• Journal of KIISE
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• v.41 no.12
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• pp.1035-1049
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• 2014

This paper presents a new method to detect attack patterns in security-critical systems, based on a new notion of Behavior Ontology. Generally security-critical systems are large and complex, and they are subject to be attacked in every possible way. Therefore it is very complicated to detect various attacks through a semantic structure designed to detect such attacks. This paper handles the complication with Behavior Ontology, where patterns of attacks in the systems are defined as a sequences of actions on the class ontology of the systems. We define the patterns of attacks as sequences of actions, and the attack patterns can then be abstracted in a hierarchical order, forming a lattice, based on the inclusion relations. Once the behavior ontology for the attack patterns is defined, the attacks in the target systems can be detected both semantically and hierarchically in the ontology structure. When compared to other attack models, the behavior ontology analysis proposed in this paper is found to be very effective and efficient in terms of time and space.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.04a
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• pp.452-455
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• 2015

허니넷이란 공격자에게 인위적으로 침해된 후 공격자의 행동을 관찰할 수 있는 정보보호 체계 중 하나로 사전에 취약한 자원을 준비하여 공격자가 외부에서 접근할 수 있도록 구축하는 것이 일반적이다. 하지만 최근 사이버 공격은 외부에서 발생하기보다는 내부에 좀비PC를 만든 후 내부 경유지로 활용하여 공격하는 것이 추세이다. 따라서 기존 허니넷으로는 내부 경유지를 활용한 공격에 적극적으로 대응할 수 없는 것이 현실이다. '11년 농협 전산망 마비 사태의 경우 유지보수 업체의 PC가 내부 경유지로 활용되어 기업 내부망에 침입한 사례로 공격자는 내부 스캔을 통해 주요 자원을 식별하여 사이버 공격을 수행하였다. 이처럼 내부 경유지를 활용한 공격의 시작점은 내부 스캔단계로 사전에 이를 식별할 수 있다면 많은 피해를 사전에 예방할 수 있을 것이다. 이에 본 논문에서는 내부 스캔공격을 식별할 수 있는 Simple 허니팟을 구현하고 이를 활용한 분산 허니넷을 구축하여 내부공격에 대한 효과적인 대응방안에 대하여 제안하고자 한다.

• Journal of Music and Human Behavior
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• v.5 no.2
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• pp.17-39
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• 2008

This study aims to decrease aggressiveness and anger of neglected children through anger-control music program. In this study, 4 neglected children were provided with 15 anger-control music programs for 30 minutes twice a week. Based on anger-control program, song writing and music therapy such as playing musical instruments were applied to the children according to the objective of each stage of the program. The changes in aggressiveness and anger were measured, and the behaviors of the participants during the musical activity were analysed. According to the analysis of the data, the anger-control music program proved to be effective in reducing aggressiveness and anger of the neglected children. What this result means is that the neglected children, who lack social skills and confidence, are able to express their emotions without difficulty and anxiety by playing musical instruments and singing songs.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.11a
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• pp.1071-1074
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• 2005

본 논문에서는 침입탐지 도구에서 침입에 대한 대응을 능동적으로 할 수 있도록 하기 위한 공격대응 방법론을 연구하였다. 공격 대응 방법론을 도출하기 위해, NIDS에서 대표적인 공격 유형인 삽입공격, 회피공격, 서비스거부공격의 위험성을 분석하였고, 의심되는 공격에 대해 적절한 행동을 적용하기 위한 공격대응 형태와 공격 대응 방법론 및 공격 대응 상태를 연구하였다.

• Journal of Internet Computing and Services
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• v.22 no.3
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• pp.45-52
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• 2021

Although many studies have been conducted to identify unknown attacks in cyber security intrusion detection systems, studies based on outliers are attracting attention. Accordingly, we identify outliers by defining categories for unknown attacks. The unknown attacks were investigated in two categories: first, there are factors that generate variant attacks, and second, studies that classify them into new types. We have conducted outlier studies that can identify similar data, such as variants, in the category of studies that generate variant attacks. The big problem of identifying anomalies in the intrusion detection system is that normal and aggressive behavior share the same space. For this, we applied a technique that can be divided into clear types for normal and attack by discrete wavelet transformation and detected anomalies. As a result, we confirmed that the outliers can be identified through One-Class SVM in the data reconstructed by discrete wavelet transform.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10c
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• pp.475-477
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• 2002

네트워크 상의 사이버 공격에 대한 시뮬레이터 개발을 위해서는 다양한 네트워크 구성요소의 특성을 시뮬레이션 모델에 반영할 수 있어야 하며, 다양한 사이버 공격과 이를 방어하기 위한 보안대책들의 특성을 반영할 수 있어야 한다. 본 논문에서는 네트워크 상의 사이버 공격과 방어를 시뮬레이션 하기 위하여 다양한 공격과 방어기법을 표현하기 위해 공격 및 방어 DB를 설계하고, 시뮬레이션 수행시 행동을 표현할 actor를 설계하고, 이를 이용한 공격 및 방어 시나리오 DB를 설계하고, 이들을 이용한 시나리오 생성기를 설계한다. 본 논문에서 제시한 방법을 이용하여 다양한 네트워크 구조와 보안대책을 가진 네트워크에 대한 사이버 공격 및 방어 시뮬레이션이 가능하며, 이를 통하여 네트워크에 적용된 보안대책의 적절성 파악 및 사이버 공격으로 인한 네트워크의 피해 및 피해영향 파악 등으로 확장이 가능하며, 사이버 공격에 대한 적절한 보안대책을 수립하는데 도움을 줄 수 있다.

