• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.326-329
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• 2017

We argue that the one potential solution is creating a drone or quadcopter that could be used to detect the network hacking attempts and even have the capability to disconnect illegal drones from their user's jamming signals, or de-authenticate them from networks. This could be used as a direct countermeasure, or would at least provide monitoring capacities, for these criminally-purposed drones. In this paper, we focus on implementing the device that can detect intrusion.

• Proceedings of the Korea Contents Association Conference
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• 2005.05a
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• pp.87-90
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• 2005

The rapid development of computing and network environment has brought about the potential vulnerability. Therefore the damage from this vulnerability like Worm, hacking increases continually. In order to resolve this problem, implement the analysis system for mischievous traffic for defending new types of attack and analyzing the traffic takes a real-time action against intrusion and harmful information packet.

• Proceedings of the Korea Contents Association Conference
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• 2005.11a
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• pp.189-194
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• 2005

Present hacking technology is undergone a change on the distributed DoS Attack which cause a lot of traffic to the network or single host. In this paper, with giving mobility to the mean deviation per protocol and it's field, and with adapting pattern matching approach to DDoS attack detection technique, we propose a method to detect the DDoS attack, to have less misdetection and to detect these attacks correctly.

• Journal of Korea Society of Digital Industry and Information Management
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• v.8 no.3
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• pp.147-156
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• 2012

Most people in our society use credit card instead of cash or check, so credit card is very important economic method. Credit card supposed to be safe, but hackers hack credit card for illegal deal. Also hackers make fake credit card and issue fake credit card to other people. In this thesis it will study and analyze damage case for safe credit card deal. It will use safe credit card system to insert variety of information and data of using pattern in artificial intelligence network, so print out the possibility of risk and monitor the risk of credit card user's deal pattern, so if one of user's pattern is different than normal pattern, it will pop up message in consultant's screen. This thesis will study and suggest way of prevent from illegal deal and user friendly credit card checking system.

• Electronics and Telecommunications Trends
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• v.36 no.5
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• pp.21-31
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• 2021

Ransomware attacks, such as Conti, Ryuk, Petya, and Sodinokibi, that target medical institutions are increasing rapidly. In 2020, in the United States., ransomware attacks affected over 600 separate clinics, hospitals, and organizations, and more than 18 million patient records. The cost of these attacks is estimated to be almost $21 billion USD. The first death associated with a ransomware attack was reported in 2020 by the University Hospital of Düesseldorf in Germany. In the case of medical institutions, as introduced in the Medjack report issued by TrapX Labs, in many cases, attackers target medical devices that are relatively insecure and then penetrate deep into more critical network infrastructure, such as EMR servers. This paper introduces security vulnerabilities of hospital medical devices, considerations for ransomware response by medical institutions, and related technology trends.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.11 no.6
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• pp.93-106
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• 2011

In this paper we describe an efficient and easy to use internet stopper, which is called AINS (Automatic Internet Stopper), which uses ARP spoofing scheme. Instead of forwarding packets to router for the case of hacking, in ARP spoofing, the AINS ignores all the packets so that internet stopping operates. The AINS program needs to be installed only in manager computer that does not require additional agent program. In addition to setting manually the stopping computer list, it is able to indentify network nodes automatically by analyzing broadcasting packets. The experimental results show that less than 4 secs for spoofing interval is enough for blocking internet usage regardless the number of computers and therefore network overhead is negligible. The AINS can indentify and control network nodes not only on same subnet but also on different subnet only if they are connected onto same ethernet switch physically. It is being used for an efficient tool for controling internet usage of university computer laboratory and also for an efficient network management.

• The Journal of the Korea Contents Association
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• v.10 no.3
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• pp.101-112
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• 2010

The recent trend of the hacking deals with all the IT infrastructure related to the profit of the companies. Presently, they attack the service itself, the source of the profit, while they tried to access to the service infrastructure through the non-service port in the past. Although they affect the service directly, it is difficult to block them with the old security solution or the old system and they threaten more and more companies with the demand of money menacing the protection of customers and the sustainable management. This paper aims to design and implement multi-platform network packet scanner targeting the exception handling network intrusion detection system which determines normal, abnormal by traffic. Linux and unix have the various network intrusion detection and packet management tools like ngrep, snort, TCPdump, but most of them are based on CUI (Character based User Interface) giving users discomfort who are not used to it. The proposed system is implemented based on GUI(Graphical User Interface) to support the intuitive and easy-to-use interface to users, and using Qt(c++) language that supports multi-platform to run on any operating system.

• Journal of KIISE:Information Networking
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• v.32 no.1
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• pp.1-11
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• 2005

Internet has become an essential part of our daily lives. Many of the day to day activities can already be carried out over Internet, and its convenience has greatly increased the number of Internet users. Hut as Internet gains its popularity, the illicit incidents over Internet has also proliferated. The intruder trace-back technology is the one that enables real time tracking the position of the hacker who attempts to invade the system through the various bypass routes. In this paper, the RTS algorithm which is the TCP connection trace-back system using the watermarking technology on Internet is proposed. Furthermore, the trace-bark elements are modeled by analyzing the Proposed trace-back algorithm, and the results of the simulation under the virtual topology network using ns-2, the network simulation tool are presented.

• Journal of the Korea Society of Computer and Information
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• v.12 no.3
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• pp.185-194
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• 2007

WiBro has become intentionally standardize as IEEE 802.16e. This WiBro service has been started by a portable internet at home as well as abroad. In this paper, an offender hacker do not direct attack on system on system that It marched an attack directly in damage system because a place oneself in mobile station of portable internet WiBro and avoid to attack hacker's system. At this time, a mobile make use of network inspection policy for back-tracking based on log data. Used network log audit, and presented TCP/IP bases at log bases as used algorithm, the SWT technique that used Thumbprint Algorithm. Timing based Algorithm, TCP Sequence number. Study of this paper applies algorithm to have been progressed more that have a speed to be fast so that is physical logical complexity of configuration of present Internet network supplements a large disadvantage, and confirm an effective back-tracking system. result of research of this paper contribute to realize a back-tracking technique in ubiquitous in WiBro internet network.

• Journal of Digital Convergence
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• v.16 no.1
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• pp.271-279
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• 2018

Various technologies have been developed to more efficiently share content such as P2P and CDN. These technologies take a common approach that request packets are responded by distributed network nodes, not by a single distributor. Such approaches not only resolve network congestion around content distributors, but also make it possible to distribute content regardless of the system and network status of content distributors. However, when receiving content from distributed nodes/hosts, not from authenticated distributors, users cannot practically identify which node/host sent content to them. Due to this characteristic, various hacking caused by the malicious modification of content is possible. Therefore, to make such approaches more secure, a content authentication technique is required. In this paper, we propose a improved operation of MHT used in CCN for authenticating distributed content. Then we evaluate the proposed method by comparing its performance with the existing technology.