• Proceedings of the Korean Society of Computer Information Conference
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• 2020.07a
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• pp.177-179
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• 2020

본 논문에서는 경찰청에서 제공하는 2019년 민간경비업체와 민간경비원의 현황을 통해서 민간경비의 다양한 해석과 사각으로 이론적 기반을 마련하는 것을 목적으로 한다. 민간경비업체와 경비원 수는 총 5356개와 16만 3177명으로 나타났다. 현황으로 살펴본 민간경비업의 특징은 크게 4가지가 나타났다. 첫 번째 민간경비업체 수와 경비원의 수가 수도권으로 집중되었다. 기계경비원을 제외하고 53%~89%가 수도권(서울·경기·인천)에 집중되었다. 두 번째, 시설경비에 대한 집중이다. 시설경비가 민간경비업체와 경비원 수에 차지하는 비율은 각각 83%와 86%를 차지함으로써 경비업법에 의한 구분이 아닌 경비원은 곧 시설경비원을 뜻하는 것처럼 느껴지게 되었다. 세 번째, 비정상적인 신변보호 업체 수와 경비원 수이다. 2019년 기준으로 신변보호 업체의 수보다 신변보호원이 없는 상황이 발생하고 있고, 이는 허가만 유지, 시설경비업무와 경계모호, 신고 누락, 자체경비 전환으로 인한 것으로 보인다. 네 번째, 특수경비업의 특수성이다. 국가중요시설에서 일하는 특수경비원은 국가의 정책에 따라서 한국공항공사의 한공보안파트너스, 인천공항공사의 인천공항경비를 자회사로 하고 정규직 전환을 진행 중에 있기 때문에 특수경비업체 수와 경비원 수의 변화는 불가피한 것으로 보인다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.14 no.9
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• pp.3858-3869
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• 2020

In this paper, we propose a hash-chain based friendly force identification protocol for personal combatants equipped with a personal combat system in a tactical wireless network. It is imperative in military operations to effectively and quickly identify friendly forces. If the identification of friendly forces is not correct, this can cause friendly fire. In current ground operations, the identification of friendly forces by personal combatants is neither secure nor safe. To address this issue, the proposed protocol uses a hash-chain to determine if a detected person is friendly. Only friendly forces with the same materials that are assigned before they deploy can construct an initial hash-chain. Moreover, the hash-chain is changed at specific times. The performance of the proposed protocol is evaluated on the assumption that the secret key is leaked, which is the worst scenario in the security research field. We verify that the proposed protocol is secure for the various attack scenarios, such as message replay attack, fabrication attack, and Denial of Service attack.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.16 no.12
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• pp.4062-4080
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• 2022

COVID-19, a highly infectious disease, has affected the globe tremendously since its outbreak during late 2019 in Wuhan, China. In order to respond to the pandemic, governments around the world introduced a variety of public health measures including contact-tracing, a method to identify individuals who may have come into contact with a confirmed COVID-19 patient, which usually leads to quarantine of certain individuals. Like many other governments, the South Korean health authorities adopted public health measures using latest data technologies. Key data technology-based quarantine measures include:(1) Electronic Entry Log; (2) Self-check App; and (3) COVID-19 Wristband, and heavily relied on individual's personal information for contact-tracing and self-isolation. In fact, during the early stages of the pandemic, South Korea's strategy proved to be highly effective in containing the spread of coronavirus while other countries suffered significantly from the surge of COVID-19 patients. However, while the South Korean COVID-19 policy was hailed as a success, it must be noted that the government achieved this by collecting and processing a wide range of personal information. In collecting and processing personal information, the data minimum principle - one of the widely recognized common data principles between different data protection laws - should be applied. Public health measures have no exceptions, and it is even more crucial when government activities are involved. In this study, we provide an analysis of how the governments around the world reacted to the COVID-19 pandemic and evaluate whether the South Korean government's digital quarantine measures ensured the protection of its citizen's right to privacy.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.05a
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• pp.606-608
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• 2014

Recent smartphone users constantly increases, an increase in malicious applications smartphones indiscretions exists within the Terminal, through the deployment of privacy disclosure, Singh and other victims also are on the rise. A typical personal way to malicious code masquerading as a normal application and install it on the handset of my text message or a personal note, such as personal information, the certificate directory, is the way that leaked. Therefore, to obtain permission to attack the root Terminal event by collecting malware infections and respond to determine whether it is necessary for the technique. In this paper, check the features of a Smartphone in real time systems, to carry out a study on the application throughout the Terminal to collect my attack event analysis, malware infection can determine whether or not the mobile security monitoring system. This prevents a user's personal information and take advantage of the top and spill are expected to be on the field.

