• Journal of the Korea Institute of Information Security & Cryptology
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• v.20 no.4
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• pp.63-73
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• 2010

Malicious bot programs, the source of distributed denial of service attack, are widespread and the number of PCs which were infected by malicious bot program are increasing geometrically thesedays. The continuous distributed denial of service attacks are happened constantly through these bot PCs and some financial incident cases have found lately. Therefore researches to response distributed denial of service attack are necessary so we propose an effective feature generation method for distributed denial of service attack detection using entropy. In this paper, we apply our method to both the DARPA 2000 datasets and also the distributed denial of service attack datasets that we composed and generated ourself in general university. And then we evaluate how the proposed method is useful through classification using bayesian network classifier.

• Korean Security Journal
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• no.36
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• pp.317-347
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• 2013

This study focuses on the characteristics of terrorist bombing incidents and causal factors on terrorist bombing incidents and number of casualty per incident in Afghanistan though statistical quantitative analysis. For doing so, the bombing data from GTD(Global Terrorism Database) of START program occurred from January 1st 2002 until December 31st 2011 was used. By using descriptive analysis, chi-square, and logistic regression analysis, characteristics of bombing incidents and causal factors on the frequency of incidents and the number of casualty were identified. According to the analysis results, a clear pattern was appeared in terrorist bombing incidents. This result suggests that terrorists rationally and strategically calculate bombing operations and therefore terrorist bombing incidents and number of casualty per incident are conditioned or affected by time, season, Pashtun tribal entity, production level of drugs, the characteristics of targets.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.24 no.5
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• pp.919-929
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• 2014

Recently, organizational efforts to adopt ISMS(Information Security Management System) have been increasingly mandated and demanded due to the rising threat and the heavier cost of security failure. However there is a serious gap between awareness and investment of information security in a company, hence it is very important for the company to control effectively a variety of information security threats within a tight budget. To phase the ISMS, this study suggests the priorities based on evaluating the Importance of 13 areas for the ISMS by the information security experts and then we attempt to see the difference between importance and investment through the assessment of the actual investment in each area. The research findings show that intrusion incident handling is most important and IT disaster recovery is the area that is invested the most. Then, information security areas with the considerable difference between priorities of importance and investment are cryptography control, information security policies, education and training on information security and personnel security. The study results are expected to be used in making a decision for the effective investment of information security when companies with a limited budget are considering to introduce ISMS or operating it.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.25 no.6
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• pp.1607-1620
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• 2015

The server privilege account must be operated through law and regulation. However, due to regulation non-compliance and inadequate operation on financial company server privilege, an incident that every server data being deleted by hacker occur which is later being named as 'NH Bank Cyber Attack'. In this paper, the current operation status on financial company privilege accounts is being analysed to elicit problems and improvement. From the analysis, important evaluation factors will be also selected and applied generating the decision making model for financial company server privilege account operation. The evaluation factor deducted from privilege account status analysis will be used to present and verify the decision making model and formula through AHP(Analytic Hierarchy process).

• Nuclear Engineering and Technology
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• v.53 no.8
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• pp.2445-2453
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• 2021

Since the nuclear data forms a vital component in reactor physics computations, the nuclear community needs processing codes as tools for translating the Evaluated Nuclear Data Files (ENDF) to simulate nuclear-related problems such as an ACE format that is used for MCNP. Errors, inaccuracies or discrepancies in library processing may lead to a calculation that disagrees with the experimentally measured benchmark. This paper provides an overview of the processing and preparation of ENDF/B-VIII.0 incident neutron data with NECP-Atlas and NJOY codes for implementation in the MCNP code. The resulting libraries are statistically inter-compared and tested by conducting benchmark calculations, as the mutualcomparison is a source of strong feedback for further improvements in processing procedures. The database of the benchmark experiments is based on a selection taken from the International Handbook of Evaluated Criticality Safety Benchmark Experiments (ICSBEP handbook) and those proposed by Russell D. Mosteller. In general, there is quite good agreement between the NECP-Atlas1.2 and NJOY21^(1.0.0.json) results with no substantial differences, if the correct input parameters are used.

