• Journal of the Korea Institute of Information and Communication Engineering
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• v.21 no.9
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• pp.1666-1673
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• 2017

Republic of Korea is divided into South Korea and North Korea, creating military conflicts and social conflicts. North Korea is conducting cyberattacks against South Korea and has hacked South Korea's defense network. In the world of cyberspace, the boundaries of the borders are becoming obscured, and cyberattacks and cyberterrorism for cyberwarfare operate with digital computing connected to points, time and space. Agenda and manual are needed for national cybersecurity. Also, it is necessary to study national cybersecurity laws and policies that can create and implement nationalcyber security policy. This paper investigates cyberterrorism situation in North and South Korean confrontation situation and damage to cyberwarfare in the world. We also study cybersecurity activities and cyberwarfare response agendas, manuals and new technologies at home and abroad. And propose national cybersecurity policy and propose policies so that '(tentative) The National Cybersecurity Law' is established. This study will be used as basic data of national cybersecurity law and policy.

• Convergence Security Journal
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• v.20 no.1
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• pp.15-24
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• 2020

Cyber terror and cyberwarfare are no longer virtual, but real, and as an actual security situation, it is necessary to have new understanding through expanding the concept of war to neutralize not only the other country's military command system, but also the country's main functions such as telecommunications, energy, finance, and transport systems, and it also needs to establish the future development strategy of cyber terror response at the national level. Through analysis of cyberwarfare trends in each country and current status of cyberwarfare in Korea, it will systematically explore the demand of new policy based on laws and systems, including the strategies of cyber security technology development, industry promotion, and manpower training and existing information protection policies. through this, it effectively manages a sustainable national crisis, and it suggests to establish a future strategy for the medium and long term cyber security that can effectively and actively respond to cyberwarfare.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.10a
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• pp.165-168
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• 2013

The USA has declared the cyber space as the 5th battlefield following land, sea, air, and space. In contrast to physical wars, in national cyberwarfare differentiation between friend and foe is impossible, and the boundaries between the lines of attack and defense are obscure. Therefore, to perform national cyberwarfare, credibility of all command delivery information performed in the cyber space should be confirmed. In this paper, the authors have determined the commands performed in national cyberwarfare, granted authorized IPv6 in space including the earth, moon and Mars for information credibility, and used LINK joints loaded with stealth functions to secure the credibility of command information.

• Journal of information and communication convergence engineering
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• v.18 no.2
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• pp.94-99
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• 2020

Real cyberterrors are invisible and difficult to identify. Even after a cyberattack, its origin and cause are difficult to determine. Cyberterrorism results in invisible cyberwars, and it is believed that World War IV will begin with a cyberwarfare. For national cybersecurity, information on cybersecurity must be collected, shared, and disseminated. In this study, we investigate a blockchain system designed based on the World Cybersecurity Agreement. National cybersecurity information is linked to the hyperledger blockchain system network through the National Cybersecurity Center. National cybersecurity information designs and uses a secure protocol for protection; further, it is collected, shared, and disseminated to treaty countries. National cybersecurity information is shared and spread by the hyperledger blockchain system, and it uses a cyberdefense system that responds to the cyberattacks and their origin. This paper serves as a policy and legislation guideline for forming a World Cybersecurity Agreement between countries.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.04a
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• pp.635-638
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• 2012

2011년 Stuxnet의 출현을 기점으로 사이버공격이 보다 정밀화 구체화 되고 있으며 사이버전의 주요 무기라 할 수 있는 악성코드들의 특정 국가산업 기관시스템에 대한 직접적이고 지속적인 공격 시도가 예상된다. 본 논문에서는 사이버전의 개념, 악성코드 관련 동향과 공격행위별 감염대상 등을 살펴보고, 국방정보통신망에서 사이버공격에 대비한 악성코드 감염 예방방안을 제안한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.11a
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• pp.1346-1349
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• 2010

본 논문은 국가 정보통신 인프라체계를 대상으로 한 사이버 위협에 대해서 전사적 조기경보체계 구축 방안을 제시하였다. 전사적 조기경보체계는 조기경보시스템을 활용하여 사이버 공격의 징후정보를 초기에 수집, 분석하고 이를 통해 예측할 수 있는 사이버 공격 경로를 사전에 파악하여 공격이 더 이상 진행되지 않고 심각한 피해가 발생하지 않도록 네트워크로 연결된 모든 정보통신체계나 보안 관리자들에게 관련 정보를 신속하게 전파하여 위협을 제거할 수 있도록 하는 체계이다. 국가 정보통신 인프라체계에서 사이버전의 확산과 피해를 줄이기 위해서는 조기경보체계를 국가 기간망 체계와 사이버전의 특성을 고려하여 구축하여야 한다. 본 논문에서는 국가 대상 사이버전이 발생할 경우를 대비하여 조기경보체계 구축 방안을 정책적 및 기술적 측면에서 제시하였다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.25 no.6
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• pp.1571-1582
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• 2015