• Journal of Digital Convergence
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• v.11 no.12
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• pp.495-505
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• 2013

This study aims to evaluate the effects of aromatherapy and a foot reflex massage program on the cognition, anxiety, aggressive behavior, and wandering behavior of elderly with dementia. The research design was a non-equivalent control group, quasi-experimental study where 43 subjects were divided into two groups. Aromatherapy and foot reflex massage was administered to the experimental group (N=21), and no treatment was administered to the control group (N=22). The data was analyzed using the ${\chi}^2$-test, t-test, while the repeated measures of ANOVA were utilized with the SPSS/Win 18.0 program. The experimental group did not show significant differences in cognitive function; however, it showed significant differences in anxiety, aggressive behavior, and wandering behavior in relation to the control group. Thus this research suggests aromatherapy and a foot reflex massage program as nursing intervention to improve the quality of life of elderly with dementia.

• Journal of the Korean Home Economics Association
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• v.48 no.2
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• pp.13-22
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• 2010

This study explored mediating effects of children's emotional regulation between maternal parenting behaviors and children's aggressive/prosocial behaviors. The participants were 1,187 4th, 5th, 6th grade children and their mothers from two elementary schools in Korea. The Maternal Parenting Behaviors Scale(Kim, 2006), the Emotional Regulation Scale(Lee, 1997), and a peer-nomination measure(Crick, 1995; Crick & Grotpeter, 1995) were used. Collected data were subjected to descriptive statistical analysis, Pearson's productive correlation and regression using SPSS(Ver 12.0). Findings revealed that children's self-emotional regulation mediated the effects of mother's physical punishment on children's aggressive behaviors, while children's other-emotional regulation mediated the effect of mother's warm-encouragement, mediation-supervision, and inconsistency on children's prosocial behaviors. In conclusion, children's emotional regulation mediates the effects of maternal parenting behaviors on children's aggressive/prosocial behaviors.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.16 no.2
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• pp.211-218
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• 2005

Objectives : The purpose of the study was to evaluate the related factors of depression in mothers bringing their offspring for evaluation or treatment of problematic behaviors. Methods : Fifty mothers were recruited through their offspring's evaluation or treatment for offspring's problematic behaviors. Psychological tests battery including Korean Wechsler Adult Intelligence Scale and the Korean Educational Development Institute-Wechsler Intelligence Scale for Children was administered to all mothers and their offspring. Mothers completed Korean version of Child Behavior Checklist (K-CBCL), and teachers completed Teacher's Report Form (TRF). On the basis of the maternal depression, the mothers were divided into two groups. Results : 1) Among the fifty mothers, $42\%$ of the mothers had depressive disorder, $16\%$ had anxiety disorder, and $42\%$ had no psychiatric disorder. 2) Depressed mothers rated significantly higher in aggressive behaviors, externalizing problems of K-CBCL in their children. 3) Children of depressed mothers had lower score in picture arrangement and coding subtests of KEDI-WISC than those of no psychiatric disorder mothers. 4) After controlling for the total problematic behavior scores of TRF, mother's depression is positively correlated with aggressive behaviors, externalizing problems, total problematic behaviors of K-CBCL, and negatively correlated with coding of KEDI-WISC. Conclusion : Children's aggressive behavior, externalizing behavior, total problematic behaviors and low coding score may be associated with mother's depression.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.3
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• pp.628-639
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• 2017

The purpose of this study was to examine the effects of children's daily stress and employed mothers' nurturing attitude on children's problem behavior, as well as the mediating role of employed mothers' nurturing attitude. 160 children (aged 3-6, in city "D") and their mothers participated in this study. The SPSS 18.0 program was used to conduct a regression analysis to examine the correlation between the children's daily stress, their problem behavior and the employed mothers' nurturing attitude, depending on the gender of the children. The results were as follows : First, in the case of the boys, their aggression and attention have effects on their coercive attitude, and their anxiety and depression have effects of decreasing magnitude on their logical attitude, blaming / offensive stress and pride-hurt stress in that order. Secondly, in the case of the girls, their aggression has effects on their coercive attitude, and their attention has effects of decreasing magnitude on their anxiety / frustration stress and coercive logical attitude in that order. On the other hand, their anxiety / depression have effects of decreasing magnitude on their accused/offensive stress and coercive attitude in that order. Third, the employed mothers' nurturing attitude had mediating effects between the children's daily stress and their problem behavior. However, no such mediating effects were observed in the case of the boys. Therefore, the mothers tend to foster complementary and logical parenting, rather than coercive or negligent parenting. It is thought that children need to reduce their stress levels in everyday life (in order to?) reduce their problems.