• The Journal of the Korea Contents Association
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• v.16 no.2
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• pp.243-250
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• 2016

Recently, with the rise of the mobile device, from mobile devices the user who owns the security, speed up the implementation of the guarantee management environment as businesses and individual equipment for the effcient management of the existing system, but the introduction of the MDM MDM App management features administrators to register the App until you can't prvent the security threat. Therefore, this paper addresses these issues in order to improve the security of your application for the control system. The proposed system is a function of the MDM authentication technology to design analysis, and system architecture to help prevent information disclosure within the design and implementation of Mobile-based application control system. Implementation of the control system to assess the security of the international common criteria security evaluation complete the test scenarios on the basis of the test items. An average of 40% of the test results to verify the results of this enhanced security.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.11
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• pp.148-154
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• 2016

Video security has recently emerged as an important issue owing to CCTV video image spill accidents over the Internet. KISA recommends the use of encryption protocols for remote access through its guidelines for CCTV personal video information protection. But still, many products do not adhere to the guidelines, and those products are easily exposed to security threats, such as hacking. To solve these security vulnerabilities, this paper proposes a CCTV system that connects from remote locations, and is implemented by using secure shell (SSH) tunneling techniques. The system enhances security by transmitting encrypted data by using SSH. By using the tunneling technique, it also solves the problem of not being able to access a CCTV recorder located inside a firewall. For evaluation of the system, this paper compares various CCTV remote access schemes and security. Experimental results on the effectiveness of the system show it is possible to obtain remote access without a significant difference in transmission quality and time. Applying the method proposed in this paper, you can configure a system secure from the threats of hacking.

• Convergence Security Journal
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• v.15 no.4
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• pp.73-82
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• 2015

Thanks to popularization of smart phone, mobile payment market is growing rapidly. As the obligatory use of digital certificate is abolished, easy-to-use payment that can settle with only password is being launched one after another. But its spreading speed is not fast highly. Because of concern about personal information leakage and security, unchangeability of payment habit, insufficiency of consumer protection, inadequacy of payment infrastructure and all sorts of regulations, easy-to-use payment is not activated. Recently global IT companys are entering mobile payment market competitively. It is because the sense of crisis that their survival can be dangerous from now on if they get left behind Fintech innovation and the mentality that they try to take the leadership of mobile payment market process. In this situation, the thorough preparation and a lot of effort are required to promote our autonomous easy-to-use payment growth without dependance on foreign country's. In this paper, the problems of local mobile easy-to-use payment are addressed in depth and the activation measures such as flexible and discriminative security, construction of customer protection system, law system maintenance, service differentiation are proposed.

• Journal of Digital Contents Society
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• v.19 no.1
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• pp.193-198
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• 2018

In Korea, the penetration rate of Internet, telephone and smart devices is reaching the highest level in the world. Cyber financial crimes that exploit such infrastructures continue to evolve. Since the first Voice Phishing crime in May 2006, ten years later, there has been a constant occurrence of Voice Phishing crime. Voice Phishing is a crime in which a victim is phoned for false information to figure out the victim's account number and password. This method of Voice Phishing evolves day by day, and it is difficult to investigate. Most of Voice Phishing is a form of international organized crime that is based in Southeast Asia such as China, and it is not easy to eradicate by international cooperation investigation. The purpose of this study is to investigate the actual situation and case analysis of Voice Phishing crime, and to propose the countermeasures against police Voice Phishing counterplan.

• The Journal of the Korea Contents Association
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• v.21 no.6
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• pp.51-61
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• 2021

In the era of the 4th industrial revolution symbolized by the Internet of Things, big data and artificial intelligence, various embedded devices are increasing exponentially. These devices have communication functions despite their low specifications, so the possibility of personal information leakage is increasing, and security threats are also increasing. Embedded devices can have security issues at most levels, from hardware to services over the network. In addition, it is difficult to apply general security techniques because it has characteristics of resource constraints such as low specifications and low power, and the related technology has not been standardized. In this study, we present vulnerabilities and possible problems and considerations in applying SDN to embedded devices in consideration of structural characteristics and real-world discovered cases. This study presents vulnerabilities and possible problems and considerations when applying SDN to embedded devices. From a hardware perspective, we consider the problems of Wi-Fi chips and Bluetooth, the problems of open flow implementation, SDN controllers, and examples of structural properties. SDN separates the data plane and the control plane, and provides a standardized interface between the two, enabling efficient communication control. It can respond to the security limitations of existing network technologies that are difficult to respond to rapid changes.

