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Fabio

PROFILE

Fabio

Fabio Contreras contributed to the wazuh/wazuh repository by engineering robust security compliance and testing solutions across Linux, Windows, and macOS platforms. Over four months, he enhanced CIS policy evaluation by refactoring YAML rules and regex patterns, improving detection accuracy for kernel modules and system configurations. Fabio applied C++ and Python to expand automated test coverage, stabilize CI pipelines, and harden build systems, addressing concurrency and policy correctness issues. His work included developing cross-platform policy fixes, optimizing code style, and improving logging for better observability. These efforts resulted in more reliable compliance checks and maintainable security automation workflows within Wazuh.

Overall Statistics

Feature vs Bugs

41%Features

Repository Contributions

65Total
Bugs
19
Commits
65
Features
13
Lines of code
12,560
Activity Months4

Work History

October 2025

2 Commits • 1 Features

Oct 1, 2025

Monthly summary for 2025-10 focusing on delivering CIS Ubuntu 24.04 compliance checks improvements in wazuh/wazuh. Implemented regex improvements in cis_ubuntu24-04.yml that corrected numeric matching, refined wildcards, and broadened word matching to improve detection of kernel modules, sysctl settings, and SSH configurations. Two commits were merged: 311437c6893cbbc2e9627e8e6690c6fa2e935c96 (fix: Removed and replaced \p osregex wildcard) and 655fb5473ea04e7f4e62bfa77e0e933bd37b13cd (fix: Replaced dot behaviour and expanded word wildcard). Impact: more accurate CIS Ubuntu 24.04 checks, reduced false negatives, better alignment with CIS requirements. Technologies: regex engineering, YAML rule authoring, security automation, Git-based change tracking.

September 2025

37 Commits • 4 Features

Sep 1, 2025

September 2025 performance summary for wazuh/wazuh: tooling maturity, policy correctness, and test coverage improved CIS YAML workflows. Delivered significant refactoring and tooling enhancements, expanded cross‑platform policy fixes, added test coverage for evaluators and regex rules, and enhanced observability. Outcomes include more accurate policy evaluation, increased maintainability, and better cross‑platform reliability across Linux/Unix, macOS, Windows, and cloud/Linux distributions. Technologies demonstrated include Python tooling, C++ policy engine, Lua build tooling, PCRE2, and code style practices (Astyle).

August 2025

25 Commits • 8 Features

Aug 1, 2025

August 2025 development monthly summary for wazuh/wazuh and wazuh/qa-integration-framework. Focused on expanding test coverage, stabilizing CI, and hardening test tooling across Linux and Windows to deliver faster feedback and higher quality in protocol, SCA, and CIS areas. Business value centers on earlier defect detection, reduced release risk, and robust test automation validated across platforms.

July 2025

1 Commits

Jul 1, 2025

July 2025 monthly summary for wazuh/wazuh. Focused on stabilizing core data structures and improving thread-safety in list operations. Delivered a critical bug fix to address a race condition in OSList getters through explicit locking, resulting in more reliable, thread-safe behavior under concurrent workloads. This work reduces risk of races in high-load scenarios and contributes to overall system stability and deployment resilience.

Activity

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Quality Metrics

Correctness90.2%
Maintainability89.8%
Architecture84.4%
Performance84.0%
AI Usage20.4%

Skills & Technologies

Programming Languages

CC++CMakeMakefileMarkdownPythonShellYAML

Technical Skills

Bug FixingBuild System ConfigurationBuild SystemsC++C++ DevelopmentC/C++ CompilationCI/CDCIS BenchmarksCMakeCode FormattingCode OptimizationCode RefactoringCoding StandardsConcurrency ControlConfiguration Management

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

wazuh/wazuh

Jul 2025 Oct 2025
4 Months active

Languages Used

CC++CMakePythonShellYAMLMakefileMarkdown

Technical Skills

Bug FixingConcurrency ControlData StructuresBuild System ConfigurationBuild SystemsC++

wazuh/qa-integration-framework

Aug 2025 Aug 2025
1 Month active

Languages Used

Python

Technical Skills

PythonRegular ExpressionsTesting