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Romain GUIGNARD

PROFILE

Romain Guignard

Over 20 months, contributed to the OpenCTI-Platform/connectors repository by building and enhancing threat intelligence integrations, data ingestion connectors, and backend automation for cybersecurity workflows. Focused on robust API integration, Python development, and Docker-based deployments, the work included developing new connectors for sources like SigmaHQ, Google DTM, and Sumo Logic, as well as improving data mapping, enrichment, and error handling across STIX and YARA formats. Emphasized maintainability through comprehensive unit testing, documentation updates, and configuration management. These efforts improved data quality, operational reliability, and onboarding speed, supporting scalable threat intelligence ingestion and streamlined security operations for enterprise environments.

Overall Statistics

Feature vs Bugs

65%Features

Repository Contributions

126Total
Bugs
29
Commits
126
Features
54
Lines of code
20,346
Activity Months20

Work History

June 2026

1 Commits • 1 Features

Jun 1, 2026

June 2026 monthly summary for OpenCTI-Platform/connectors. Focused on improving reliability and maintainability through enhanced test coverage for SigmaHQConnector.process_message. No major bug fixes reported this month; emphasis was on quality assurance, regression safety, and documentation of test coverage to support stable releases. Business value: reduced production risk, faster detection of edge cases, and clearer ownership via automated tests.

May 2026

2 Commits • 1 Features

May 1, 2026

May 2026: Focused on automating threat intelligence ingestion and improving data quality within OpenCTI-Platform/connectors. Delivered a Sigma Rule Ingestion Connector to ingest Sigma rules from SigmaHQ (covering 3,000+ indicators). Refactored the STIX indicator conversion tool types handling to remove unnecessary campaign relationships and to support optional tool types for Google TI feeds. These changes enhance automation, data completeness, interoperability, and operational efficiency for security teams.

April 2026

8 Commits • 5 Features

Apr 1, 2026

April 2026 — OpenCTI-Platform/connectors: Delivered key threat ingestion enhancements, data enrichment, and stability improvements that strengthen threat visibility and operational resilience. Highlights include a new Google DTM Connector with configuration, Docker deployment, and STIX conversion; enrichment of vulnerability data in STIX notes and references; aliases extraction and mapping for campaigns to enrich metadata; and cleanup of MITRE ATT&CK mappings to streamline attack pattern generation. Critical fixes addressed Malware first_seen/last_seen handling and connector scope naming to reduce ingestion failures. These changes collectively improve data quality, reduce maintenance overhead, and accelerate threat intelligence workflows.

March 2026

4 Commits • 2 Features

Mar 1, 2026

March 2026 monthly summary for fbicyber/opencti__opencti and OpenCTI-Platform/connectors. Focused on improving developer enablement, data integrity, and vulnerability management. Delivered feature-oriented documentation and issue-template improvements, fixed a critical manifest link, and added KEV flag-only mode in the CISA connector. These changes reduce onboarding time, improve issue triage, and accelerate vulnerability tagging, while maintaining data accuracy and system stability.

February 2026

10 Commits • 6 Features

Feb 1, 2026

February 2026 monthly highlights across OpenCTI-Platform/connectors and OpenCTI: delivered significant enhancements to data enrichment, threat scoring, API performance, and documentation. These efforts improved data quality for security investigations, accelerated data retrieval, and clarified deployment and upgrade guidance for enterprise users.

January 2026

13 Commits • 5 Features

Jan 1, 2026

January 2026 (2026-01) — OpenCTI-Platform/connectors monthly recap focused on expanding threat intel coverage, strengthening data integrity, streamlining the product surface, and improving developer experience.

December 2025

13 Commits • 2 Features

Dec 1, 2025

December 2025 Monthly Summary for OpenCTI-Platform/connectors. Delivered key features and reliability improvements across Detection Rules and Threat Intelligence integrations, with robust data quality work for Recorded Future. Result: better alert accuracy, faster triage, and consistent branding across TI connectors.

November 2025

5 Commits • 3 Features

Nov 1, 2025

November 2025 monthly summary for OpenCTI-Platform/connectors: Delivered reliability and performance improvements for MISP connector, fixed duplicate indicator re-imports through correct state handling, expanded STIX modeling to accurately reflect adversaries and vulnerabilities, and updated SentinelOne connector documentation to improve onboarding and compatibility.

