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Short bio
Short bio
This is Sangwook Bae, a security researcher who cares about the security and privacy issues in the cellular network. I am broadly interested in network systems and security, with an emphasis on building a privacy-preserving cellular network and a securely implemented-/designed-network. I obtained my PhD degree in Electrical Engineering from KAIST in 2022. I received BS and MS degrees in EECS at KAIST in 2013 and 2015, respectively. [CV]
Publications
Publications
“Enabling Physical Localization of Uncooperative Cellular Devices"
Taekkyung Oh, Sangwook Bae, Junho Ahn, Yonghwa Lee, Tuan Dinh Hoang, Min Suk Kang, Nils Ole Tippenhauer, Yongdae Kim. In Proceedings of the 30th Annual International Conference on Mobile Computing and Networking (Mobicom'24), Washington, D.C., Nov 2024
“LTESniffer: An Open-source LTE Downlink/Uplink Eavesdropper"
Dinh Tuanm Hoang, CheolJun Park, Mincheol Son, Taekkyung Oh, Sangwook Bae, Junho Ahn, BeomSeok Oh, and Yongdae, Kim, In Proceedings of the ACM Conference on Security and Privacy in Wireless and Mobile Networks (WiSec '23) [Github]
“Preventing SIM Box Fraud Using Device Fingerprinting"
BeomSeok Oh*, Junho Ahn*, Sangwook Bae, Mincheol Son, Yonghwa Lee, Min Suk Kang, and Yongdae Kim, In Proceedings of the Network and Distributed System Security Symposium (NDSS '23), San Diego, CA, February 2023 [paper]
"Watching the Watchers: Practical Video Identification Attack in LTE Networks"
Sangwook Bae, Mincheol Son, Dongkwan Kim, CheolJun Park, Jiho Lee, Sooel Son, and Yongdae Kim, USENIX Conference on Security Symposium. (USENIX Security 2022) [paper]
"DoLTEst: In-depth Downlink Negative Testing Framework for LTE Devices"
CheolJun Park*, Sangwook Bae* (co-first), BeomSeok Oh, Jiho Lee, Eunkyu Lee, Insu Yun, and Yongdae Kim, USENIX Conference on Security Symposium. (USENIX Security 2022) [paper]
"Hiding in Plain Signal: Physical Signal Overshadowing Attack on LTE"
Hojoon Yang, Sangwook Bae, Mincheol Son, Hongil Kim, Songmin Kim, and Yongdae Kim, USENIX Conference on Security Symposium. (USENIX Security 2019)
"Hidden Figures: Comparative Latency Analysis of Cellular Networks with Fine-grained State Machine Models"
Sangwook Bae, Mincheol Son, Sooel Son, Yongdae Kim, ACM International Workshop on Mobile Computing Systems and Applications (ACM HotMobile '19) , Santa Cruz, CA, Februaray 2019
“GUTI Reallocation Demystified: Cellular Location Tracking with Changing Temporary Identifier"
Byeongdo Hong, Sangwook Bae, and Yongdae Kim, In Proceedings of the Network and Distributed System Security Symposium (NDSS '18), San Diego, CA, February 2018
“Why is HTTP Adaptive Streaming So Hard?
Sangwook Bae, Dahyun Jang and KyoungSoo Park, In Proceedings of ACM Asia-Pacific Workshop on Systems (ACM APSys '15), Tokyo, Japan, July 2015 [pdf]
"A Case for Caching Middleboxes for Scalable MMT Video Delivery"
Sangwook Bae, Giyoung Nam and KyoungSoo Park, In Proceedings of the IEEE International Conference on Multimedia & Expo (IEEE ICME '15) Industry Forum Track, Turin, Italy, June 2015 [pdf]
“Effective Content-based Video Caching with Cache-friendly Encoding And Media-aware Chunking"
Sangwook Bae, Giyoung Nam and KyoungSoo Park, In Proceedings of the ACM Multimedia Systems conference (ACM MMSys '14), Singapore, March 2014 [pdf]
Invited Talks
Invited Talks
Network-level Fingerprinting of Cellular Devices such as SIMBOX
Security @ KAIST, 2021 [link] (Korean)
Finding vulnerabilities in Cellular devices using open source SW
Samsung Electronics Mobile Division, 2019
Cache-friendly encoding and media-aware chunking
A3 Foresight Program: Workshop on Next Generation Networks and Network Security - Gyeongju, Korea, 2014 [Best presentation awards]
Awards
Awards
CVD-2023-0077 GSMA Mobile Security Research Acknowledgements (previously known as GSMA Mobile Security Hall of Fame)
CVD-2023-0070, GSMA Mobile Security Research Acknowledgements (previously known as GSMA Mobile Security Hall of Fame)
Best paper award, Conference on Information Security and Cryptography, 2021
First prize, KIISC-KAIS Research Paper Competition, 2021
Best paper award (ETRI President), Conference on Information Security and Cryptography, 2020
Best paper award (NSR Director), Conference on Information Security and Cryptograph, 2020
Grand prize, KIISC-KAIS Research Paper Competition, 2019
Best presentation award, A3 Foresight workshop, 2014
Standards Activities
Standards Activities
ISO/IEC JTC1/SC29/WG11 (MPEG)
ISO/IEC JTC1/SC29/WG11 (MPEG)
"Design of an MMT caching middlebox for effective bandwidth utilization",
Sangwook Bae, Giyoung Nam and KyoungSoo Park, MPEG 109 meeting, Sapporo, Japan, 2014.
"Proposal of additional identifier box and MPU ID generation rules for MMT caching middlebox",
Sangwook Bae and KyoungSoo Park. MPEG 113 meeting, Geneva, Switzerland, 2015.
"Session control messages for MMT caching middlebox",
Sangwook Bae and KyoungSoo Park, MPEG 113 meeting, Geneva, Switzerland, 2015.
"Generalized HTTP custom header format for MMT caching middlebox",
Sangwook Bae and KyoungSoo Park, MPEG 113 meeting, Geneva, Switzerland, 2015.
"Advanced MMT adaptation logic with fine-grained media information for live streaming",
Sangwook Bae, Kyuho Son, and KyoungSoo Park, MPEG 116 meeting, Chengdu, China, 2016.
"Update of MMT ADC message for advanced adaptation logic in MANE",
Sangwook Bae, Kyuho Son, and KyoungSoo Park, MPEG 116 meeting, Chengdu, China, 2016.
Contact Info
Contact Info
baesangwook89@gmail.com
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