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Securing Modern Cyberspace Using A Multi-Faceted Approach

Li, Yu
http://rave.ohiolink.edu/etdc/view?acc_num=wright1559662803668983

Abstract Details

2019, Doctor of Philosophy (PhD), Wright State University, Computer Science and Engineering PhD.
Security has become one of the most significant concerns for our cyberspace. Securing the cyberspace, however, becomes increasingly challenging. This can be attributed to the rapidly growing diversities and complexity of the modern cyberspace. Specifically, it is not any more dominated by connected personal computers (PCs); instead, it is greatly characterized by cyber-physical systems (CPS), embedded systems, dynamic services, and human-computer interactions. Securing modern cyberspace therefore calls for a multi-faceted approach capable of systematically integrating these emerging characteristics. This dissertation presents our novel and significant solutions towards this direction. Specifically, we have devised automated, systematic security solutions to three critical aspects of our modern cyberspace including i) cyber-physical systems, ii) dynamic web services, and iii) social networks. This dissertation makes the following contributions. First, we have conducted systematic vulnerability assessment for a real-world, complex CPS, namely Unmanned Systems Autonomy Services (UxAS). Our assessment has identified a set of exploitable vulnerabilities. Second, we have designed an adaptive traffic morphing algorithm to conceal CPS communications into background network traffic. Third, we have designed a CPS self-destruct model and studied the security-and-performance trade-off using probabilistic model checking. Fourth, we built a novel detection system to detect PHP-based malicious web shells. Finally, we have designed a novel detection system to detect suspicious behaviors in an online emotional support system.
Junjie Zhang, Ph.D. (Advisor)
Bin Wang, Ph.D. (Committee Member)
Phu H. Phung, Ph.D. (Committee Member)
Michelle Andreen Cheatham, Ph.D. (Committee Member)
172 p.
Computer Engineering
Security; cyber-physical systems; web server; social networks

Recommended Citations

Citations

  • Li, Y. (2019). Securing Modern Cyberspace Using A Multi-Faceted Approach [Doctoral dissertation, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1559662803668983

    APA Style (7th edition)

  • Li, Yu. Securing Modern Cyberspace Using A Multi-Faceted Approach. 2019. Wright State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1559662803668983.

    MLA Style (8th edition)

  • Li, Yu. "Securing Modern Cyberspace Using A Multi-Faceted Approach." Doctoral dissertation, Wright State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=wright1559662803668983

    Chicago Manual of Style (17th edition)

wright1559662803668983
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© 2019, some rights reserved.Creative Commons License Securing Modern Cyberspace Using A Multi-Faceted Approach by Yu Li is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Wright State University and OhioLINK.