
Yili Li developed and enhanced core backend systems for the StackRox platform, focusing on vulnerability management, image enrichment, and data integrity within the stackrox/stackrox and stackrox/scanner repositories. Over twelve months, Yili designed and implemented features such as a PostgreSQL-backed base image management system, robust concurrency controls for ad-hoc scans, and EPSS data integration for risk-based vulnerability analysis. Leveraging Go, Protocol Buffers, and PostgreSQL, Yili improved data modeling, export reliability, and configuration management. The work demonstrated depth in backend development, addressing complex dependency management, CI/CD workflows, and security-focused data pipelines, resulting in more reliable and maintainable security operations.
February 2026 (2026-02) monthly summary for stackrox/stackrox: Feature delivery focused on Base Image Detection and Enrichment to strengthen vulnerability assessment. Delivered verification and change-detection for legacy and user-provided base images, and introduced a ROX_BASE_IMAGE_DETECTION feature flag to enable controlled rollout. Integrated base image detection into the image enrichment pipeline to improve accuracy and consistency across the pipeline. Implemented automatic component updates when base images change, ensuring alignment with baselines. Updated delegateEnrichImage to match base images, ensuring consistent enrichment results across sources. No major bugs fixed this period; stability improvements accompany feature rollout. Impact: stronger software supply chain security posture, faster, more reliable risk analytics, and reduced manual intervention. Technologies/skills demonstrated: feature flagging, image enrichment pipeline integration, base image verification/change-detection, commit-driven delivery, cross-component coordination, and CI/CD readiness.
February 2026 (2026-02) monthly summary for stackrox/stackrox: Feature delivery focused on Base Image Detection and Enrichment to strengthen vulnerability assessment. Delivered verification and change-detection for legacy and user-provided base images, and introduced a ROX_BASE_IMAGE_DETECTION feature flag to enable controlled rollout. Integrated base image detection into the image enrichment pipeline to improve accuracy and consistency across the pipeline. Implemented automatic component updates when base images change, ensuring alignment with baselines. Updated delegateEnrichImage to match base images, ensuring consistent enrichment results across sources. No major bugs fixed this period; stability improvements accompany feature rollout. Impact: stronger software supply chain security posture, faster, more reliable risk analytics, and reduced manual intervention. Technologies/skills demonstrated: feature flagging, image enrichment pipeline integration, base image verification/change-detection, commit-driven delivery, cross-component coordination, and CI/CD readiness.
January 2026 monthly summary for stackrox/stackrox. Key focus: Base Image Matching and Enrichment across layered images, with maximum-layer prioritization and base-image detection, plus a refactor introducing LayerType to clarify image component management. Base image DB access improvements were implemented to ensure robust enrichment data flow. The combined work enhances image provenance accuracy, enrichment reliability, and supports faster, more reliable security scans.
January 2026 monthly summary for stackrox/stackrox. Key focus: Base Image Matching and Enrichment across layered images, with maximum-layer prioritization and base-image detection, plus a refactor introducing LayerType to clarify image component management. Base image DB access improvements were implemented to ensure robust enrichment data flow. The combined work enhances image provenance accuracy, enrichment reliability, and supports faster, more reliable security scans.
Month: 2025-12 — Delivered a scalable Base Image Management System using a PostgreSQL datastore to govern base images and their layers for stackrox/stackrox. Implemented data modeling, CRUD operations, and upsert support, plus mechanisms to retrieve candidate base images, enabling faster and safer image selection in build pipelines. Strengthened data integrity with improved relational design across base images, repositories, and layers, and extended the images model to support robust governance.
Month: 2025-12 — Delivered a scalable Base Image Management System using a PostgreSQL datastore to govern base images and their layers for stackrox/stackrox. Implemented data modeling, CRUD operations, and upsert support, plus mechanisms to retrieve candidate base images, enabling faster and safer image selection in build pipelines. Strengthened data integrity with improved relational design across base images, repositories, and layers, and extended the images model to support robust governance.