This paper suggests a methodology for linking technology classification of nongovernmental information security field and technology classification of cyber-warfare in national defense field. Based on this methodology, Multi-Attribute Utility Theory(MAUT) is applied for the purpose of selecting promising nongovernmental technology that is worthy of later introduction or development. After studying the result of the survey regarding the research progression plan of the selected promising technology, the following three facts are discovered: Firstly, the greater the social spillover effect, the greater the need for the government lead R&D. Secondly, among the spillover effects, the social aspect has the highest correlation with respect to the need for the government lead R&D, while the economical aspect and the technological aspect come in the second and the third place, respectively. Finally, according to the correlation analysis, the defense application and the technological importance do not affect the subject of investment or the subject of development. This indicates that even though the R&D for technology with high social spillover effect should be lead by the government, the subject of the investment or the development cannot be determined solely by factors such as military application and technological importance.

• Journal of Internet Computing and Services
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• v.22 no.6
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• pp.33-40
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• 2021

Automatic Speech Recognition(ASR) is a technology that analyzes human speech sound into speech signals and then automatically converts them into character strings that can be understandable by human. Speech recognition technology has evolved from the basic level of recognizing a single word to the advanced level of recognizing sentences consisting of multiple words. In real-time voice conversation, the high recognition rate improves the convenience of natural information delivery and expands the scope of voice-based applications. On the other hand, with the active application of speech recognition technology, concerns about related cyber attacks and threats are also increasing. According to the existing studies, researches on the technology development itself, such as the design of the Automatic Speaker Verification(ASV) technique and improvement of accuracy, are being actively conducted. However, there are not many analysis studies of attacks and threats in depth and variety. In this study, we propose a cyber attack model that bypasses voice authentication by simply manipulating voice frequency and voice speed for AI voice recognition service equipped with automated identification technology and analyze cyber threats by conducting extensive experiments on the automated identification system of commercial smartphones. Through this, we intend to inform the seriousness of the related cyber threats and raise interests in research on effective countermeasures.

• Journal of Internet Computing and Services
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• v.24 no.6
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• pp.119-125
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• 2023

Through the Ukraine-Russia war, the military importance of drones is being reassessed, and North Korea has completed actual verification through a drone provocation towards South Korea at 2022. Furthermore, North Korea is actively integrating artificial intelligence (AI) technology into drones, highlighting the increasing threat posed by drones. In response, the Republic of Korea military has established Drone Operations Command(DOC) and implemented various drone defense systems. However, there is a concern that the efforts to enhance capabilities are disproportionately focused on striking systems, making it challenging to effectively counter swarm drone attacks. Particularly, Air Force bases located adjacent to urban areas face significant limitations in the use of traditional air defense weapons due to concerns about civilian casualties. Therefore, this study proposes a new passive air defense method that aims at disrupting the object detection capabilities of AI models to enhance the survivability of friendly aircraft against the threat posed by AI based swarm drones. Using laser-based adversarial examples, the study seeks to degrade the recognition accuracy of object recognition AI installed on enemy drones. Experimental results using synthetic images and precision-reduced models confirmed that the proposed method decreased the recognition accuracy of object recognition AI, which was initially approximately 95%, to around 0-15% after the application of the proposed method, thereby validating the effectiveness of the proposed method.

• Journal of Information Technology Services
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• v.15 no.1
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• pp.67-79
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• 2016

This study aims to present the necessary elements that should be part of South Korea's National Defense Strategy against the recent North Korean cyber-attacks. The elements proposed in this study also reflect the recent trend of cyber-attack incidents that are happening in the Unites States and other countries and have been classified into the three levels of cyber incidents: cyberwarfare, cyberterrorism and cybercrime. As such, the elements proposed are presented in accordance with this classification system. In order to properly take into account the recent trend of cyber-attacks perpetrated by North Korea, this paper analyzed the characteristics of recent North Korean cyber-attacks as well as the countermeasures and responses of South Korea. Moreover, by making use of case studies of cyber-attack incidents by foreign nations that threaten national security, the response measures at a national level can be deduced and applied as in this study. Thus, the authors of this study hope that the newly proposed elements here within will help to strengthen the level of Korea's cyber security against foreign attacks, specifically that of North Korea such as the KHNP hacking incidents and so on. It is hoped that further damage such as leakage of confidential information, invasion of privacy and physical intimidation can be mitigated.