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Threat detection that knows your ERP, your integrations, and your audit calendar.
24/7 SIEM monitoring, threat hunting, and incident response delivered by senior analysts who already know how JDE, NetSuite, and HubSpot environments behave. Compliance-ready reporting for CMMC, NERC CIP, HIPAA, PCI, SOX, and NIST CSF built into the engagement, not bolted on after the audit deadline.
Four triggers that bring buyers to managed
SIEM.
Your implementation partner finished and routed you to a generic support queue. Reports don't tie. Workflows don't fire. Lifecycle stages aren't tracking. The queue can't fix what wasn't built right the first time.
That is how long it takes the average mid-market company to detect a breach. Managed SIEM compresses that window from months to minutes.
Detection, response, and reporting in one engagement.
24/7 monitoring and detection
Senior analysts watch your environment around the clock. Alerts are triaged, false positives are suppressed at the source, and genuine incidents are escalated to your team within an agreed response window.
- Continuous log ingestion and correlation
- Behavioral anomaly detection
- Threat-intelligence enrichment
- Runbook-driven escalation paths
Threat hunting and investigation
Beyond reactive alerting, the team runs proactive hunts against your environment using current threat intelligence, MITRE ATT&CK techniques, and known indicators relevant to your industry.
- Hypothesis-driven hunts each quarter
- Indicator-of-compromise sweeps
- Lateral-movement detection
- Insider-threat pattern analysis
Incident response coordination
When a real incident lands, the team coordinates response steps, evidence preservation, and stakeholder communication. Your IT lead is on the phone with a senior analyst, not paging through documentation.
- Containment and eradication guidance
- Forensic-quality log preservation
- Executive status updates
- Post-incident reports for the audit file
Compliance reporting
Audit-ready reports tied to the frameworks that apply to your environment. Your auditor receives evidence packages mapped to CMMC, NERC CIP, HIPAA, PCI, SOX, or NIST CSF control families.
- Log retention to framework requirements
- Quarterly compliance posture reports
- Auditor-facing evidence packages
- Control-mapping documentation
ERP-aware coverage
Detection rules tuned to JDE, NetSuite, and HubSpot environments. The team knows which user roles have privileged access, which integrations move sensitive data, and which events represent business risk versus normal operational noise.
- Privileged-access monitoring
- Integration and API anomaly detection
- ERP-specific runbooks
- Tuned alert fidelity per platform
Quarterly review and tuning
Every 90 days, the team reviews alert volume, false-positive rates, hunt findings, and emerging threats relevant to your industry. Detection rules are tuned, and the next quarter's hunt plan is documented.
- Alert volume and fidelity report
- Hunt findings summary
- Emerging threat briefing
- Forward-looking detection roadmap
Audit-ready evidence built into the engagement.
The audit problem in mid-market is not technology. It is documentation. Most companies have logs, monitoring, and incident records scattered across tools and people. The auditor wants those artifacts assembled, mapped to control families, and signed by a named accountable team.
A managed SIEM engagement produces that artifact set continuously, not the week before the audit. Log retention is configured to framework requirements from day one. Quarterly posture reports document the controls in operation. When the audit arrives, the evidence package is already on the shelf.
The frameworks listed at right are the ones the engagement is most often scoped against. Industry-specific frameworks (FedRAMP, FISMA, HITRUST, GLBA) are supported on request and discussed in the engagement assessment.
- CMMC 2.0 Phase 2 deadline November 2026
- NERC CIP CIP-003-9 effective April 2026
- HIPAA Security Rule Healthcare and life sciences
- PCI DSS 4.0 Cardholder data environments
- SOX IT general controls and access
- NIST CSF 2.0 Voluntary baseline framework
- NIST 800-171 CUI protection, defense base
- SOC 2 Type II Service organization controls
Three phases. The same analyst team start to finish.
Managed SIEM is not a help-desk subscription. It runs in three deliberate phases, each with a written artifact and a senior analyst attached.
1
Security assessment and onboarding
Weeks 1–4
▾
Every new engagement starts with a fixed-scope assessment. The team inventories your log sources, audits the existing detection coverage, identifies the control gaps for your applicable frameworks, and produces a written diagnosis with a 12-month roadmap.
For environments without an existing SIEM, the assessment includes platform recommendations and deployment scoping. For environments already running a SIEM, the assessment surfaces tuning opportunities and coverage gaps before the engagement transitions to monitoring.
Written assessment: log-source inventory, detection coverage gaps, framework alignment, and 12-month roadmap. Yours to keep regardless of what comes next.