• Convergence Security Journal
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• v.22 no.4
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• pp.99-107
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• 2022

The use of smart home appliances and Internet of Things (IoT) devices is growing, enabling new interactions and automation in the home. This technology relies heavily on mobile services which leaves it vulnerable to the increasing threat of hacking, identity theft, information leakage, serious infringement of personal privacy, abnormal access, and erroneous operation. Confirming or proving such security breaches have occurred is also currently insufficient. Furthermore, due to the restricted nature of IoT devices, such as their specifications and operating environments, it is difficult to provide the same level of internet security as personal computers. Therefore, to increase the security on smart home IoT devices, attention is needed on (1) preventing hacking and user authority theft; (2) disabling abnormal manipulation; and (3) strengthening audit records for device operation. In response to this, we present a plan to build a cloud security authentication platform which features security authentication management functionality between mobile terminals and IoT devices.

• The KIPS Transactions:PartB
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• v.18B no.5
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• pp.315-324
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• 2011

In Web environment, a flood of spam causes serious social problems such as personal information leak, monetary loss from fishing and distribution of harmful contents. Moreover, types and techniques of spam distribution which must be controlled are varying as days go by. The learning based spam classification method using Bag-of-Words model is the most widely used method until now. However, this method is vulnerable to anti-spam avoidance techniques, which recent spams commonly have, because it classifies spam documents utilizing only keyword occurrence information from classification model training process. In this paper, we propose a spam document detection method using a characteristic of repeating words occurring in spam documents as a solution of anti-spam avoidance techniques. Recently, most spam documents have a trend of repeating key phrases that are designed to spread, and this trend can be used as a measure in classifying spam documents. In this paper, we define six variables, which represent a characteristic of word repetition, and use those variables as a feature set for constructing a classification model. The effectiveness of proposed method is evaluated by an experiment with blog posts and E-mail data. The result of experiment shows that the proposed method outperforms other approaches.

• The Journal of Korean Association of Computer Education
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• v.23 no.1
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• pp.63-75
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• 2020

From the perspective of compliance with security policies by members of the organization, which is a major cause of security incidents, this study presented biased thinking as factors that affect compliance with security policies and verified the following: First, the impact of biased thinking on security policies on compliance with security policies is verified. Second, the participation of management, perceived risk, education and punishment of management will verify the adjustment effect of increasing or decreasing biased thinking. Finally, we have verified that compliance attitudes have a significant impact on compliance behavior. To this end, 157 people were surveyed, statistical analysis of research models and structural equations, and conformity analysis were conducted. Studies have shown that biased thinking has a negative effect on the attitude of compliance with information security. In addition, it was analyzed that the attitude of compliance with information security policy increases policy compliance behavior. On the other hand, the higher the perceived risk of information security, the lower the bias was the adjustment effect, but management's participation, education and punishment were found to have no adjustment effect.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.40 no.8
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• pp.1551-1559
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• 2015

Recently, the performance of smart devices is almost similar to that of the existing PCs, thus the users of smart devices can perform similar works such as messengers, SNSs(Social Network Services), smart banking, etc. originally performed in PC environment using smart devices. Although the development of smart devices has led to positive impacts, it has caused negative changes such as an increase in security threat aimed at mobile environment. Specifically, the threats of mobile devices, such as leaking private information, generating unfair billing and performing DDoS(Distributed Denial of Service) attacks has continuously increased. Over 80% of the mobile devices use android platform, thus, the number of damage caused by mobile malware in android platform is also increasing. In this paper, we propose android based malware detection mechanism using time-series analysis, which is one of statistical-based detection methods.We use auto-regressive moving-average model which is extracting accurate predictive values based on existing data among time-series model. We also use fast and exact malware detection method by extracting possible malware data through Z-Score. We validate the proposed methods through the experiment results.

• Korean Journal of Environmental Biology
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• v.38 no.1
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• pp.165-178
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• 2020

This study investigated the exotic mammals introduced to Korea to present the basic data necessary for ecological risk assessment and the establishment of an alien species management database. For this purpose, a list of alien mammals introduced to Korea was established by investigating alien mammals introduced for zoo exhibits purposes, alien mammals in breeding environments traded between individuals, and alien mammals introduced into nature. A total of 163 taxa were identified as alien mammals introduced to Korea. There were 139 taxonomic groups of ornamental alien mammals, including 11 orders, 44 families, 129 species and 10 subspecies; 28 taxonomic groups of alien mammals traded between individuals, including five orders and 19 families; and eight taxonomic groups of alien mammals introduced into nature, including four orders, seven families, seven species, and one subspecies. For the effective management of alien mammals introduced to Korea, it is important to collect basic information, such as a list of all species introduced, their populations, and introduced areas. It is also necessary to apply proactive management policies according to the degree of potential risk by preemptively evaluating the ecological risks that may arise from the introduction of alien species into natural ecosystems. For the eight taxonomic groups of Capra hircus, Cervus nippon taiouanus, Felis catus, Myocastor coypus, Oryctolagus cuniculus, Ondatra zibethicus, Ovis aries, and Rattus norvegicus identified to be introduced into the natural ecosystem of Korea, the provision of proliferation control measures at the national level, continuous monitoring of changes in diffusion trends, and immediate response based on the degree of change are required.