Detections break silently
Detections break silently. A TA upgrade or a Cribl change shifts the data's shape -- events keep flowing, the rule returns zero, nothing errors. Alert fatigue gets the attention; the alert that never comes does the damage. Teams have CI for detections; nothing probes production after the deploy. Tracemill proves production SIEM detections fire. From pipeline entry to alert, rule by rule: schema-faithful synthetic events injected at pipeline entry (HEC, S3, syslog), per-rule verdicts against ground truth, failures localized to the ingest or detection layer. Private design-partner phase with Splunk security teams.