By Mike Chen, Director of IT Solutions · January 22, 2025

Outsourced Cybersecurity Team vs Internal Staff: The Honest 2025 Comparison

TL;DR: For 50 to 200 employee companies with a SOC 2, HIPAA, or CMMC audit ahead, an outsourced MDR or MSSP wins on cost and coverage speed. From 200 to 500 employees with an existing IT lead, a hybrid model (one internal security owner plus outsourced SOC) beats both pure options. Full in-house teams only make sense above roughly 500 employees.

Why This Decision Is Harder Than Vendor Content Admits

Most comparison articles line up a mid-level analyst's base salary against an MSSP quote and call it a day. That's the wrong math. I've run this exercise weekly for the past three years with IT Directors in Nashville, Charlotte, and Columbus, and the sticker-price comparison always misses at least half the real cost on both sides.

Hidden in-house costs pile up fast. Tool licensing across a SIEM, EDR, and vulnerability scanner. Coverage gaps at night, on weekends, and during PTO. Six-month hiring cycles. Cert renewals. Turnover churn that resets tribal knowledge every 18 months.

Hidden MSSP costs are just as real. Contract lock-ins that run three years. Scope creep charges when you add a new SaaS app. Data portability problems on exit. And the small-fish problem, where a 150-person client sits behind a 5,000-seat enterprise in the escalation queue.

Frame this as a total cost of ownership problem, not a headcount problem. That's the only way you get an answer that survives an audit.

The talent side matters too. According to the ISC2 2023 Cybersecurity Workforce Study, the global cybersecurity workforce gap sits at roughly 4 million unfilled roles. CyberSeek data shows US employers taking well over 100 days to fill senior security analyst roles in most markets. You are not competing with your MSSP for talent. You're competing with Amazon, JPMorgan, and every Fortune 500 SOC.

Full TCO Breakdown: The In-House Security Team

Two analysts is the honest floor for anything resembling real coverage, and two still won't get you to 24/7.

Here's what a bare-minimum internal security function costs at a 150-person company in 2025:

• Senior Information Security Analyst salary: The US Bureau of Labor Statistics puts the 2023 median at $120,360, and in Nashville, Charlotte, and Denver we're seeing offers land between $130k and $160k for someone with real IR experience.
• Junior/Tier 1 analyst: $75k to $95k.
• Benefits loading: roughly 30% on top of base.
• Training and certifications: SANS GIAC courses run $8,000-plus per seat per year. Two analysts, two courses each, and you're at $30k+ before conference travel.
• Tool stack for 150 users: CrowdStrike Falcon Pro sits around $8 to $15 per endpoint per month. Microsoft Sentinel bills per GB ingested (roughly $2.76/GB pay-as-you-go on the Azure pricing page), which for a 150-user shop can land anywhere from $30k to $80k annually depending on log verbosity. Tenable.io Nessus Pro adds another $4k to $6k.
• Recruiting fees: typically 20% to 25% of first-year salary if you use an agency.

Add it up and you're at $350k to $500k a year in fully loaded cost, and you still don't have overnight or weekend coverage. Two full-time employees can't cover 24/7/365. Full stop.

That coverage gap directly threatens SOC 2 Trust Services Criterion CC7.2, which requires ongoing monitoring of security events. In-house teams regularly fail this control during audits because their logs show no eyes on glass between midnight and 6am. HIPAA §164.308(a)(1)(ii)(D) makes similar demands around information system activity review.

Also plan for bench time. When your two analysts sit inside a general IT team, they'll get pulled into printer tickets, laptop rebuilds, and onboarding. We regularly see 30% to 40% of a security analyst's week evaporate on non-security work.

Full TCO Breakdown: Outsourced MSSP or MDR

MDR contracts usually price per user or per endpoint per month. Expect $50 to $150 per user per month for a real MDR service, depending on scope and data volume.

Named vendors, roughly:

• CrowdStrike Falcon Complete (their fully managed MDR tier): typically $15 to $25 per endpoint per month at mid-market volumes, per Gartner Peer Insights reviews. Best fit if you want the same team detecting and remediating in one pane.
• SentinelOne Vigilance Respond: similar range, slightly cheaper on average. Strong on autonomous EDR response.
• Arctic Wolf Managed Detection and Response: sold as an all-you-can-eat concierge model, usually priced per user. Good fit for companies without any internal security engineering muscle.

What's typically included: SIEM correlation, EDR alert triage, firewall log ingestion, monthly vulnerability scans, and a named Concierge Security Team or equivalent. What's typically excluded: annual penetration testing, compliance consulting, IR retainer hours beyond a small block, and custom detection engineering. Budget those separately.

The small-fish problem is real. Large MSSPs triage by revenue, and a 100-person client can wait hours for Tier 2 escalation on a Sunday. Before you sign, demand the documented escalation path in writing: named Tier 2 contact, coverage hours, and MTTR guarantee for P1 incidents. If they won't put it in the contract, walk.

Data portability on exit is the other trap. Ask exactly what happens to your SIEM logs, your detection rules, and your asset inventory when the contract ends. Insist on export in a standard format (JSON or CEF) with 90 days of retained access post-termination.

If you're covered by HIPAA, the MSSP must sign a Business Associate Agreement under 45 CFR §164.308(b). Many providers don't offer BAAs by default on their commercial tier, so ask before the RFP.

For a deeper cost comparison see our managed security services vs in-house TCO breakdown.

