Georgios Alexopoulos

PhD Candidate, Department of Business Administration, University of Athens, Greece

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I am a doctoral candidate at the Department of Business Administration of the University of Athens, under the supervision of Associate Professor Dimitris Mitropoulos. I also work as a Systems Architect at the Greek National Infrastructures for Research and Technology (GRNET). Before joining the University of Athens, and after finishing my undergraduate studies in Electrical and Computer Engineering at NTUA, I was a Systems/Software Engineer at Arrikto, where I focused on ML systems.

You can find a short CV here.

My research lies at the intersection of systems and software, with a focus on improving the security and reliability of computer systems.

I’m currently scrutinizing the boundary between scripting languages (e.g., Python, JavaScript) and compiled languages (e.g., C/C++, Rust).

On the side, I’m also trying to improve the reliability of Infrastructure-as-Code (IaC) software.

news

Feb 22, 2026 I received the Outstanding Doctoral Research Award for 2026 from the Department of Business Administration at the National and Kapodistrian University of Athens.
Dec 22, 2025 Our paper Unfulfilled Promises: LLM-Based Detection of OS Compatibility Issues in Infrastructure as Code has been accepted to FSE 2026.
Sep 10, 2025 Our paper “Best of Both Worlds: Effective Foreign Bridge Identification in V8 Embedders for Security Analysis” has been accepted at IEEE S&P 2026.
Sep 10, 2025 Our demonstration paper “Pytrim: A Practical Tool for Reducing Python Dependency Bloat” has been accepted at ASE 2025.
Jun 23, 2025 Our paper “PyXray: Practical Cross-Language Call Graph Construction through Object Layout Analysis” has been accepted at ICSE 2026.

selected publications (see all)

  1. S&P’26
    Best of both worlds: Effective foreign bridge identification in V8 embedders for security analysis
    Georgios Alexopoulos* , Thodoris Sotiropoulos* , Zhendong Su , and Dimitris Mitropoulos
    In Proceedings of the 47th IEEE Symposium on Security and Privacy (S&P), 2026
    * Both authors contributed equally
    PDF Code
  2. ICSE’26
    PyXray: Practical Cross-Language Call Graph Construction through Object Layout Analysis
    Georgios Alexopoulos , Thodoris Sotiropoulos , Georgios Gousios , Zhendong Su , and Dimitris Mitropoulos
    In Proceedings of the 48th International Conference on Software Engineering, 2026
    PDF Code
  3. arXiv
    Measuring and Exploiting Confirmation Bias in LLM-Assisted Security Code Review
    Dimitris Mitropoulos , Nikolaos Alexopoulos , Georgios Alexopoulos , and Diomidis Spinellis
    arXiv preprint arXiv:2603.18740, 2026
    arXiv
  4. ICSE’24
    nvshare: Practical GPU Sharing without Memory Size Constraints
    Georgios Alexopoulos and Dimitris Mitropoulos
    In IEEE/ACM 46th International Conference on Software Engineering: Companion Proceedings, Lisbon, Portugal, 2024
    PDF Code
  5. FSE’26
    Unfulfilled Promises: LLM-Based Detection of OS Compatibility Issues in Infrastructure as Code
    Georgios-Petros Drosos , Georgios Alexopoulos , Thodoris Sotiropoulos , Dimitris Mitropoulos , and Zhendong Su
    In Proceedings of the ACM on Software Engineering, 2026
    PDF
  6. arXiv
    Cross-Ecosystem Vulnerability Analysis for Python Applications
    Georgios Alexopoulos , Nikolaos Alexopoulos , Thodoris Sotiropoulos , Charalambos Mitropoulos , Zhendong Su , and Dimitris Mitropoulos
    arXiv preprint arXiv:2603.18693, 2026
    arXiv
  7. arXiv
    Reducing Cold-Start Latency in Serverless Applications via Dynamic Slicing
    Georgios Alexopoulos , Konstantinos Karakatsanis , Nikolaos Alexopoulos , Dimitris Mitropoulos , and Thodoris Sotiropoulos
    arXiv preprint arXiv:2609.14040, 2026
    arXiv

PC Member

  • 2023: MSR (Junior PC)