They should reduce reliance on tacit knowledge by encoding controls, workflows and visibility into the platform itself. If continuity breaks when a key person is unavailable, the operating model is too fragile for sustained maturity.
Why Security Operations Become Fragile Around a Few Specialists
When a SOC or similar security function depends on one or two people, the issue is not just staffing shortage. The operating model is still living in tacit knowledge: undocumented triage habits, exception handling, alert tuning, escalation logic and recovery steps that only exist in a few heads. That creates brittle continuity, slow handover and inconsistent decisions when someone is unavailable.
The real weakness is that work is being executed by memory instead of by system. Mature operations make the platform carry the routine parts of the job, so the team is not forced to re-discover the same decisions during every shift change, absence or surge event. That is why SOC Guide is relevant here: the point of a stable SOC operating model is to make coverage, runbooks and handover durable rather than person-dependent.
A resilient model does not eliminate expert judgment. It makes judgment reproducible by capturing routing rules, ownership, evidence requirements and escalation thresholds in the tooling and process layer. If the organisation cannot preserve service quality when a key analyst is offline, the fragility is already structural, not just operational.
What Should Be Encoded Into the Operating Model
Start by identifying which parts of the workflow are truly discretionary and which are merely unspoken. Alert classification, enrichment sources, approval gates, containment triggers, exception handling, reporting and shift handoff are the first places to remove dependency on tribal knowledge. Once these steps are explicit, the team can scale, train and audit them without relying on a single subject-matter expert.
This is also where automation should be used carefully. The aim is not to automate away accountability, but to make the default path observable and repeatable. A useful design is to let the platform propose, route and record while analysts retain authority over the high-consequence decision points. The operational benefit is that the organisation can survive absence, turnover and peak load without losing control of the process.
For teams building or modernising a SOC, the best companion reference is the Security Operations Metrics Guide, because once work is encoded, you can measure whether the model is actually reducing dependence on individual operators.
External guidance from NIST Cybersecurity Framework 2.0 is useful here because the governing question is whether security work is repeatable, owned and recoverable, not just whether incidents are being handled by capable people.
How to Tell Whether the Team Is Still Too Person-Dependent
The clearest indicator is failure under absence. If a routine queue slows, detection quality drops, or escalations become inconsistent when one specialist is out, then the function has not been operationalised enough. Another warning sign is when leadership cannot explain how decisions are made without naming specific individuals instead of roles, runbooks or system logic.
It is also worth checking whether the team can onboard a new analyst without long shadowing. If performance depends on learning hidden shortcuts from a veteran, then the organisation has not captured enough of the operating model in a durable form. That creates continuity risk even when headcount appears adequate on paper.
Where organisations are rebuilding the function with more automation, the AI SOC Guide is useful for distinguishing real workflow support from fragile automation that only works while a particular expert is supervising every step. It helps teams decide where machine assistance is safe and where human approval must remain mandatory.
Risk and Threat Considerations
Concentration in one or two specialists creates both operational fragility and security exposure. An attacker does not need to compromise the whole team if the environment depends on a tiny number of people who understand the detection logic, exceptions and recovery steps. Loss of availability, insider departure, burnout or targeted social engineering can all produce a control gap at the same time.
Failure mechanism: Critical knowledge stays tacit, so when the specialist is absent or pressured, the organisation cannot reproduce the same triage, containment or recovery decisions quickly enough. The resulting gap may also delay detection of misuse, let stale exceptions persist, or leave an adversary with a longer window before response.
Impact: Security operations become harder to sustain, harder to audit and easier to disrupt. The organisation may experience slower incident handling, inconsistent escalation, weaker evidence retention and a higher chance that compromised assumptions remain embedded in the process.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
CIS Controls v8, NIST CSF 2.0 and NIST SP 800-53 Rev 5 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| CIS Controls v8 | CIS-5 — Account Management | Reducing key-person reliance requires defined ownership and recoverable operational access. |
| Recommendation — Formalise operational ownership so routine security work is not trapped with a few specialists. | ||
| NIST CSF 2.0 | GV.RR-01 — Roles, Responsibilities, and Authorities Are Established and Coordinated | This subject is about fragile responsibility concentration and unclear operational ownership. |
| PR.AA-05 — Identities Are Managed, Authenticated, and Authorized | Security operations depend on controlled access to tools, consoles and response actions. | |
| RC.RP-01 — Recovery Plan Is Executed During or After an Incident | Continuity breaks when recovery and handover depend on a single person. | |
| Recommendation — Assign clear roles and backup authorities for core security operations tasks. Ensure operational access is role-based and transferable without depending on one analyst. Document and rehearse recovery so the function can continue during staff absence. | ||
| NIST SP 800-53 Rev 5 | PL-8 — Information Security and Privacy Architecture | Encoding workflows into the platform is an architecture question, not just staffing. |
| Recommendation — Build repeatable security workflows into the operational architecture. | ||
Practitioner Guidance
What to prioritise: Capture the highest-risk decisions first, especially those that affect containment, escalation and exception handling. Those are the steps most likely to fail when only one specialist knows the real process.
What to verify: Test whether someone outside the core experts can run the workflow, explain the decision path and recover the service after an absence. If they cannot, the model is not yet resilient.
What good looks like: The team can handle normal volume, hand over shifts, and respond to incidents using documented logic, not oral history. The specialists should be improving the system, not functioning as the system.
Practitioner takeaway: Mature security operations are designed so expertise raises the quality of decisions, but does not become the sole mechanism that keeps the function alive.
Related resources from NHI Mgmt Group
- How should organisations balance supply chain speed with security when digital operations depend on remote control systems and internet-based processing?
- Should organisations use one authoritative graph or separate data copies for security operations?
- How should security teams prioritise NHI remediation in cloud environments?
- How should security teams govern non-human identities at scale?