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公开(公告)号：US11463880B2
公开(公告)日：2022-10-04
申请号：US16716055
申请日：2019-12-16
Inventor： Yongdae Kim , Hongil Kim , Jiho Lee , Eunkyu Lee
IPC: H04W12/108 , H04L69/22 , G06F11/36 , H04W12/106 , H04W12/122 , G06K9/62 , H04B1/00 , H04L9/32
Abstract: A security analysis method for a control plane and a system therefor are disclosed. The method includes generating a test case for a security property unsuitable for a control plane operation, transmitting the generated test case to target equipment and receiving a response of the control plane for the test case from the target equipment, and diagnosing security for the security property of the target equipment by analyzing the received response. The generating includes generating the test case for the security property by modulating a value of a specific field in a control plane protocol header into a value unsuitable for an operation on standards.
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2.发明授权公开(公告)号：US11405787B2
公开(公告)日：2022-08-02
申请号：US17124634
申请日：2020-12-17
Inventor： Yongdae Kim , Hojoon Yang , Sangwook Bae , Mincheol Son , Hongil Kim , Song Min Kim
IPC: H04W12/122 , H04W12/106 , H04L9/40 , H04W56/00 , H04W72/04
Abstract: A physical signal overshadowing attack method for an LTE broadcast message and a system thereof are provided. The method includes identifying physical configuration information of user equipment (UE) which is an attack target and manipulating a physical downlink shared channel (PDSCH), a physical downlink control channel (PDCCH), and a physical control format indicator channel (PCFICH) for subframes of the LTE broadcast message transmitted to the UE to form a subframe for attack, synchronizing a time domain and a frequency domain of the subframe for attack depending on the LTE broadcast message, and injecting the synchronized subframe for attack into legitimate subframes of the LTE broadcast message transmitted to the UE and transmitting the injected subframes.
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公开(公告)号：US10111120B2
公开(公告)日：2018-10-23
申请号：US15432552
申请日：2017-02-14
Inventor： Yongdae Kim , Byeong Do Hong , Sung-Ju Lee , Shinjo Park , Hongil Kim , HyunWook Hong , Dongkwan Kim , Hyunwoo Choi
Abstract: A network anomaly diagnosis device and a method thereof are provided. The network anomaly diagnosis device includes a data analyzer configured to receive a control plane message for a service provided to a terminal by a mobile network operator (MNO) from the terminal and analyze the control plane message, a database configured to collect results of analyzing control plane messages for services provided to the terminal by different MNOs including the MNO from the data analyzer and store the result of analyzing the control plane message for each MNO, and a controller configured to compare the result of analyzing the control plane message of the MNO at the data analyzer with the result of analyzing the control plane message for each MNO, the result being stored in the database.
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公开(公告)号：US11082866B2
公开(公告)日：2021-08-03
申请号：US16726066
申请日：2019-12-23
Inventor： Yongdae Kim , Sangwook Bae , Mincheol Son , Sooel Son
Abstract: Disclosed are an apparatus and method for diagnosing an abnormality of a mobile communication network. The apparatus for diagnosing an abnormality of a mobile communication network includes a modeling unit that models a control plane operation of an analysis target mobile communication network based on a control plane messages collected by a preset Mobile Network Operator to a terminal in a formal model of a form of a state machine, an analysis unit that compares processing required times of a control plane operation model of the modeled analysis target mobile communication network and a control plane operation model of another mobile communication network previously generated in a same path, and a detection unit that detects an abnormal operation of the mobile communication network of the analysis target based on a comparison result.
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公开(公告)号：US20210047034A1
公开(公告)日：2021-02-18
申请号：US16726049
申请日：2019-12-23
Inventor： Yongdae Kim , Juhwan Noh , Yujin Kwon , Hocheol Shin , Dohyun Kim
Abstract: Disclosed are an anti-drone method using a GPS spoofing signal and a system thereof. According to an embodiment of the inventive concept, an anti-drone method may include injecting a GPS spoofing signal to analyze a drone feature of a target drone and hijacking the target drone by injecting a GPS spoofing signal into the target drone based on a drone hijacking strategy corresponding to the analyzed drone feature among predefined drone hijacking strategies. The analyzing of the drone feature may include injecting the GPS spoofing signal to analyze a safety device mechanism (GPS fail-safe) and a path-following algorithm of the target drone.
