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Author

Fabio Santos

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Preprint Aug 2026

Does Fixing Break Security? An Empirical Study of Security Degradation in Iterative LLM-Driven Infrastructure-as-Code Repair

Background: Iterative feedback loops are the dominant paradigm for improving LLM-generated Infrastructure-as-Code (IaC): validators such as Checkov and terraform validate feed error signals back for successive repair attempts. Prior work reports cumulative-best metrics, which are non-decreasing by construction, so the...

Benjamin Agyekum, Fabio Santos · 0 citations
Preprint Aug 2026

Rethinking Automated Program Repair: The Impact of Bug Complexity, Fault Localization, and LLM Cost-efficiency

A comprehensive empirical analysis of LLM-based APR techniques, focusing on how repair performance is shaped by bug complexity, fault localization, reasoning settings, and costs, reveals a nontrivial trade-off between repair effectiveness and computational cost.

Jun-Chi Liu, Ali Bigdeli, Roya Daneshi et al. · 2 citations
Book Open access Jul 2026

Lifecycle-Aware GenAI Assistance with MCP via Context Refinement Loops: A Reference Architecture

DevCoach is presented as a reference architecture built on the Model Context Protocol to make GenAI assistance more lifecycle-aware, governable, and inspectable in organizational settings and reframes GenAI integration as a software engineering design and governance problem rather than a prompt-level optimization probl...

Omar Elsisi, Fabio Santos, Glaucia Melo · 0 citations

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