公开(公告)号：US20210185537A1

公开(公告)日：2021-06-17

申请号：US17124634

申请日：2020-12-17

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Yongdae KIM ,  Hojoon YANG ,  Sangwook BAE ,  Mincheol SON ,  Hongil KIM ,  Song Min KIM

IPC: H04W12/122 ,  H04W12/106 ,  H04W72/04 ,  H04W56/00 ,  H04L29/06

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.

公开(公告)号：US20200213854A1

公开(公告)日：2020-07-02

申请号：US16716055

申请日：2019-12-16

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Yongdae KIM ,  Hongil KIM ,  Jiho LEE ,  Eunkyu LEE

IPC: H04W12/10 ,  H04L29/06 ,  G06F11/36 ,  H04L9/32 ,  G06K9/62 ,  H04B1/00 ,  H04W12/12

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.

公开(公告)号：US20180199219A1

公开(公告)日：2018-07-12

申请号：US15432552

申请日：2017-02-14

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Yongdae KIM ,  Byeong Do HONG ,  Sung-Ju LEE ,  Shinjo PARK ,  Hongil KIM ,  HyunWook HONG ,  Dongkwan KIM ,  Hyunwoo CHOI

IPC: H04W24/08 ,  H04L12/26

CPC classification number: H04W24/08 ,  H04L43/0823

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.