The hiring math is hard. ISACA reports that 55% of cyber teams are understaffed, and about four in ten need three to six months to fill a role.
Outsourcing a SOC gives you an external team for monitoring, detection, investigation, response coordination, and reporting. This guide covers what that means, how it compares with in-house and hybrid models, the risks, and how to pick a provider.
Key Takeaways
- An outsourced SOC delivers round-the-clock monitoring, triage, investigation, response support, and reporting.
- Compare control, coverage, integration, compliance needs, and total cost before choosing.
- Strong providers investigate alerts rather than forward them.
- Success depends on defined responsibilities, clean telemetry, playbooks, and measurable service levels.
What Does Outsourcing a SOC Mean?
An outsourced SOC is a third-party team that runs some or all of your security monitoring and response. You'll also see it called a managed SOC or SOC as a Service. The labels overlap, so read the scope of work, not the name.
Outsourcing transfers operations, not accountability. The provider monitors and investigates. You keep business decisions, risk acceptance, system ownership, legal obligations, and approval of disruptive actions. NIST's incident response guidance says organizations still need to define responsibilities, information flows, and decision authority in provider arrangements.
Common Service Models
- Fully managed SOC: the provider runs monitoring, investigation, and response.
- MDR (Managed Detection and Response): expert-led detection, investigation, and response, often including containment.
- MSSP (Managed Security Service Provider): broader managed security services, sometimes including device management.
- Co-managed or hybrid: your team keeps governance or incident response while the provider adds off-hours coverage, hunting, or analyst capacity.
Providers use these terms inconsistently, and some older services have been relabeled as MDR. Match the model to your staffing reality: a co-managed approach works well when you own your tools and playbooks but lack people. DeepSeas, for example, offers fully managed, co-managed, and hybrid delivery, with customers working cases alongside analysts they can reach directly.
What Does an Outsourced SOC Actually Do?
An outsourced SOC runs the full detection-and-response cycle: collecting telemetry, validating alerts, investigating, escalating, coordinating containment, and documenting lessons learned.
Monitoring and Triage
Typical sources include:
- Endpoints and servers
- Identity systems
- Networks
- Cloud workloads and applications
- Mobile devices
- Operational technology, where the provider has the expertise
Triage matters because noise is the norm. In Oxford Economics' survey, 59% of respondents reported too many alerts and 55% too many false positives.
Analysts correlate events across sources, separate false positives from credible threats, add threat intelligence and asset context, and rank incidents by business impact.
Response and Escalation
Common response actions include:
- Isolating an endpoint
- Disabling an account
- Blocking malicious communications
- Preserving evidence
Some incidents go to your internal team or a specialist response firm.
Authority must be agreed in advance. In OT, a routine IT containment step can be unacceptable on a running production line, so every action there needs human and safety review.
Proactive Work
Mature providers do more than forward alerts. Look for:
- Threat hunting for activity that evaded existing detections
- Detection-rule tuning to your environment
- Vulnerability context and attack-path analysis
- Tabletop exercises
- Post-incident changes to controls, playbooks, and monitoring coverage
The key question is whether recurring alerts and incident findings turn into new detections and tighter controls. DeepSeas describes a loop in which investigations produce detection rules that deploy across every monitored environment.
Reporting and Governance
Expect deliverables such as:
- Incident summaries
- Executive dashboards
- Operational reports
- Compliance evidence
- Regular service reviews
- Recommendations tied to measurable objectives
What Are the Benefits and Risks of Outsourcing a SOC?
Benefits
- 24/7 monitoring without recruiting every role
- Specialized analysts, threat intelligence, and incident response experience
- Fewer after-hours gaps, less analyst burnout, and less dependence on one or two employees
- Less upfront investment, since staff and infrastructure are shared
On burnout, Sophos found that 76% of respondents experienced cyber fatigue at least occasionally in the prior year.
Treat cost-savings claims carefully. No credible market-wide figure shows outsourcing is always cheaper. A Forrester study commissioned by BlueVoyant modeled a 210% ROI for one composite organization, but that is a vendor-commissioned case, not a benchmark. Build your own total-cost comparison covering salaries, tools, training, and turnover.
Compliance Support
A managed SOC can supply log collection, documented response procedures, incident records, and reporting that map to HIPAA, PCI DSS, SOC 2, ISO 27001, and NIST. PCI DSS Requirement 10 covers logging and monitoring, for example, and SOC 2 CC7 covers anomaly monitoring and incident response. But outsourcing alone doesn't make you compliant.
Risks to Manage
- Reduced direct control
- Delays from unclear approvals
- Data-sharing and onboarding exposure
- Vendor lock-in
- Alerts delivered without real investigation
- Provider concentration risk: CISA has warned that a compromised service provider can expose many customers
Protection also depends on your telemetry quality, asset visibility, business context, and willingness to act on recommendations.
Outsourced vs. In-House vs. Hybrid
| Factor | Outsourced | In-House | Hybrid |
|---|---|---|---|
| Control | Lower | Highest | Shared |
| 24/7 coverage | Included | Costly to staff | Provider covers off-hours |
| Hiring burden | Low | High | Moderate |
| Customization | Varies | Highest | High |
| Knowledge retention | Mostly with provider | Internal | Split |
| Scalability | Fast | Slow | Moderate |
How the models typically fit:
- Mid-market with a small team: outsourced or hybrid, because round-the-clock staffing isn't realistic.
