{"product_id":"siem-architecture-with-splunk-sentinel","title":"SIEM Architecture with Splunk + Sentinel","description":"\u003ch3\u003eSIEM \u0026amp; Detection Engineering Framework — Enterprise Threat Detection Toolkit\u003c\/h3\u003e\n\u003cp\u003eAfter building detection engineering pipelines for regulated environments where a missed alert could mean exfiltrated CUI or compromised ePHI, I created this framework because most SOC teams have 500+ default vendor rules firing and zero custom detections for the threats that actually matter to their organization.\u003c\/p\u003e\n\u003cp\u003eThe core problem: MITRE ATT\u0026amp;CK has 201 techniques and 680 sub-techniques. Your SIEM vendor ships generic rules that detect 30% of them with a 40% false positive rate. Meanwhile, threat actors targeting your sector use maybe 15-20 techniques consistently — and you probably don't have solid detections for half of them.\u003c\/p\u003e\n\u003ch3\u003eWhat You Get\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDetection-as-Code Pipeline\u003c\/strong\u003e — Git-based detection management workflow using Sigma rules as the canonical format. Includes CI\/CD templates (GitHub Actions, GitLab CI) for automated rule validation, unit testing against log samples, and deployment to Splunk (SPL), Microsoft Sentinel (KQL), and Elastic (ES|QL).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e75 Custom Detection Rules\u003c\/strong\u003e — High-fidelity detections covering: credential access (Kerberoasting, AS-REP roasting, DCSync), lateral movement (PsExec, WMI, DCOM, RDP hijacking), persistence (scheduled tasks, registry run keys, WMI subscriptions), and cloud-specific techniques (STS token abuse, service principal creation, storage account key extraction).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLog Source Onboarding Playbooks\u003c\/strong\u003e — Step-by-step for 20 critical log sources: Active Directory, DNS, DHCP, VPN, EDR telemetry, cloud audit logs (CloudTrail, Azure Activity, GCP Audit), email gateway, proxy\/firewall, and Kubernetes audit logs. Includes parsing configurations and field normalization to OCSF.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlert Triage Runbooks\u003c\/strong\u003e — For each detection rule: what the alert means, investigation steps, true positive indicators, false positive conditions, and response actions. Reduces mean-time-to-triage from 15 minutes to under 3.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDetection Coverage Matrix\u003c\/strong\u003e — Heatmap of your ATT\u0026amp;CK coverage showing which techniques have detections, which have log visibility but no rules, and which have no data source at all. Prioritization framework based on threat intelligence for your sector.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBrownfield Implementation\u003c\/h3\u003e\n\u003cp\u003eWeek 1-2: Audit existing log sources and SIEM rules — identify coverage gaps against ATT\u0026amp;CK. Week 3-4: Onboard missing critical log sources starting with identity (AD\/Entra) and endpoint (EDR). Week 5-8: Deploy detection rules in phases — identity attacks first, then lateral movement, then persistence. Week 9-10: Implement detection-as-code pipeline for ongoing development and maintenance.\u003c\/p\u003e\n\u003ch3\u003eScope Limitations\u003c\/h3\u003e\n\u003cp\u003eCovers detection engineering for Windows Active Directory, major cloud providers, and common enterprise applications. Does not cover OT\/ICS-specific detections (Modbus, DNP3), mainframe security monitoring, or mobile device threat detection. Assumes you have a functioning SIEM with at least 30 days of log retention.\u003c\/p\u003e\n\u003ch3\u003eAudit Evidence\u003c\/h3\u003e\n\u003cp\u003eSatisfies NIST SP 800-53 SI-4 (Information System Monitoring), AU-6 (Audit Record Review), and IR-4 (Incident Handling). Produces: detection coverage assessment reports, rule tuning documentation, false positive reduction metrics, mean-time-to-detect trending, and continuous monitoring evidence that auditors request for SOC 2 CC7.2 and HIPAA §164.312(b) audit log review requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWritten by Kenny Ogunlowo — Detection Engineer, U.S. Secret Clearance holder. Built detection engineering pipelines at Lockheed Martin and Cigna Healthcare for classified and regulated environments.\u003c\/em\u003e\u003c\/p\u003e","brand":"Citadel Cloud Management","offers":[{"title":"Default Title","offer_id":54890409525539,"sku":"CCM-CYB-010","price":67.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0979\/8539\/7027\/files\/citadel-cybersecurity-product_2868eaca-8654-48c1-b210-aeebe5f00e60.jpg?v=1775138642","url":"https:\/\/www.citadelcloudmanagement.com\/products\/siem-architecture-with-splunk-sentinel","provider":"Citadel Cloud Management","version":"1.0","type":"link"}