Author

Nikolaos Alexopoulos

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Preprint Sep 2026

Reducing Cold-Start Latency in Serverless Applications via Dynamic Slicing

Across 31 applications on AWS Lambda, PyXtrim reduces cold-start latency by 21.7% and peak memory usage by 17.1% at the median, more than double the reduction achieved by the state of the art, while debloating each application in minutes.

Georgios Alexopoulos, Konstantinos Karakatsanis, Nikolaos Alexopoulos et al. · 0 citations

#artificial intelligence Review Mar 2026

Measuring and Exploiting Contextual Bias in LLM-Assisted Security Code Review

This paper designs a realistic and controlled experimental environment, evaluating 33 CVEs across 20 real-world projects and two popular ACR pipelines, to assess the susceptibility of real-world ACR pipelines to vulnerability re-introduction attacks and finds that template-based attacks are ineffective and may even bac...

Georgios Alexopoulos, Nikolaos Alexopoulos, D. Spinellis et al. · 4 citations · ⚡1