- Enterprise with an established SOC: co-managed, adding capacity, hunting, or off-hours coverage.
- Regulated organization: outsourced or hybrid with documented oversight, clear evidence trails, and audit rights.
How to Choose an Outsourced SOC Provider
Scope and Responsibility
Ask whether the provider delivers monitoring only, MDR, investigation, containment, remediation coordination, hunting, forensics, or compliance support. Require a responsibility matrix showing what the provider, IT, security leadership, legal, and business owners each do during a suspected incident.
People and Experience
- Assess analyst experience, escalation tiers, and certifications
- Confirm access to hunters, responders, and engineering support
- Verify staffing continuity and holiday coverage
- Require experience in your industry and environment (healthcare, higher education, manufacturing, OT, cloud, BYOD)
Integration
Confirm support for your SIEM, EDR, identity, cloud, network, and email tools, plus log ownership, retention, and API access. Ask whether the provider requires proprietary tools or supports bring-your-own-stack. For legacy or OT systems, confirm they won't apply unsuitable IT containment.
Response Authority and Service Levels
Document these items in the agreement:
- Monitoring hours and severity definitions
- Notification channels and escalation contacts
- Response targets and approval requirements
- Emergency authority and evidence handling
- Regulatory notification duties
Benchmarks are thin. Sophos publishes vendor-reported figures (mean time to detect of 1 minute, mean time to respond of 12 minutes), but these are vendor-specific metrics, not industry averages or SLAs. Negotiate targets and ask how timeliness, alert quality, investigation completeness, recurring incidents, and coverage gaps are reported.
Trust, Privacy, and Pricing
Review these controls and terms:
- Encryption, privileged access, and personnel screening
- Subcontractors, data location, and log retention
- Breach notification, business continuity, and audit rights
- Attestations and any SOC 2 report (confirm Type 2, plus system, period, and exclusions)
Pricing drivers include users, endpoints, log volume, retention, cloud accounts, environments, incident response, onboarding, and out-of-scope work. Ask about fees to export historical logs or exit.
DeepSeas as an Example
DeepSeas positions its CyberFusion SOC within a broader model covering MDR, threat intelligence, offensive security, strategic advisory, and governance, risk, and compliance. It states 24/7 monitoring, support for existing tools such as Splunk and Sentinel, customizable combinations of technology and people, and coverage across IT, cloud, OT, mobile, and BYOD.
DeepSeas Complete is sized by headcount rather than data volume and targets organizations with 500 to 5,000 employees.
The company cites nearly 30 years of experience and ISO Lead Auditor-certified specialists. Its Frost Radar Leader positioning and Frost & Sullivan award appear on its own pages, and its Gartner "top 40" attribution traces to a third-party list rather than a Gartner ranking. Treat all of this as due-diligence context, not a guarantee of outcomes. Verify each claim and ask for references.
How to Plan a Successful SOC Outsourcing Transition
Establish the Baseline
Inventory what the provider must protect and monitor:
- Critical assets, identities, and data flows
- Cloud accounts, endpoints, and applications
- Network segments and OT systems
- Existing tools and compliance requirements
- Business owners and current response procedures
CIS Controls on asset inventory and audit-log management are a sensible starting point.
Then name the scenarios that matter most, such as ransomware, account compromise, data theft, insider risk, or cloud misuse, so detections are prioritized accordingly.
Onboard with Control
- Sequence integrations and confirm telemetry quality.
- Test alert routing and validate access permissions.
- Document maintenance windows.
- Set a temporary escalation process for gaps during transition.
- Hand over operational context the provider needs on day one:
- Network diagrams and asset criticality
- Normal patterns and approved admin activity
- Contacts, response authorizations, and regulatory obligations
Govern After Launch
SOC outsourcing needs ongoing governance. Hold operational and executive reviews covering incidents, alert trends, response performance, coverage gaps, new assets, and open remediation.
No universal cadence exists, so agree on one. DeepSeas, for instance, describes monthly meetings, quarterly briefings, and annual program reviews.
Test escalation and containment with tabletop exercises. CISA publishes free tabletop exercise packages to start with.
Revisit detection tuning, playbooks, and access periodically, and confirm the provider still fits your risk profile and operating model.
Frequently Asked Questions
What does it mean to outsource a SOC?
An external provider performs agreed SOC functions: continuous monitoring, alert investigation, detection, response coordination, and reporting. You retain defined business and governance responsibilities.
Is outsourcing a SOC better than building one in-house?
It depends on required control, staffing capacity, coverage needs, expertise, regulation, environment complexity, and total cost. A hybrid model can balance internal ownership with external capacity.
What does an outsourced SOC monitor?
Commonly endpoints, identities, networks, email, applications, cloud workloads, and servers, and sometimes OT or mobile. Actual coverage depends on your contract and integrations.
What is the difference between an outsourced SOC, an MSSP, and an MDR provider?
An outsourced SOC describes the function. An MSSP may manage broader security services, and MDR emphasizes expert-led detection, investigation, and response.
How much does it cost to outsource a SOC?
Pricing varies with monitored assets, log volume, retention, coverage hours, response scope, integrations, and onboarding. Compare total contract cost and inclusions, not a headline rate.
How do I choose the right outsourced SOC provider?
Evaluate analyst expertise, 24/7 coverage, response authority, tool integration, industry experience, data handling, reporting, service levels, pricing transparency, references, and exit terms.
