다. 이에 본 고에서는 안드로이드 기반의 보안 프로그램을 개발할 때 고려 할 수 있는 성능 향상 방법을 살펴보도록 한다.