• The Journal of the Korea Contents Association
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• v.15 no.2
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• pp.58-73
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• 2015

In the IoT environment, context information is important to provide context service to the user. For this, collected data from devices such as sensors or actuators, converts to context information using the ontology. Because the existing ontologies designed for target service, if the user wants to change the service requirements, service condition, service environment or another service, overall ontology will be redesigned to the changed service. To overcome this difficulty, we propose the cross-vertical ontology model called the Generic Ontology Models(GOMs). It can define the user's desired services without regarding to place and situation. Also, we propose IoT service concept model that represents data flow of the IoT service and IoT service environment. Moreover, as the use case, we show that the proposed GOMs are able to provide the IoT service well.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.31 no.4
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• pp.617-635
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• 2021

Internet of Things (IoT) devices connected to the network without appropriate security solutions have become a serious security threat to ICT infrastructure. Moreover, due to the nature of IoT devices, it is difficult to apply currently existing security solutions. As a result, IoT devices have easily become targets for cyber attackers, and malware attacks on IoT devices are actually increasing every year. Even though several security solutions are being developed to protect IoT infrastructure, there is a great risk to apply unverified security solutions to real-world environments. Therefore, verification tools to verify the functionality and performance of the developed security solutions are also needed. Furthermore, just as security threats vary, there are several security solution s that defend against them, requiring suitable verification tools based on the characteristics of each security solution. In this paper, we propose an high-speed malware propagation tool that spreads malware at high speed in the IoT infrastructure. Also, we can verify the functionality of the security solution that detect and quickly block attacks spreading in IoT infrastructure by using the high-speed malware propagation tool.

• International Journal of Computer Science & Network Security
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• v.22 no.5
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• pp.103-114
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• 2022

The Internet of Things (IoT) is one of the fastest technologies that are used in various applications and fields. The concept of IoT will not only be limited to the fields of scientific and technical life but will also gradually spread to become an essential part of our daily life and routine. Before, IoT was a complex term unknown to many, but soon it will become something common. IoT is a natural and indispensable routine in which smart devices and sensors are connected wirelessly or wired over the Internet to exchange and process data. With all the benefits and advantages offered by the IoT, it does not face many security and privacy challenges because the current traditional security protocols are not suitable for IoT technologies. In this paper, we presented a comprehensive survey of the latest studies from 2018 to 2021 related to the security of the IoT and the use of machine learning (ML) and deep learning and their applications in addressing security and privacy in the IoT. A description was initially presented, followed by a comprehensive overview of the IoT and its applications and the basic important safety requirements of confidentiality, integrity, and availability and its application in the IoT. Then we reviewed the attacks and challenges facing the IoT. We also focused on ML and its applications in addressing the security problem on the IoT.

• Information and Communications Magazine
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• v.33 no.12
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• pp.28-34
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• 2016

최근 IoT 시장이 크게 확대되고 있으며, 이에 따라 IoT 보안의 중요성에 대한 인식도 커지고 있다. 그러나 아직까지 IoT 보안에 대한 정책적 대응은 진행중에 있다. IoT 환경은 실생활과 밀접하게 관련되어 있는 바, 보안 사고가 발생하면 큰 피해가 예상되므로 시급한 보안 대책 수립이 필요한 상황이다. 본 고에서는 IoT 제품의 보안성 관리를 위한 고려사항 및 관리방안을 살펴본다.

• Information and Communications Magazine
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• v.34 no.3
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• pp.90-100
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• 2017

최근 다양한 산업 분야에서 사물인터넷(Internet of Things; IoT)에 관련된 연구가 활발히 진행되고 있다. 기존 네트워크 환경에서와 같이 IoT 또한 다양한 보안 공격으로부터 노출 되어 있으며, 여러 가지 보안 이슈가 존재한다. IoT 환경에서는 디바이스, 플랫폼, 통신프로토콜의 이종성 문제로 인하여 공통의 보안 서비스 제공이 힘들게 되고 이를 해결하기 위하여 상호운용성 제공이 가능한 표준이 필요하게 된다. 본고에서는 다양한 보안 이슈들로부터 안전한 IoT 환경 구축을 위하여, IoT 보안 관련 국내외 표준화 기관를 분석하고, 각 기관에서 제시하고 있는 IoT 보안 관련 표준 및 표준화 동향을 분석하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.04a
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• pp.84-86
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• 2015

