Nassos Galiopoulos

Research

Ph.D. candidate in Cybersecurity and AI at The University of Texas at San Antonio.

Areas of focus

Evidence-grounded attack attribution
Mapping system telemetry to MITRE ATT&CK techniques, and separating what evidence was available, what was retrieved, and what the system committed to.
Temporal knowledge graphs for threat intelligence
Linking events, entities, and techniques over time so that attributions can be traced back to their evidence.
Commitment across the delegation chain
How one system’s decision to commit or withhold shapes the judgment of the next agent downstream.
Bounded autonomy for AI agents
As autonomous as possible, as bounded as necessary.
LLM-enabled phishing
How large language models change phishing inside large organizations, and how to defend against it.

Publications

  1. Lateral phishing with large language models: A large organization comparative study

    Bethany, M., Galiopoulos, A., Bethany, E., Karkevandi, M. B., Beebe, N., Vishwamitra, N., & Najafirad, P.

    IEEE Access 13, 60684–60701, 2025 · DOI · arXiv (free)

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