Month: 2025-10 — Delivered a targeted feature to establish a stable startup baseline for the scanner service within stackrox/scanner. This work focuses on correctness and predictability of defaults at initialization, enabling smoother deployments and reducing configuration drift. Key outcomes include a concrete feature delivery on baseline initialization using genesis_manifests.json, traceable to a single commit, and improved deployment reliability across environments.
Month: 2025-10 — Delivered a targeted feature to establish a stable startup baseline for the scanner service within stackrox/scanner. This work focuses on correctness and predictability of defaults at initialization, enabling smoother deployments and reducing configuration drift. Key outcomes include a concrete feature delivery on baseline initialization using genesis_manifests.json, traceable to a single commit, and improved deployment reliability across environments.
July 2025: Delivered a critical bug fix in the scanner updater to support version-aware exports for scanner bundles. Implemented conditional application of the --split flag for v1 bundles, ensuring correct export behavior across versions. This work stabilizes exports, reduces deployment risk, and aligns with versioned feature expectations. Key change tracked in commit 3ae82dad574adaa65f38fa383910732f272e8344 and associated PR (#15887).
July 2025: Delivered a critical bug fix in the scanner updater to support version-aware exports for scanner bundles. Implemented conditional application of the --split flag for v1 bundles, ensuring correct export behavior across versions. This work stabilizes exports, reduces deployment risk, and aligns with versioned feature expectations. Key change tracked in commit 3ae82dad574adaa65f38fa383910732f272e8344 and associated PR (#15887).
June 2025 monthly summary for stackrox/stackrox: Delivered stability and standardization across the vulnerability workflow and dependency management, focusing on reliability, data quality, and performance improvements.
June 2025 monthly summary for stackrox/stackrox: Delivered stability and standardization across the vulnerability workflow and dependency management, focusing on reliability, data quality, and performance improvements.
May 2025 — StackRox (stackrox/stackrox) highlights: two core deliverables focused on vulnerability data accuracy and scanner resilience, driving faster remediation and more stable operations. Key features delivered - Vulnerability FixedInVersion Accuracy Enhancement: improved vulnerability data precision by correcting FixedInVersion handling; updated lastAffected to fixed for three Tomcat embed CVEs and refined the FixedInVersion logic to ignore lastAffected when determining the fixed version. Commits: 961e7ff97019cca0b313077094d79f1abd4469e4; 5765d3c6ae4b3f3de5bba3e796042c37734a2458. - Increase Bundle Export Timeout and Update Dependencies: extended bundle export timeout to 6 hours; updated OpenTelemetry dependencies; temporarily forked quay.io/claircore to address a Vex update and resolve dependency conflicts. Commit: 325036c67b0e1eb4799645f93ac67d50e99b823f. Major bugs fixed - FixedInVersion handling edge cases causing misreporting of fixed versions for CVEs (three Tomcat embed CVEs); updated logic to ignore lastAffected when determining fixed version, improving accuracy of vulnerability data (ROX-25598, ROX-29284). Overall impact and accomplishments - Improved vulnerability reporting accuracy, enabling faster and more reliable remediation decisions. - Increased scanner resilience and throughput, reducing timeouts and operational overhead during exports. - Demonstrated effective patching of external components and dependency management (OpenTelemetry, Claircore forks). Technologies/skills demonstrated - CVE data modeling and FixedInVersion logic, Tomcat CVE handling - OpenTelemetry dependency management and observability enhancements - Timeout tuning and resilience in scanner export pipelines - Patch management and forking external dependencies (claircore)
May 2025 — StackRox (stackrox/stackrox) highlights: two core deliverables focused on vulnerability data accuracy and scanner resilience, driving faster remediation and more stable operations. Key features delivered - Vulnerability FixedInVersion Accuracy Enhancement: improved vulnerability data precision by correcting FixedInVersion handling; updated lastAffected to fixed for three Tomcat embed CVEs and refined the FixedInVersion logic to ignore lastAffected when determining the fixed version. Commits: 961e7ff97019cca0b313077094d79f1abd4469e4; 5765d3c6ae4b3f3de5bba3e796042c37734a2458. - Increase Bundle Export Timeout and Update Dependencies: extended bundle export timeout to 6 hours; updated OpenTelemetry dependencies; temporarily forked quay.io/claircore to address a Vex update and resolve dependency conflicts. Commit: 325036c67b0e1eb4799645f93ac67d50e99b823f. Major bugs fixed - FixedInVersion handling edge cases causing misreporting of fixed versions for CVEs (three Tomcat embed CVEs); updated logic to ignore lastAffected when determining fixed version, improving accuracy of vulnerability data (ROX-25598, ROX-29284). Overall impact and accomplishments - Improved vulnerability reporting accuracy, enabling faster and more reliable remediation decisions. - Increased scanner resilience and throughput, reducing timeouts and operational overhead during exports. - Demonstrated effective patching of external components and dependency management (OpenTelemetry, Claircore forks). Technologies/skills demonstrated - CVE data modeling and FixedInVersion logic, Tomcat CVE handling - OpenTelemetry dependency management and observability enhancements - Timeout tuning and resilience in scanner export pipelines - Patch management and forking external dependencies (claircore)
April 2025: Implemented central scanning without a default cluster for delegated registry in stackrox/stackrox, enhanced diagnostics, and reinforced test coverage. Also fixed e2e test data version alignment in stackrox/scanner, improving test reliability and observability across repos.