• Convergence Security Journal
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• v.14 no.4
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• pp.85-94
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• 2014

Information Security Check System was Introduced in 2004, higher than in 2013, the effectiveness of Information Security Management System(ISMS) certification scheme was to unification. This is incident to the Internet affecting people's lives telecommunications service provider to target accountability because, considering the subject's duty selection criteria need to be clarified. however, Obligations under the current legislation, subject selection criteria applying the law itself is ambiguous, the result being a significant problem. Moreover, the regulatory system of certification systems subjects, although selection criteria should be clear and objectively not the obligation not to distrust the system itself and the subject was raised many issues for you. In this study, with SMART Technic in order to improve this certification you can easily determine whether a medical person authorized to develop a model for selection of medical subjects, The developed model is verified through empirical ways to improve the system by presenting the system to help, to secure the effectiveness.

• KIPS Transactions on Computer and Communication Systems
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• v.1 no.3
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• pp.229-242
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• 2012

Although many companies acknowledge the necessity of investment of information security, it is difficult to grasp a tangible effect and to calculate a scale of damage from the security incident. Consequently, companies are under the reality that it is not easy to make an investment decision for information security and to calculate the investment scale. For the investment decision making, although there are several traditional techniques of investment analysis, the investment of information security, comparing to other tangible assets, has limitations in using traditional techniques due to the highly uncertain investment effects. In this study, the traditional technique of investment analysis will be described, and the application method of analytic technique for Real Option, which is developed from the evaluation technique of highly uncertain financial futures and options, will be suggested.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.05a
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• pp.269-273
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• 2010

7.7 DDoS incident due to recent events and the emerging importance of privacy and Privacy laws are being discussed in the National Assembly. In this study, Legislative Assembly Secretariat support organization focused on using the system, such as the Internet network and the administrative, technical and physical security elements on the status of confidentiality, availability, integrity and security criteria to identify and follow and We are analyzing. In addition, the Internet, including network and use the system primarily for use, Legislative support agency, The National Assembly Secretariat staff awareness about information security and privacy on the survey for compliance with codes of conduct and We are analyzing. Through this analysis of legislative support agencies' security status, and social responsibility as an institution will wish to encourage the role.

• KIPS Transactions on Computer and Communication Systems
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• v.4 no.2
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• pp.65-72
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• 2015

According to recent statistics published by the National Industrial Security Center, former and current employees are responsible for 80.4% of companies' technology leakages, and employees of cooperative firms are responsible for another 9.6%. This means that 90% of technology leakages are intentionally or mistakenly caused by insiders. In a recent incident, a credit card company leaked private information, and the person responsible was an employee of a cooperative firm. These types of incidents have an adverse effect not only on a company's assets but also on its reputation. Therefore, most institutions implement various security solutions to prevent information from being leaked. However, security solutions are difficult to analyze and distinguish from one another because their logs are independently operated and managed. A large number of logs are created from various security solutions. This thesis investigates how to prevent internal data leakage by setting up individual scenarios for each security solution, analyzing each scenario's logs, and applying a monitoring system to each scenario.

• Convergence Security Journal
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• v.22 no.2
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• pp.27-42
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• 2022

In the era of the Fourth Industrial Revolution, digital transformation to increase the effectiveness of industry is becoming more important to achieving the goal of industrial innovation. The digital new deal and smart defense are required for digital transformation and utilize artificial intelligence, big data analysis technology, and the Internet of Things. These changes can innovate the industrial fields of national defense, society, and health with new intelligent services by continuously expanding cyberspace. As a result, work productivity, efficiency, convenience, and industrial safety will be strengthened. However, the threat of cyber-attack will also continue to increase due to expansion of the new domain of digital transformation. This paper presents the risk scenarios of cyber-attack threats in the Fourth Industrial Revolution. Further, we propose a preemptive intrusion response model to bolster the complex security environment of the future, which is one of the fundamental alternatives to solving problems relating to cyber-attack. The proposed model can be used as prior research on cyber security strategy and technology development for preemptive response to cyber threats in the future society.