October 2025

7 Commits • 4 Features

Oct 1, 2025

Month 2025-10 — Delivered robust data integration improvements across OpenCTI-Platform/connectors, improving reliability, traceability, data quality, and UI branding. Key outcomes include hardened Recorded Future Analyst Notes processing, added external references linking STIX data to original notes in the RF portal, enhanced S3 data quality with severity mapping and better Note modeling with multi-prefix processing, reliable Composer/Hub manifest handling, tag-based alert filtering for Elastic Security Incidents ingestion, and branding updates with connector logos. These changes reduce error rates, improve data fidelity, enable finer-grained ingestion, and strengthen overall platform trust for security operations and risk analysis.

September 2025

19 Commits • 5 Features

Sep 1, 2025

September 2025 monthly highlights for OpenCTI-Platform/connectors: Delivered cross-connector manifest and metadata hygiene, improved connector reliability, expanded data ingestion capabilities, and cleaned up catalog maintenance. Key outcomes include standardized manifest data (names, descriptions, usage, and date formats) across 9+ connectors; enhanced IPInfo error reporting and UX; branding asset updates for clearer connector identity; new external data source manifests and logos enabling broader ingestion; S3 connector enrichment with x_credit data mapped to STIX Identity/Relationships; and catalog hygiene with deprecation of the email intel IMAP connector and stability improvements (Sumo Logic env var naming and dependency upgrades). This work improves data quality, onboarding speed for new connectors, and maintenance efficiency, while demonstrating proficiency in manifest governance, data modeling, error handling, asset pipelines, and dependency management.

August 2025

8 Commits • 5 Features

Aug 1, 2025

August 2025 highlights across OpenCTI-Platform/connectors focused on reliability, automation, and threat-intel integration. Delivered key features including Hygiene Connector Improvements, MITRE ATT&CK Navigator Layer Importer, YARA Rules Exporter, and OpenCTI-Sumo Logic SIEM Connector, complemented by stability fixes such as the S3 Connector crash fix and logging hardening. These efforts improved data hygiene accuracy, enabled richer MITRE mapping and YARA rule export, automated indicator synchronization with Sumo Logic, and reduced runtime crashes, delivering faster threat detection and lower operational risk. Technologies demonstrated include Python-based connector development, JSON processing and normalization, robust logging, and API-driven data synchronization.

July 2025

4 Commits • 1 Features

Jul 1, 2025

July 2025 monthly delivery focused on robustness, data richness, and developer experience across two OpenCTI repos. Delivered S3 connector enhancements with richer data mappings and STIX 2.0 integration; validated documentation and compatibility improvements for SilentPush and Microsoft Sentinel Intel connectors; improved MalwareBazaar API resilience and configuration hygiene; updated default MIME mapping for Yara files. Result: richer, interoperable data, fewer runtime/config issues, and stronger platform reliability.

June 2025

1 Commits

Jun 1, 2025

June 2025 monthly summary for OpenCTI-Platform/docs focusing on documentation accuracy and clarity. The main deliverable this month was a targeted documentation correction to clarify the scope of JSON Feed and JSON Mapper, ensuring users apply these features to JSON files and APIs rather than CSV. In addition, minor grammar and readability improvements were made across the docs to improve consistency and reduce confusion. The work is traceable to commit 8a29ecb21ecf66efe74d2b470141202df6af8050 ("Fix JSON Feed/Mapper documentation" #297).

May 2025

5 Commits • 3 Features

May 1, 2025

In May 2025, the OpenCTI-Platform/connectors team delivered four features and one stability improvement across connectors, enhancing threat intelligence ingestion, authentication reliability, and deployment stability. The work expanded data sources and data quality (via STIX 2.1), improved connector robustness, and reduced operational risk for build-time image creation.

April 2025

2 Commits

Apr 1, 2025

Monthly summary for 2025-04: OpenCTI-Platform/connectors delivered stability and reliability improvements through targeted bug fixes in Flashpoint and QRadar connectors, enhancing data completeness, error handling, and observability. These changes support enterprise data workflows by ensuring richer report data and more robust connector behavior.

March 2025

7 Commits • 1 Features

Mar 1, 2025

OpenCTI-Platform/connectors: March 2025 summary highlighting reliability improvements, STIX consistency, and TLP-related feature enhancements across the Sentinel, Defender, Bambenek, and IPSum connectors.

