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 security and reliability.

My PhD examines the boundary between high-level languages (e.g., Python, JavaScript) and compiled languages (e.g., C/C++, Rust), including how vulnerabilities and bloat cross language ecosystems. I also work on LLMs for security and the security of LLMs. Other interests include GPU sharing for ML workloads and the reliability of Infrastructure-as-Code.

news

Oct 21, 2026 Our paper “When AI Agrees Too Much: Manipulating Automated Code Review via Bias Injection” has been accepted at ICSE ‘27.
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.

selected publications (see all)

  1. ICSE’27
    When AI Agrees Too Much: Manipulating Automated Code Review via Bias Injection
    Georgios Alexopoulos* , Nikolaos Alexopoulos* , Diomidis Spinellis , and Dimitris Mitropoulos
    In Proceedings of the 49th International Conference on Software Engineering, 2027
    * Both authors contributed equally
    PDF
  2. 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
  3. 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
  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)