threatgrid/ctia
Dec 2024 – Feb 2026
5 Months active
Languages Used
ClojureJavaXML
Technical Skills
API DevelopmentBackend DevelopmentSchema ValidationAPI developmentClojurebackend development
Guillaume Buisson
PROFILE
Guillaume Buisson
Guillaume Buisson contributed to the threatgrid/ctia repository by delivering robust backend enhancements focused on data integrity, security, and system reliability. Over five months, he implemented features such as CTIM-compatible sighting time interval fields and upgraded the GraphQL platform, ensuring compatibility and improved developer experience. Guillaume addressed critical issues by enforcing mandatory entity IDs in bulk operations, upgrading logging dependencies to remediate vulnerabilities, and introducing JWKS-based JWT authentication for secure key rotation. His work demonstrated strong proficiency in Clojure, Java, and backend development, with careful attention to schema validation, dependency management, and maintaining operational stability throughout evolving requirements.
Overall Statistics
Feature vs Bugs
43%Features
Repository Contributions
7Total
Bugs
4
Commits
7
Features
3
Lines of code
64,333
Activity Months5
Your Network
8 peopleShared Repositories
8
Adam SayerMember
Ambrose Bonnaire-SergeantMember
Andrii PidhorodetskyiMember
Guillaume ErétéoMember
Kirill ChernyshovMember
Matthieu SprunckMember
MiaMember
Sam WaggonerMember
Work History
February 2026
1 Commits
Feb 1, 2026February 2026 monthly summary for threatgrid/ctia focused on vulnerability remediation in the logging stack. Delivered a critical CVE-2026-1225 patch by upgrading logback and slf4j, validated compatibility, and documented in the commit c768dc546537449e8f67dd3dd3275ac9ffa18b2d. This reduces exposure and preserves stability while maintaining alignment with security and compliance requirements.
1 Commits
Feb 1, 2026February 2026 monthly summary for threatgrid/ctia focused on vulnerability remediation in the logging stack. Delivered a critical CVE-2026-1225 patch by upgrading logback and slf4j, validated compatibility, and documented in the commit c768dc546537449e8f67dd3dd3275ac9ffa18b2d. This reduces exposure and preserves stability while maintaining alignment with security and compliance requirements.
February 2026
December 2025
2 Commits • 1 Features
Dec 1, 2025December 2025: Delivered CTIM-compatible sighting time interval fields in threatgrid/ctia, including data-model updates and ES mappings; upgraded CTIM to 1.3.28; implemented migration stability improvements by upgrading ductile to 0.6.1 and removing hard migration overrides to support long-running operations. Result: higher data fidelity, robust CTIM integration, and more reliable migrations.
December 2025
2 Commits • 1 Features
Dec 1, 2025December 2025: Delivered CTIM-compatible sighting time interval fields in threatgrid/ctia, including data-model updates and ES mappings; upgraded CTIM to 1.3.28; implemented migration stability improvements by upgrading ductile to 0.6.1 and removing hard migration overrides to support long-running operations. Result: higher data fidelity, robust CTIM integration, and more reliable migrations.
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary for threatgrid/ctia: Completed a major GraphQL platform upgrade, maintained endpoint integrity, and clarified error messaging to improve developer experience. The work balanced backend modernization with stable operations, ensuring compatibility with the latest GraphQL library while keeping tests aligned with updated dependencies.
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary for threatgrid/ctia: Completed a major GraphQL platform upgrade, maintained endpoint integrity, and clarified error messaging to improve developer experience. The work balanced backend modernization with stable operations, ensuring compatibility with the latest GraphQL library while keeping tests aligned with updated dependencies.
October 2025
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for threatgrid/ctia: Strengthened security and stability through key authentication and build reliability improvements. Implemented JWKS-based JWT authentication to support key rotation and multi-key validation, and fixed the build pipeline by correcting the Clojure snapshot URL to ensure reliable artifact downloads. Together, these changes increased security posture, reduced build failures, and accelerated release readiness. Technologies demonstrated include JWT/JWKS, Clojure build tooling, and artifact management via Sonatype.
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for threatgrid/ctia: Strengthened security and stability through key authentication and build reliability improvements. Implemented JWKS-based JWT authentication to support key rotation and multi-key validation, and fixed the build pipeline by correcting the Clojure snapshot URL to ensure reliable artifact downloads. Together, these changes increased security posture, reduced build failures, and accelerated release readiness. Technologies demonstrated include JWT/JWKS, Clojure build tooling, and artifact management via Sonatype.
December 2024
1 Commits
Dec 1, 20242024-12 Monthly Summary — threatgrid/ctia: Delivered a critical data integrity improvement by making entity IDs mandatory in bulk update and patch requests. This enforces correct targeting, reduces the risk of misapplied changes, and strengthens API contract adherence. The work focused on a single high-impact bug fix with clear business value, documented with a precise commit: 98ebd5e160b2bcf95afd7b0fcdfb45bfa563bfec ("Make entity ids mandatory in Bulk update/patch requests (#1460)"). Technologies demonstrated include API schema validation, backend request validation, and robust change traceability. Impact: safer bulk operations, improved data quality, and better governance of update workflows.
1 Commits
Dec 1, 20242024-12 Monthly Summary — threatgrid/ctia: Delivered a critical data integrity improvement by making entity IDs mandatory in bulk update and patch requests. This enforces correct targeting, reduces the risk of misapplied changes, and strengthens API contract adherence. The work focused on a single high-impact bug fix with clear business value, documented with a precise commit: 98ebd5e160b2bcf95afd7b0fcdfb45bfa563bfec ("Make entity ids mandatory in Bulk update/patch requests (#1460)"). Technologies demonstrated include API schema validation, backend request validation, and robust change traceability. Impact: safer bulk operations, improved data quality, and better governance of update workflows.
December 2024
Activity
Loading activity data...
Quality Metrics
Correctness97.2%
Maintainability85.8%
Architecture85.8%
Performance85.8%
AI Usage25.8%
Skills & Technologies
Programming Languages
ClojureJavaXML
Technical Skills
API DevelopmentAPI developmentBackend DevelopmentClojureClojure programmingDependency ManagementGraphQLJava logging frameworksSchema Validationbackend developmentdata modelingdependency managementsecuritysecurity updatessystem configuration
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline