
Dan Kortschak engineered robust data ingestion and integration features across the elastic/integrations and elastic/beats repositories, focusing on security analytics, data normalization, and system observability. He developed and optimized ingest pipelines using Go and Common Expression Language (CEL), enabling scalable processing of security telemetry from sources like CrowdStrike, Okta, and O365. Dan’s work included enhancing ECS alignment, implementing dynamic rate limiting, and improving error handling to ensure data integrity and operational resilience. By refactoring pipelines and expanding test coverage, he delivered maintainable, upgrade-ready solutions that improved data quality, reduced operational risk, and supported evolving requirements for Elastic’s security and analytics platforms.

October 2025 summary: Delivered across elastic-package, beats, package-spec, and integrations with a focus on modular tooling, policy automation, and runtime configurability. Features delivered include: internal tooling and test infra enhancements for Elasticsearch ingest pipelines and system test runners; Kibana package policy management enhancements enabling listing and upgrading policies; dynamic rate limit configuration for the Filebeat CEL input with mito v1.23.0 and improved documentation; script-based testing support for data streams in package-spec. Major bug fixed: Citrix WAF data stream manifest titles/descriptions corrected and changelog updated to reflect the new version and align with service names. Overall impact: improved developer productivity, safer upgrade paths, and more flexible testing, accelerating delivery cycles and data quality. Technologies demonstrated: modular refactoring, API surface expansion, test automation, runtime configurability, and cross-repo collaboration.
October 2025 summary: Delivered across elastic-package, beats, package-spec, and integrations with a focus on modular tooling, policy automation, and runtime configurability. Features delivered include: internal tooling and test infra enhancements for Elasticsearch ingest pipelines and system test runners; Kibana package policy management enhancements enabling listing and upgrading policies; dynamic rate limit configuration for the Filebeat CEL input with mito v1.23.0 and improved documentation; script-based testing support for data streams in package-spec. Major bug fixed: Citrix WAF data stream manifest titles/descriptions corrected and changelog updated to reflect the new version and align with service names. Overall impact: improved developer productivity, safer upgrade paths, and more flexible testing, accelerating delivery cycles and data quality. Technologies demonstrated: modular refactoring, API surface expansion, test automation, runtime configurability, and cross-repo collaboration.
September 2025 performance summary: Delivered cross-repo features and stability improvements across elastic/integrations, elastic/elastic-package, and elastic/beats, driving reliability, data fidelity, and secure access patterns. Key features delivered include: Splunk Data Stream for search results with APIs for creating and retrieving search jobs and events; CEL input global HTTP headers through a new resource_headers setting enabling authenticated access to side APIs; SailPoint Identity Security Cloud JSON Event Streaming with serialized JSON event delivery and a version bump to 1.2.0; Snyk Integration API parameter handling improved to ingest all issue updates. Major bug fixes and stability improvements included: O365 Integration stability and API handling fixes (cursor handling, time clamping, error propagation); CODEOWNERS sorting to improve maintainability; Jamf Protect alerts data handling improvements preserving tags and original events; M365 Defender parameter formatting improvements for large $skip with cleaner health logs. These changes collectively improve system reliability, data integrity, and developer productivity, reduce operational risk, and enable more robust data pipelines across the platform.
September 2025 performance summary: Delivered cross-repo features and stability improvements across elastic/integrations, elastic/elastic-package, and elastic/beats, driving reliability, data fidelity, and secure access patterns. Key features delivered include: Splunk Data Stream for search results with APIs for creating and retrieving search jobs and events; CEL input global HTTP headers through a new resource_headers setting enabling authenticated access to side APIs; SailPoint Identity Security Cloud JSON Event Streaming with serialized JSON event delivery and a version bump to 1.2.0; Snyk Integration API parameter handling improved to ingest all issue updates. Major bug fixes and stability improvements included: O365 Integration stability and API handling fixes (cursor handling, time clamping, error propagation); CODEOWNERS sorting to improve maintainability; Jamf Protect alerts data handling improvements preserving tags and original events; M365 Defender parameter formatting improvements for large $skip with cleaner health logs. These changes collectively improve system reliability, data integrity, and developer productivity, reduce operational risk, and enable more robust data pipelines across the platform.
2025-08 Performance Review: Delivered substantial improvements to data ingestion, processing reliability, and security coverage across Elastic Integrations and Beats. Key features and reliability work reduced data loss and operational risk, while enabling deeper visibility for Security and DevOps stakeholders.
2025-08 Performance Review: Delivered substantial improvements to data ingestion, processing reliability, and security coverage across Elastic Integrations and Beats. Key features and reliability work reduced data loss and operational risk, while enabling deeper visibility for Security and DevOps stakeholders.
July 2025 monthly summary for elastic/integrations and elastic/beats focusing on delivering robust data ingestion, enhanced event classification, and efficiency improvements. Highlights include hardened O365 Audit Logs ingestion, improved CrowdStrike severity mapping, and data-quality enhancements across multiple ingestion pipelines; complemented by ECS alignment and deduplication to boost reliability and interoperability with downstream analytics.
July 2025 monthly summary for elastic/integrations and elastic/beats focusing on delivering robust data ingestion, enhanced event classification, and efficiency improvements. Highlights include hardened O365 Audit Logs ingestion, improved CrowdStrike severity mapping, and data-quality enhancements across multiple ingestion pipelines; complemented by ECS alignment and deduplication to boost reliability and interoperability with downstream analytics.
June 2025 focused on robustness, data integrity, and upgrade readiness across elastic/integrations and elastic/beats. Delivered a portfolio of feature enhancements and critical bug fixes that improve data quality, streaming reliability, and analytics capabilities, while ensuring forward compatibility with upcoming platform versions. Highlights include broad Kibana 9.0 compatibility updates, Okta Roles Enrichment, CrowdStrike multi-resource streams, Abnormal Security grace period for data collection, and GCP Pub/Sub input improvements (proxy support and stability fixes). In addition, improvements to status reporting lifecycle in beats reduced noise and improved health visibility, and several data-specific fixes tightened data handling for Cloudflare, SIP/IP processing in O365, and various cursor/index robustness bugs.
June 2025 focused on robustness, data integrity, and upgrade readiness across elastic/integrations and elastic/beats. Delivered a portfolio of feature enhancements and critical bug fixes that improve data quality, streaming reliability, and analytics capabilities, while ensuring forward compatibility with upcoming platform versions. Highlights include broad Kibana 9.0 compatibility updates, Okta Roles Enrichment, CrowdStrike multi-resource streams, Abnormal Security grace period for data collection, and GCP Pub/Sub input improvements (proxy support and stability fixes). In addition, improvements to status reporting lifecycle in beats reduced noise and improved health visibility, and several data-specific fixes tightened data handling for Cloudflare, SIP/IP processing in O365, and various cursor/index robustness bugs.
May 2025 monthly summary for Elastic Beats and Integrations: Delivered core features ensuring data quality, observability, and improved security analytics while fixing critical integrity gaps in identity and access workflows. Strengthened fleet health visibility across multiple inputs, and enriched Okta data to boost search and indexing fidelity.
May 2025 monthly summary for Elastic Beats and Integrations: Delivered core features ensuring data quality, observability, and improved security analytics while fixing critical integrity gaps in identity and access workflows. Strengthened fleet health visibility across multiple inputs, and enriched Okta data to boost search and indexing fidelity.
In April 2025, I delivered high-impact features and reliability fixes across elastic/integrations and elastic/beats, focusing on performance, data coverage, observability, and developer experience. Highlights include cross-repo ingestion optimizations, expanded data sources, and improved data quality with robust handling of edge cases and better tracing controls, delivering measurable business value through faster data processing, richer analytics, and reduced troubleshooting time.
In April 2025, I delivered high-impact features and reliability fixes across elastic/integrations and elastic/beats, focusing on performance, data coverage, observability, and developer experience. Highlights include cross-repo ingestion optimizations, expanded data sources, and improved data quality with robust handling of edge cases and better tracing controls, delivering measurable business value through faster data processing, richer analytics, and reduced troubleshooting time.
March 2025 monthly summary: Across elastic/integrations, elastic/beats, and elastic/elastic-agent, delivered substantive features, reliability fixes, and performance improvements. Highlights include security-focused enhancements to Imperva WAF configurations and URL handling; data architecture upgrade with Entity Analytics Okta splitting user and device streams; expanded CrowdStrike coverage with required threat.intelligence fields, test stabilization, and EppDetectionSummaryEvent support; runtime performance and concurrency refinements in Elastic Agent; and security/data-management hardening in Azure Blob logging and HTTP endpoint body size controls. These contributions improve data integrity, security posture, system observability, and developer experience, delivering measurable business value in faster issue resolution, safer logging, and more scalable data pipelines.
March 2025 monthly summary: Across elastic/integrations, elastic/beats, and elastic/elastic-agent, delivered substantive features, reliability fixes, and performance improvements. Highlights include security-focused enhancements to Imperva WAF configurations and URL handling; data architecture upgrade with Entity Analytics Okta splitting user and device streams; expanded CrowdStrike coverage with required threat.intelligence fields, test stabilization, and EppDetectionSummaryEvent support; runtime performance and concurrency refinements in Elastic Agent; and security/data-management hardening in Azure Blob logging and HTTP endpoint body size controls. These contributions improve data integrity, security posture, system observability, and developer experience, delivering measurable business value in faster issue resolution, safer logging, and more scalable data pipelines.
February 2025 performance summary focusing on data fidelity, ingestion reliability, and observability across elastic/integrations and elastic/beats. Delivery prioritized cross-product data quality improvements, robust ingestion pipelines, and better operator visibility. Key features delivered span CrowdStrike, Auth0, Abnormal Security, Imperva Cloud WAF, Prisma Access, Prisma Cloud, Snyk, Jamf Pro, AWS, and Beats components, with targeted bug fixes to stabilize mappings and event classification. The month also included standards updates and documentation enhancements to support maintainability. Key features delivered: - CrowdStrike Integration: inbound/outbound ingest pipelines; maps 'neither' and 'both' directions to 'unknown' in ECS to improve network data accuracy. - Auth0 Integration: preserve original event type identifier via auth0.logs.data.type_id; fixes to event.type/event.category for failed authentication events. - Abnormal Security Integration: include judgementStatus in fingerprint to improve event identification; updates to changelog and manifest. - Imperva Cloud WAF Integration: enhanced API error reporting with detailed messages for API call failures; version updated. - Prisma Access Integration: correct THREAT/indicator classification and DNS handling; improved handling of PanOSDNSResponse/PanOSRecordType arrays. - Prisma Cloud Integration: enhanced text searching in policy fields by mapping description/name/recommendation to text fields for multi-field search. - Snyk Integration: robust handling of empty keys by renaming to no_extension and removing the empty key to ensure stable ingestion. - Jamf Pro Integration: MAC normalization and ECS alignment; version updates and OS version normalization. - AWS Integration: ignore long CloudTrail fields (request_parameters, response_elements) to reduce ingestion errors; version bump. - Sublime Security Documentation: improved file_selectors documentation with regex matching details and interaction with global settings; integration version increment. - SentinelOne / Digital Guardian / Qualys / Symantec / etc.: various reliability and mapping improvements documented in commits. - Beats: HTTP JSON input metrics added to track total events and pages published; CEL input upgraded with mito v1.17.0 for new array functions (sum, front, tail). Major bugs fixed: - M365 Defender: fix message ID handling (#12546) improving mapping accuracy. - Qualys VMDR: tolerate missing version details in asset_host_detection vulnerability results (#12734). - Snyk: prevent empty-keyed fields in snyk.audit_logs.content.notSupported (#12817). - Active Directory provider: fix use-before-initialization bug during full synchronization (#42682). - Additional stability fixes across modules to prevent nil pointer dereferences and improve error handling. Overall impact and accomplishments: - Improved data fidelity across multiple integrations, reducing mis-mapped fields and improving ECS-aligned analytics. - Enhanced operator observability through new metrics and finer-grained error reporting, enabling faster triage and fewer false positives. - Strengthened ingestion reliability with robust handling of edge cases (empty keys, missing version data, long fields), and improved searchability across policy descriptions and names. - Demonstrated end-to-end capabilities in ECS mappings, event fingerprinting, and versioned releases, supporting scalable monitoring and analytics. Technologies/skills demonstrated: - ECS data modeling and mapping, inbound/outbound pipeline design. - Advanced text search and multi-field indexing for policy data. - Robust error reporting and observability instrumentation. - Version management and changelog/manifest updates. - Audio: Not applicable; focus on security data platforms, ingestion pipelines, and CEL upgrade.
