What a 24/7 Security Operations Function Really Costs, and What You're Buying With Each Model

What Security Operations Is Actually Buying You

A community bank CFO walking into the security operations cost discussion is not buying a tool stack or a license. The CFO is funding a continuous capability. Detection of malicious activity, investigation of detected events, response coordination when events become incidents, and documentation of all three at the cadence the FFIEC framework expects.

The components are similar across models. The cost composition is materially different. The CFO who understands the composition produces a budget that matches what the bank is committing to. The CFO who sizes the budget on the visible line alone produces a commitment the bank under-funds.

That is the conversation worth having before the next contract or hiring decision lands.

The Five-Year Cost of Each Model — Where the Math Actually Lands

The first-year cost is rarely the right comparison. The five-year cost reveals what the CFO is actually committing to.

Building internally has a high first-year cost dominated by hiring (multiple analysts working in shifts to cover 24/7), training (achieving the operational maturity to detect actual threats rather than noise), and tooling deployment (the platforms the team uses, often in the seven-figure range for the deployment itself). Year two and three costs decline modestly as the team matures and tooling stabilizes. Year four and five costs stabilize at a recurring run rate including salaries, tooling renewals, training, turnover replacement, and management overhead. The five-year total at most community banks is substantial.

Buying through an external monitoring partnership has a moderate first-year cost dominated by onboarding, integration with the bank's environment, and the recurring service fee. Subsequent years run at the service fee plus modest annual increases. The five-year total is predictable and scales with the bank's environment in a way the bank can model.

A hybrid model has a moderate first-year cost that depends heavily on the boundary the bank draws between internal and external. The five-year total depends on whether the boundary holds. Banks that maintain clear ownership of specific capabilities run a hybrid that costs less than building and roughly the same as buying. Banks that drift across the boundary end up paying for both layers.

The five-year math, run honestly for a community bank in a defensible asset range, almost always favors the buy model for banks below several billion in assets, favors the build model at large scale, and favors hybrid in narrow circumstances where the bank has specific operational reasons to retain partial internal ownership.

Where Internal Security Operations Costs Hide

Across the community banks Five Nines supports, three hidden cost areas show up consistently in internally built security operations models.

The first is turnover. Security operations analysts move frequently, both within the industry and out of it. Each turnover event costs recruiting time, the productivity gap during the unfilled period, the onboarding cost for the replacement, and the institutional-knowledge loss the departing staffer carried. Banks that maintain internal teams across multiple years see these costs accumulate to a meaningful figure.

The second is training. The threat environment evolves continuously, and team capability needs to evolve with it. Banks that under-fund training produce teams whose skills lag the threat environment. The training cost is real but rarely budgeted as a distinct line item.

The third is tooling currency. The platforms the team uses require licensing renewal, version updates, integration maintenance, and periodic technology refresh. Banks that fund the team but under-fund the tooling produce capability gaps that are not visible in the salary line.

Buy models bundle these costs into the partner's service fee. The partner absorbs the turnover, training, and tooling-currency costs as part of running the partnership. Build models pay them separately.

What the FFIEC Framework Actually Expects to See

The FFIEC IT Examination Handbook does not require a specific operating model for security monitoring. It expects the bank to demonstrate adequate capability: monitoring is occurring, the monitoring covers the systems the Risk Assessment identified as in-scope, detected events are investigated on a documented timeline, incidents are responded to with appropriate escalation, and the bank's board receives reporting on the function.

Each of these is achievable in any of the three models. None is automatic in any of them.

Where banks get into trouble with examiners is not the model selection. It is the integration of the model with the bank's broader compliance program. An internal team that does not feed into the bank's incident response process produces findings. An external partnership that produces alerts the bank does not act on produces findings. A hybrid arrangement where the bank cannot describe who owns what produces findings. The model choice is upstream of the audit defense; the integration is what the audit actually evaluates.

Why "Buy Now, Build Later" Usually Costs More Than Either

A community bank CFO will hear, somewhere in the cost discussion, this argument: the lowest first-year cost is the buy model, the best long-term answer is to build, and the right path is to buy now and build later as the bank grows.

That is a false choice, and migration costs make it expensive for banks that follow it. The capabilities the bank builds late are not the same capabilities the partner provided early. Data formats, alert tuning, response runbooks, and accumulated team knowledge are partner-specific. Migrating from buy to build at the wrong size point creates a transition window where monitoring posture is weakened during the rebuild, costs run double during the overlap, and the bank's audit defense relies on an integration that is in flux.

The right framing is not whether to start cheap and grow into building. It is to choose the model that fits the bank's five-year trajectory and to commit to it long enough to extract the operational maturity the model produces. Banks that switch models more often than every five years are paying for transition rather than for security.

Three Questions That Point to the Right Security Operations Model

Three questions a community bank CFO should answer before recommending a security operations model: What is the bank's five-year asset and complexity trajectory, and where does the math on building break even with buying? What is the bank's actual incident response capability today, and how quickly does the bank need to be able to respond at 2 a.m. on a Saturday? What is the integration discipline the bank can sustain, given its current IT and compliance team?

The answers usually point to the buy model for community banks under several billion in assets, with explicit documentation of how the partner integrates with the bank's incident response process, how the FFIEC evidence flows from the partner to the bank, and how the contract terms protect the bank if the partner underperforms.

Size the Model to the Bank's Five-Year Shape

A community bank CFO sizing the security operations function is not buying a capability that stops at the contract. The CFO is funding a continuous function the regulator expects, with cost composition that varies materially by model. The right model is the one that produces the unit economics fitting the bank's five-year shape, with the operational maturity the framework examines.

If your bank has not produced a five-year cost comparison across the three models, scoped to the bank's specific environment and growth plan, that is the conversation worth having with your Tech-Operations partner before the next contract decision.

Five Nines Technology Group is a Tech-Operations partner for community banks and credit unions. Translating regulatory frameworks into operating discipline at community bank scale is where our team focuses.