February 2025

6 Commits • 5 Features

Feb 1, 2025

February 2025 monthly summary for OpenCTI-Platform focusing on connectors and documentation. Key deliverables include the YARA to STIX conversion via ImportFileYARA, time-bounded processing for Sentinel incidents, Threat Actor to Intrusion Set mapping in Wiz, and enhanced file hashing/metadata handling in Sentinel Intel. Documentation updates reflect automated imports and the new ImportFileYARA connector. These investments improve threat intel ingestion, data modeling accuracy, and operational observability, while leveraging Python, Docker, YAML, and STIX tooling to enable scalable integrations and faster incident response.

January 2025

4 Commits • 2 Features

Jan 1, 2025

January 2025 milestones: Delivered documentation and architectural improvements across docs and connectors. Introduced TAXII Push ingestion documentation and ensured STIX 2.1 compatibility; clarified terminologies to prevent misconfigurations in CSV ingestion; refactored the Flashpoint connector into a modular architecture with new client API, configuration, and STIX conversion modules while preserving core data import; improved Zvelo connector with robust token lifecycle management by moving client initialization into the intelligence collection workflow and adding error handling and logging.

December 2024

6 Commits • 3 Features

Dec 1, 2024

December 2024 — OpenCTI-Platform/connectors: Delivered enhancements and new capabilities while stabilizing existing integrations. Key features include Import System Improvements (refined data extraction for importDocument and clarified default import configuration values; commits 3d6fd273f4b887d13b50dfa5149fd90e8d9e9bf1, 515947b962bae2c6734a31b4106fba530e00e3f2), Zvelo Threat Intelligence Connector (new integration with Docker configurations, Python fetch scripts, and STIX conversion for phishing, malicious, and threat intel feeds; commit 89781c154dc3d41552294eb196c3b114dff55e3e), and HarfangLab Connector configuration/name updates (STREAM, renamed to HarfangLab, scope harfanglab; commit aefa1bd060e109d90750b9a200d157aae7e56a41). Major bugs fixed include Mandiant Connector: Originates-from relationship fix to correct data geography logic by commenting out problematic blocks (commit add1b714083dd03f1db6d8157d30192f1b8ab9ee) and VirusTotal Livehunt Notifications: plyara logger fix and log level tuning to reduce noise (commit 5a346b3902308712efa2ef4c9f7069fa3f6389be). Overall impact: improved data accuracy, reliability, and maintainability; expanded threat intel ingestion capabilities; and standardized connector configuration and naming conventions, directly contributing to faster investigations and safer risk scoring. Technologies/skills demonstrated: Docker-based deployments, Python scripting for data ingestion, STIX conversions, data-model corrections, and logging/configuration best practices."

November 2024

1 Commits

Nov 1, 2024

November 2024 — OpenCTI Platform: Connectors. Focused on stability and data integrity improvements. Delivered a critical bug fix addressing Relationship serialization to ensure JSON compatibility across API responses and data exports.

Activity

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Quality Metrics

Correctness93.0%
Maintainability90.8%
Architecture89.2%
Performance87.2%
AI Usage21.4%

Skills & Technologies

Programming Languages

DockerfileJSONMarkdownPHPPythonShellYAMLpythonyaml

Technical Skills

API DevelopmentAPI IntegrationAPI developmentAPI integrationAsset ManagementAsynchronous ProgrammingAuthenticationAuthentication (Cognito)Backend DevelopmentBug FixingComposerConfigurationConfiguration ManagementConnector DevelopmentContainerization

Repositories Contributed To

4 repos

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

OpenCTI-Platform/connectors

Nov 2024 Jun 2026
19 Months active

Languages Used

PythonDockerfileMarkdownShellYAMLpythonyamlPHP

Technical Skills

API IntegrationBackend DevelopmentData SerializationBug FixingConfigurationConfiguration Management

OpenCTI-Platform/docs

Jan 2025 Jun 2025
3 Months active

Languages Used

Markdown

Technical Skills

Documentation

OpenCTI-Platform/opencti

Jul 2025 Feb 2026
2 Months active

Languages Used

PythonMarkdown

Technical Skills

Backend Developmentdocumentationproject managementtechnical writingversion control

fbicyber/opencti__opencti

Mar 2026 Mar 2026
1 Month active

Languages Used

MarkdownYAML

Technical Skills

GitHubdocumentationissue trackingtechnical writingtemplate management