전 세계 IoT 시장은 폭발적으로 성장하여 2017년 7조 3000억 달러에 이를 것으로 전망하고 있으며 세계 각국 정부는 IoT 분야를 미래 핵심 성장 동력으로 전망하고, IoT 핵심기술 및 디바이스 개발에 많은 투자를 하고 있다. 따라서 본 논문에서는 최근 IoT 분야 주요기술 현황을 분석하고 그 발전 동향을 제시한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.11a
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• pp.862-865
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• 2020

최근 5G, 인공지능(AI) 등과 함께 사물인터넷 (IoT) 기술이 주목받고 있으며, 보안 위협 또한 증가하고 있다. IoT 기기에 대한 다양한 공격 기법들이 존재하는 만큼 IoT 보안에 관한 연구 또한 활발하게 진행되고 있다. 본 논문에서는 IoT 환경에서의 보안 위협에 대응하기 위한 딥러닝 기반의 탐지기법들의 최신 연구 동향과 앞으로의 방향을 살펴본다.

• Journal of the Korea Society of Computer and Information
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• v.25 no.7
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• pp.85-92
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• 2020

Following the development of Internet of Things (IoT) technology, the scope of application of IoT technology is expanding to industrial safety areas that detect and prevent possible risks in outdoor environments in advance, away from improving the convenience of living in indoor environments. Although this expansion of IoT service provides many advantages, it also causes security problems such as data leakage and modulation, so research on security response strategies is being actively carried out. In this paper, the IoT-based road construction risk management system in outdoor environment is proposed as a research subject. As a result of investigating the security vulnerabilities of the low-power wide-area (LPWA, BLE) communication protocol applied to the research targets, the security vulnerabilities were identified in terms of confidentiality, integrity, and availability, which are the three major elements of information security, and countermeasures for each vulnerability were proposed. This study is meaningful in investigating and analyzing possible vulnerabilities in the operation of the IoT-based risk management system and proposing practical security guidelines for each vulnerability.

• Smart Media Journal
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• v.10 no.2
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• pp.84-91
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• 2021

In the EU GDPR, when collecting personal information, the right of the information subject(user) to consent or refuse is given the highest priority. Therefore, the information subject must be able to withdraw consent and be forgotten and claim the right at any time. Especially, restricted IoT devices(Constrained Node) implement the function of consent of the data subject regarding the collection and processing of privacy data, and it is very difficult to post the utilization content of the collected information. In this paper, we designed and implemented a management system that allows data subjects to monitor data collected and processed from IoT devices, recognize information leakage problems, connect, and control devices. Taking into account the common information of the standard OCF(Open Connectivity Foundation) of IoT devices and AllJoyn, a device connection framework, 10 meta-data for information protection were defined, and this was named DPD (Data Protection Descriptor). we developed DPM (Data Protection Manager), a software that allows information subjects to manage information based on DPD.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.31 no.1
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• pp.31-49
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• 2021

IoT devices refer to embedded devices that can communicate with networks. Since there are various types of IoT devices and they are widely used around us, in the event of an attack, damages such as personal information leakage can occur depending on the type of device. While the security team analyzes IoT devices, they should target firmware as well as software interfaces since IoT devices are operated by both of them. However, the problem is that it is not easy to extract and analyze firmware and that it is not easy to manage product quality at a certain level even if the same target is analyzed according to the analyst's expertise within the security team. Therefore, in this paper, we intend to establish a vulnerability analysis process for the firmware of IoT devices and present available tools for each step. Besides, we organized the process from firmware acquisition to analysis of IoT devices produced by various commercial manufacturers, and we wanted to prove their validity by applying it directly to drone analysis by various manufacturers.