February 2025 performance summary focusing on data fidelity, ingestion reliability, and observability across elastic/integrations and elastic/beats. Delivery prioritized cross-product data quality improvements, robust ingestion pipelines, and better operator visibility. Key features delivered span CrowdStrike, Auth0, Abnormal Security, Imperva Cloud WAF, Prisma Access, Prisma Cloud, Snyk, Jamf Pro, AWS, and Beats components, with targeted bug fixes to stabilize mappings and event classification. The month also included standards updates and documentation enhancements to support maintainability. Key features delivered: - CrowdStrike Integration: inbound/outbound ingest pipelines; maps 'neither' and 'both' directions to 'unknown' in ECS to improve network data accuracy. - Auth0 Integration: preserve original event type identifier via auth0.logs.data.type_id; fixes to event.type/event.category for failed authentication events. - Abnormal Security Integration: include judgementStatus in fingerprint to improve event identification; updates to changelog and manifest. - Imperva Cloud WAF Integration: enhanced API error reporting with detailed messages for API call failures; version updated. - Prisma Access Integration: correct THREAT/indicator classification and DNS handling; improved handling of PanOSDNSResponse/PanOSRecordType arrays. - Prisma Cloud Integration: enhanced text searching in policy fields by mapping description/name/recommendation to text fields for multi-field search. - Snyk Integration: robust handling of empty keys by renaming to no_extension and removing the empty key to ensure stable ingestion. - Jamf Pro Integration: MAC normalization and ECS alignment; version updates and OS version normalization. - AWS Integration: ignore long CloudTrail fields (request_parameters, response_elements) to reduce ingestion errors; version bump. - Sublime Security Documentation: improved file_selectors documentation with regex matching details and interaction with global settings; integration version increment. - SentinelOne / Digital Guardian / Qualys / Symantec / etc.: various reliability and mapping improvements documented in commits. - Beats: HTTP JSON input metrics added to track total events and pages published; CEL input upgraded with mito v1.17.0 for new array functions (sum, front, tail). Major bugs fixed: - M365 Defender: fix message ID handling (#12546) improving mapping accuracy. - Qualys VMDR: tolerate missing version details in asset_host_detection vulnerability results (#12734). - Snyk: prevent empty-keyed fields in snyk.audit_logs.content.notSupported (#12817). - Active Directory provider: fix use-before-initialization bug during full synchronization (#42682). - Additional stability fixes across modules to prevent nil pointer dereferences and improve error handling. Overall impact and accomplishments: - Improved data fidelity across multiple integrations, reducing mis-mapped fields and improving ECS-aligned analytics. - Enhanced operator observability through new metrics and finer-grained error reporting, enabling faster triage and fewer false positives. - Strengthened ingestion reliability with robust handling of edge cases (empty keys, missing version data, long fields), and improved searchability across policy descriptions and names. - Demonstrated end-to-end capabilities in ECS mappings, event fingerprinting, and versioned releases, supporting scalable monitoring and analytics. Technologies/skills demonstrated: - ECS data modeling and mapping, inbound/outbound pipeline design. - Advanced text search and multi-field indexing for policy data. - Robust error reporting and observability instrumentation. - Version management and changelog/manifest updates. - Audio: Not applicable; focus on security data platforms, ingestion pipelines, and CEL upgrade.
Month 2025-01: Focused on stabilizing and expanding integrations in elastic/integrations. Delivered critical bug fixes, feature enhancements, and test coverage to improve reliability, security posture, and developer productivity. Key outcomes include silencing log warnings in O365 integration, enabling fingerprint-based log scanning in GitLab, restoring Imperva Cloud WAF system test coverage, and improving readability of Mimecast CEL templates.
Month 2025-01: Focused on stabilizing and expanding integrations in elastic/integrations. Delivered critical bug fixes, feature enhancements, and test coverage to improve reliability, security posture, and developer productivity. Key outcomes include silencing log warnings in O365 integration, enabling fingerprint-based log scanning in GitLab, restoring Imperva Cloud WAF system test coverage, and improving readability of Mimecast CEL templates.
December 2024 monthly summary for two key repositories: elastic/beats and elastic/integrations. The month focused on delivering observable, secure, and scalable data ingestion features, while hardening data quality, logging safety, and integration coverage. The work emphasized business value through reliability improvements, security hardening, and expanded platform support.
December 2024 monthly summary for two key repositories: elastic/beats and elastic/integrations. The month focused on delivering observable, secure, and scalable data ingestion features, while hardening data quality, logging safety, and integration coverage. The work emphasized business value through reliability improvements, security hardening, and expanded platform support.
November 2024: Strengthened data fidelity and ingestion reliability across Elastic Integrations and Beats by delivering targeted mappings, deduplication safeguards, and extensible data schemas. The month yielded measurable business value through richer security telemetry, reduced duplication, and more robust pipelines that support faster threat detection and compliance reporting.
November 2024: Strengthened data fidelity and ingestion reliability across Elastic Integrations and Beats by delivering targeted mappings, deduplication safeguards, and extensible data schemas. The month yielded measurable business value through richer security telemetry, reduced duplication, and more robust pipelines that support faster threat detection and compliance reporting.
October 2024 monthly summary for elastic/integrations focusing on reliability and data integrity across security integrations.
October 2024 monthly summary for elastic/integrations focusing on reliability and data integrity across security integrations.
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