2
Continuous monitoring and response
12-month term
▾
The same analyst team monitors your environment 24/7. They learn your baseline, your privileged users, your integration patterns, and the events that matter to your business. Detection rules are tuned each quarter to reduce noise and improve fidelity.
Tier structures vary by environment size and log volume. Engagement scope is finalized in the assessment phase based on number of log sources, users, retention requirements, and applicable frameworks.
Continuous monitoring, tuned alerting, incident escalation, and threat hunting. Senior analyst coverage across every shift, every day of the year.
3
Quarterly reviews and audit support
Every 90 days
▾
Each quarter, the team produces a written posture report covering alert volume, hunt findings, control coverage, and emerging threats relevant to your industry. Your CISO, IT leadership, and audit team see the same artifact.
When an audit arrives, the team supports the audit cycle directly: evidence package preparation, control-mapping documentation, auditor interviews, and finding remediation if needed.
Quarterly written posture report covering monitoring metrics, hunt findings, control coverage, and forward-looking threat briefing. Audit-cycle support included.
Three things most MSSPs cannot offer.
Detection that knows what your business runs on.
Most MSSPs treat your environment as a flat network. GSI's analyst team already operates inside JDE, NetSuite, and HubSpot environments. They know which user roles have privileged access, which integrations move sensitive data, and which events are real risk versus operational noise. Alert fidelity goes up; analyst time chasing false positives goes down.
Built for the audit, not bolted on after.
Log retention, evidence packages, and control-mapping documentation are configured from day one against your applicable frameworks. When the audit lands, the artifacts are already assembled. The team has supported CMMC, NERC CIP, HIPAA, PCI, SOX, and NIST CSF audits across mid-market customers in regulated industries.
The same analysts, every quarter.
Most MSSPs route your alerts through whichever analyst is on shift. GSI assigns a named lead analyst and pod to your environment for the engagement term. They learn your baseline, your privileged users, and your business context. Continuity is the unit of value, not tickets closed.
Detection covers the operational layer. vCISO covers the strategic one.
Managed SIEM watches the environment. A virtual CISO sets direction, owns the security roadmap, and reports to the board. Many GSI customers run both.
Fractional executive security leadership for organizations that need a CISO function without the full-time hire. Strategy, board reporting, vendor risk, compliance program leadership. Often paired with managed SIEM in regulated industries.
Common questions about managed SIEM.
What is managed SIEM and how is it different from running a SIEM ourselves?
A managed SIEM engagement combines the platform itself with a 24/7 analyst team monitoring the alerts. Running a SIEM internally requires staffing three to five security analysts on rotating shifts plus the platform license. Managed SIEM compresses both into a single fixed cost, with senior analysts already trained on the alert patterns that matter for mid-market environments.
Do you support our existing SIEM platform or require a vendor switch?
Both. GSI works with existing SIEM deployments where the platform is functional and the gap is monitoring. Where the platform itself is the bottleneck, the assessment phase produces a recommended path: stay, tune, or replatform. The recommendation is yours regardless of whether you continue to a monitoring engagement.
How fast does an analyst respond to a critical alert?
Critical-severity alerts get human analyst eyes within minutes, around the clock. The exact response SLA is defined in the engagement agreement based on the tier selected, the criticality of the affected source, and the runbook configured for your environment. Specific response targets are documented in the SOW.
Does the engagement help us meet compliance audit requirements?
Yes. The engagement includes log retention configured to framework requirements, audit-ready quarterly posture reports, and evidence packages aligned to the frameworks that apply to your environment. The team has supported CMMC, NERC CIP, HIPAA, PCI, SOX, NIST CSF, and SOC 2 audit cycles.
How does ERP-aware security differ from generic MSSP coverage?
Most MSSPs treat your environment as a flat network. GSI knows your JDE, NetSuite, or HubSpot environment as a system, including which integrations matter, which user roles have privileged access, and which events represent business risk versus normal operational noise. Detection rules are tuned per platform, not generic out-of-the-box. Alert fidelity goes up; analyst time chasing noise goes down.
What does a managed SIEM engagement cost?
Engagement cost is scoped after the security assessment based on log volume, number of sources, retention requirements, applicable frameworks, and the response SLA tier selected. Indicative ranges are documented in the assessment output before any commitment. Most mid-market environments fall in a predictable band that the assessment surfaces.
Start with a security assessment.
Leave with a detection coverage analysis, framework alignment, and a 12-month roadmap.