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Patent Agency Ranking
公开(公告)号：US20200213879A1
公开(公告)日：2020-07-02
申请号：US16726066
申请日：2019-12-23
Inventor： Yongdae Kim , Sangwook Bae , Mincheol Son , Sooel Son
Abstract: Disclosed are an apparatus and method for diagnosing an abnormality of a mobile communication network. The apparatus for diagnosing an abnormality of a mobile communication network includes a modeling unit that models a control plane operation of an analysis target mobile communication network based on a control plane messages collected by a preset Mobile Network Operator to a terminal in a formal model of a form of a state machine, an analysis unit that compares processing required times of a control plane operation model of the modeled analysis target mobile communication network and a control plane operation model of another mobile communication network previously generated in a same path, and a detection unit that detects an abnormal operation of the mobile communication network of the analysis target based on a comparison result.
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7.发明申请公开(公告)号：US20220124673A1
公开(公告)日：2022-04-21
申请号：US17451123
申请日：2021-10-15
Inventor： Yongdae Kim , CheolJun Park , Hojoon Yang , Sangwook Bae , Mincheol Son , Jiho Lee , Hongil Kim
Abstract: A fake base station (FBS) redirection attack method using unicast message injection in a long term evolution (LTE) wireless section and a system thereof are provided. The FBS redirection attack method includes synchronizing with a signal of a commercial base station connected with a target device being an attack target, transmitting an international mobile subscriber identity (IMSI) paging message to the target device using an IMSI of the target deice, and injecting a unicast message including a frequency of an FBS into the target device, before a base station re-access process is completed in the target device which decodes the IMSI paging message.
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8.发明授权公开(公告)号：US12010650B2
公开(公告)日：2024-06-11
申请号：US17451123
申请日：2021-10-15
Inventor： Yongdae Kim , CheolJun Park , Hojoon Yang , Sangwook Bae , Mincheol Son , Jiho Lee , Hongil Kim
CPC classification number: H04W68/02 , H04W56/001
Abstract: A fake base station (FBS) redirection attack method using unicast message injection in a long term evolution (LTE) wireless section and a system thereof are provided. The FBS redirection attack method includes synchronizing with a signal of a commercial base station connected with a target device being an attack target, transmitting an international mobile subscriber identity (IMSI) paging message to the target device using an IMSI of the target deice, and injecting a unicast message including a frequency of an FBS into the target device, before a base station re-access process is completed in the target device which decodes the IMSI paging message.
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公开(公告)号：US20220124504A1
公开(公告)日：2022-04-21
申请号：US17451222
申请日：2021-10-18
Inventor： Yongdae Kim , Hongil Kim , Yeong Bin Hwang
IPC: H04W12/121
Abstract: Disclosed are a method of validating a man-in-the-middle attack on a cellular control plane protocol and a system thereof, which can diagnose the vulnerability of a man-in-the-middle attack in a mobile communication network through automated test execution and security threat detection by generating test cases. The method includes generating a test case defining an operation of the control plane protocol, performing a man-in-the-middle attack scenario by the test case in conjunction with mobile communication equipment and user equipment by using the test case, and determining whether there is a security threat to the user equipment or a network by analyzing a control plane message generated by performing the scenario of the test case.
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公开(公告)号：US12025713B2
公开(公告)日：2024-07-02
申请号：US16983889
申请日：2020-08-03
Inventor： Yongdae Kim , Juhwan Noh , Jaehoon Kim , Dohyun Kim , Song Min Kim
CPC classification number: G01S19/215 , G01S19/37 , G06N20/00
Abstract: A method for detecting a GPS spoofing attack using a difference between output values of a GPS receiver, which is generated due to inaccuracy of a GPS spoofer, and an apparatus therefor are provided. The method includes receiving a GPS signal; and determining the received GPS signal as a GPS satellite signal or a GPS spoofing signal using a learning model learned based on a difference between output values of a GPS receiver. The method further includes labeling and collecting dispersion degree data including a position, a speed, and a time output from the GPS receiver with whether the GPS signal is the GPS satellite signal or the GPS spoofing signal and modeling the learning model using the collected data.
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