April 2025: Implemented central scanning without a default cluster for delegated registry in stackrox/stackrox, enhanced diagnostics, and reinforced test coverage. Also fixed e2e test data version alignment in stackrox/scanner, improving test reliability and observability across repos.
Concise monthly summary for 2025-03 focusing on stackrox/stackrox. Major work centered on introducing robust ad-hoc scan concurrency controls to improve stability, predictability, and resource utilization for ad-hoc scans initiated via roxctl.
Concise monthly summary for 2025-03 focusing on stackrox/stackrox. Major work centered on introducing robust ad-hoc scan concurrency controls to improve stability, predictability, and resource utilization for ad-hoc scans initiated via roxctl.
February 2025 (stackrox/stackrox): Key contributions focused on strengthening vulnerability risk scoring and data reliability. Delivered EPSS Score Enrichment in Vulnerability Reports, enriching vulnerability data with probability and percentile scores for better risk prioritization. Updated the vulnerabilities data source URL to a cluster-internal endpoint, replacing a hardcoded Google Cloud Storage path to ensure the scanner uses a stable, internal data source. These changes improve risk-informed decision-making and operational resilience for security operations.
February 2025 (stackrox/stackrox): Key contributions focused on strengthening vulnerability risk scoring and data reliability. Delivered EPSS Score Enrichment in Vulnerability Reports, enriching vulnerability data with probability and percentile scores for better risk prioritization. Updated the vulnerabilities data source URL to a cluster-internal endpoint, replacing a hardcoded Google Cloud Storage path to ensure the scanner uses a stable, internal data source. These changes improve risk-informed decision-making and operational resilience for security operations.
January 2025: Delivered EPSS Data Support for Vulnerability Analysis in stackrox/stackrox, enabling export of EPSS data and inclusion of EPSS scores in vulnerability reports. Implemented an export option and a configurable EPSS updater to surface EPSS probabilities and percentiles in analyses and reporting, strengthening risk-based prioritization and governance for customers. No major bugs fixed this period. Technologies demonstrated: API/export design, proto evolution, feature flag/configuration for updater, and data integration for vulnerability analysis.
January 2025: Delivered EPSS Data Support for Vulnerability Analysis in stackrox/stackrox, enabling export of EPSS data and inclusion of EPSS scores in vulnerability reports. Implemented an export option and a configurable EPSS updater to surface EPSS probabilities and percentiles in analyses and reporting, strengthening risk-based prioritization and governance for customers. No major bugs fixed this period. Technologies demonstrated: API/export design, proto evolution, feature flag/configuration for updater, and data integration for vulnerability analysis.
November 2024: Delivered key features and fixes across stackrox/stackrox and stackrox/scanner, improving data integrity, CI/CD reliability, and test accuracy to support safer, faster releases.
November 2024: Delivered key features and fixes across stackrox/stackrox and stackrox/scanner, improving data integrity, CI/CD reliability, and test accuracy to support safer, faster releases.

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