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02/08/2026 11:29 am
TL;DR: Enriching telemetry before SIEM ingestion can reduce volumes by 50 to 70 percent, cut licensing costs by more than half, and preserve useful context for detection and triage, according to DataBahn. The real constraint is not the SIEM itself but whether the upstream pipeline can attach context, filter noise, and route by value fast enough to matter.
NHIMG editorial — based on content published by DataBahn: Why are Legacy SIEMs a problem?
By the numbers:
- Filtering and enriching telemetry before it reaches the SIEM has reduced data volumes by 50 to 70 percent in production deployments, cutting SIEM licensing costs by more than half without sacrificing the underlying log.
- One medical device manufacturer running OT-heavy manufacturing sites cut Splunk costs by over 50 percent within seven days of deploying edge-level filtering and enrichment, without dedicating engineering bandwidth to the rollout.
Questions worth separating out
Q: How should security teams reduce SIEM costs without creating blind spots?
A: Security teams should move from ingest-everything thinking to governed data routing.
Q: Why does enrichment timing matter so much in SOC pipelines?
A: Because enrichment after ingestion arrives too late to influence the storage and licensing decision.
Q: What breaks when telemetry is routed through a single collection point?
A: Latency, resilience, and residency all start to degrade.
Practitioner guidance
- Implement pre-ingestion enrichment controls Attach identity, asset, and threat context before telemetry reaches the SIEM so retention decisions are made on enriched signal rather than raw volume.
- Build value-based routing tiers Classify telemetry into high-fidelity, summarised, and cost-efficient storage paths using explicit policy, then validate that each tier preserves the events you actually investigate.
- Cache and localise enrichment lookups Use local indexes, cached values, and asynchronous lookups for threat intel and identity context so enrichment does not become the ingestion bottleneck.
What's in the full article
DataBahn's full article covers the operational detail this post intentionally leaves for the source:
- Step-by-step architecture for Smart Edge collectors, Data Highway routing, and dual-SIEM migration paths.
- Detailed examples of how log filtering thresholds affect ingest-based pricing and retention tiers.
- Operational considerations for multi-site data planes, including residency, latency, and collection resilience.
- The specific data health monitoring and schema transformation workflow used to keep sources from going silent.
👉 Read DataBahn's analysis of pre-SIEM enrichment and XSIAM migration architecture →
Pre-SIEM enrichment and routing: are your SOC controls keeping up?
Explore further
02/08/2026 12:44 pm
Enrichment timing is now a governance decision, not a plumbing decision. When organisations attach context after ingestion, they are accepting that storage cost and analyst effort will rise before value is proven. That shifts security architecture toward budget-led compromise rather than signal-led control. For SOC leaders, the practical conclusion is that pipeline design must be treated as part of detection governance.
A question worth separating out:
Q: How do teams know if SIEM enrichment is actually working?
A: Look for fewer low-value alerts, faster time to triage, and a smaller need for analysts to pivot into external tools. If enrichment is effective, the alert itself should already contain enough identity and threat context to support an initial decision.
👉 Read our full editorial: Pre-SIEM enrichment is becoming the SOC cost control point