The Hybrid Model We Recommend Most Often

For most mid-market companies I talk to, the answer isn't pure in-house or pure outsourced. It's one internal security lead plus an outsourced SOC.

The structure:

• Internal: one security lead. This can be a vCISO on retainer, an existing IT Director with security added to their scope, or a dedicated Security Manager. They own policy, compliance mapping, vendor accountability, and insider-context decisions.
• Outsourced: 24/7 SOC coverage, SIEM tuning, EDR response, threat intelligence ingestion, and vulnerability management execution.

Practical staffing ratios we see work:

• 50 to 150 employees: 1 internal lead (often part-time vCISO) + full MDR.
• 150 to 300 employees: 1 full-time Security Manager + MDR + a pen test retainer.
• 300 to 500 employees: 2 to 3 internal (manager plus one or two engineers) + outsourced SOC for overnight and weekend coverage.

Why hybrid wins on insider threat. External SOCs see logs; they don't see the HR conversation about the sales rep who just got put on a PIP, or the engineer who was passed over for promotion. The Verizon 2024 Data Breach Investigations Report attributes a meaningful share of incidents to internal actors and privilege misuse. Behavioural anomalies and access misuse need organisational context an outsourced team can't have.

Why hybrid wins on tool expertise. MDR providers run the same SIEM/EDR stack across hundreds of customers. They tune detection rules faster than any in-house team of two ever will.

Hybrid also cleanly satisfies SOC 2 CC7 monitoring and HIPAA §164.308(a)(1) risk analysis, without you needing to build a full internal team. See our SOC 2 readiness playbook for the audit-side prep.

Decision Matrix: Which Model Fits You Right Now

A few thresholds worth calling out. If your SOC 2 Type II audit is within six months and you have no monitoring stack, outsource immediately and build hybrid later. There's no time to hire. Type II audit fees alone run $30k to $80k depending on scope (AICPA-affiliated firms publish ranges in this band), and readiness from scratch typically takes 4 to 6 months per published benchmarks from Vanta, Drata, and Secureframe.

CMMC Level 2 needs internal ownership. The System Security Plan required under 32 CFR Part 170 is not something an MSSP can own for you. You need a named responsible person inside the org.

PCI-DSS Requirement 10 on log monitoring maps to whatever SIEM you use. In hybrid or MSSP models, confirm the provider will produce PCI-ready evidence, not just alerts.

If you're not sure where you sit on this matrix, that's exactly the free audit conversation we run.

What to Demand in an MSSP Contract Before You Sign

• Written SLA on MTTD and MTTR. Sub-4-hour MTTR for P1 incidents is a reasonable ask. Given that the IBM Cost of a Data Breach Report 2023 puts average time to identify and contain a breach at 277 days, an MSSP that won't commit to hours-not-days on P1 isn't worth the contract.
• Named escalation path. Tier 2 and Tier 3 contacts, hours, and phone numbers in the contract.
• Data portability clause. Full log, rule, and asset export on termination.
• BAA if HIPAA applies. Non-negotiable.
• Pen test scope. Most MDR contracts explicitly exclude penetration testing. Budget $15k to $40k a year for a mid-market external pen test. Details in our penetration testing costs guide.
• Geographic IR. If you need someone on-site after a ransomware event, confirm regional staff. We publish our own Friday-morning on-site IR commitment, and it matters more than any glossy dashboard.

For the full vendor evaluation framework, use our outsourced SOC services buyer's guide and our checklist on how to hire a managed cybersecurity provider. Nashville and Middle Tennessee buyers can also see our regional Cybersecurity Services Nashville page for local pricing context.

If Your Audit Is Coming

If you're within 90 days of a SOC 2 or HIPAA audit and don't know where you stand, or you're weighing whether to build internal security capacity or outsource it, book a free 30-minute audit with Mike. We'll tell you exactly which model fits your headcount, compliance burden, and budget before you sign anything.

FAQ

Is outsourcing cybersecurity a compliance risk under HIPAA or SOC 2? No, provided the vendor signs a BAA (HIPAA §164.308(b), which requires a written business associate agreement for anyone touching ePHI) and you retain evidence of oversight. SOC 2 auditors will ask who owns each control; an outsourced provider can execute controls, but you must own accountability internally.

What is the minimum internal security headcount before an MSSP stops making sense? Around 5 to 8 dedicated security FTEs, typically at 500+ employees or in heavily regulated sectors. Below that, the coverage math and tool licensing costs don't work out.

Can an MSSP fulfil CMMC requirements on its own? No. CMMC Level 2 requires a System Security Plan under 32 CFR Part 170 with a named internal owner, plus ongoing assessment activity that a contractor cannot solely delegate. An MSSP can execute technical controls; internal accountability is mandatory.

What happens to our security data if we switch MSSP providers? Whatever your contract says. Without a data portability clause you may lose historical SIEM logs, tuned detection rules, and asset inventory. Negotiate a 90-day post-termination export window in JSON or CEF format before signing.

How do we handle insider threat detection with an outsourced team? Keep an internal owner who has HR context. Feed the SOC user behaviour analytics signals but reserve investigation of HR-flagged risk (terminations, PIPs, access anomalies) for someone inside the company.

What's a realistic monthly cost for MDR coverage at 100 employees? Expect $6,000 to $15,000 per month all-in, depending on log volume, endpoint count, and included compliance reporting. Anything under $4,000 monthly for real 24/7 MDR should trigger a scope-and-SLA review before you sign.