• The KIPS Transactions:PartC
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• v.11C no.2
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• pp.219-228
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• 2004

Wireless LAN(wireless Local Area Network) is constructed network environment by radio in indoors or outdoors environment and that to use electric wave or light instead of wire to client such as PC(Personal Computer), notebook, PDA in hub(Hub) in technological side. Now, among IEEE 802.11 WG(Working Group), there is TGf(Task Group F) that develop standard protocol between AP's(Access Point). In this group, proposed IAPP(Inter Access Point Protocol) to secure interoperability between AP producing in different manufacturer, this offers seamless connectivity between STA by sharing Security Context information or Layer 2 forwarding information between AP without passing through re-authentication process when STAs(Station) move by protocol to secure mobility between AP that differ in equal serve network. In this paper, I wish to suggest method that change avenue of communication of message to block information leakage that can occur at security message or WEP Key transmission between above AP, and uses public key to offer wireless area security little more.

• Journal of Service Research and Studies
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• v.5 no.2
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• pp.93-101
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• 2015

Today, various access security technology appeared in this society as a result of the informatization and automation. Most building, floor, or door security certification system for the office units are installed, but there are many inconvenient matters. In order to minimises this, we used the face recognition function via the camera, and various sensors. In this paper, I designed the access security system through physical computing which Arduino offered, facial recognition program, and Twitter. Check that the personal information stored in the individual RFID tag is matched to the personal information stored on the existing server. Face recognition program input the face using a camera, and allow to confirm the identity. The system's abnormal or when the unauthenticated person is to penetrate, the system transmits the Twitter status message to the manager. It was designed continuously to monitor the status in real time in this way.

• The KIPS Transactions:PartC
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• v.8C no.6
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• pp.741-756
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• 2001

With the development of computer systems, there has been a sharp increase in the threats on these systems including attacks by malicious programs such as virus, vandal, etc. Currently virus vaccines are widely used to thwart these threats, but they have many weaknesses. They cannot guard against unknown threats and sometimes, they also cannot detect the existence of malicious programs before these malicious programs make any destructive results. For lack of an efficient security model, the existing security programs have the problem that they raise many false-positive alarms in spite of normal action. So it becomes very important to develop the improved security program that can make up for the weakness of the existing computer security program and can detect many threats of malicious programs as early as possible. In this paper we describe the design of an improved security model and the implementation of a security program that can filter and handle the threats on computer systems at the kernel level in real time.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 2001.11a
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• pp.273-276
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• 2001

현재까지 대부분의 침입탐지 시스템은 서브 네트워크를 대상으로 구현되어 왔다. 하지만 초고속 통신망의 급속한 보급으로 인해 많은 개인 컴퓨터가 네트워크에 연결되어 있어 개인 컴퓨터에 대한 보안이 점점 요구되고 있다. 그러나 기존의 서브 네트워크형 침입탐지 시스템을 개인 컴퓨터에서 사용하기에는 환경이 적절치 못하기 때문에 개인컴퓨터 환경에 적합한 침입탐지 시스템 모델이 필요하다. 따라서 본 논문에서는 개인 컴퓨터 환경에 적합한 침입탐지 시스템을 설계/구현하고자 한다.

• Journal of the Korea Society of Computer and Information
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• v.11 no.6 s.44
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• pp.193-200
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• 2006

RFID technology has been gradually expanding its application areas however studies on personal space infringement along with security are insufficient. This paper proposes a new security protocol access time interval scheme and RSA algorithm to analyze existing RFID security protocol and attempts to solve the problem of lightweight protocol. Information protection for two-way channels can be enforced through the proposed protocol and other issues of sniffing and man-in-the-middle attacks can be solved by applying a mutual certification technique application among tag readers.

• International Journal of Computer Science & Network Security
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• v.21 no.11
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• pp.321-327
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• 2021

Mobile devices have recently developed to be an integral part of humans' daily lives because they meet business and personal needs. It is challenging to design a feasible and effective user authentication method for mobile devices because security issues and data privacy threats have significantly increased. Biometric approaches are more effective than traditional authentication methods. Therefore, this paper aims to analyze the existing biometric user authentication methods on mobile platforms, particularly those that use face recognition, to demonstrate the methods' feasibility and challenges. Next, this paper evaluates the methods according to seven characteristics: universality, uniqueness, permanence, collectability, performance, acceptability, and circumvention. Last, this paper suggests that solely using the method of biometric authentication is not enough to identify whether users are authentic based on biometric traits.