Should teams prioritise explainability over more automation in the SOC?

What explainability changes in a SOC that relies on automation

Explainability is not a nice-to-have once automation begins shaping triage, correlation, suppression, or escalation. It gives analysts enough context to trust a recommendation, challenge it when it looks wrong, and explain the outcome to incident commanders or auditors. Without that visibility, automation becomes a black box that teams either ignore or overrule.

In practice, explainability has three jobs: it shows why the system reached a conclusion, what evidence supported that conclusion, and how confident the output should be treated. That is especially important in the SOC because decisions are time-sensitive and often under uncertainty. A useful automated recommendation should be reviewable at the level of signal, logic, and consequence, not just at the level of a final score.

Explainability also changes how teams operationalise automation. When an alert is enriched by SANS Security Resources-style detection and incident-handling practices, analysts can see whether the machine is accelerating a decision or simply hiding the steps that would normally be checked by hand. That difference matters because the more an SOC delegates, the more it must preserve the ability to reconstruct why a path was taken.

Why more automation without explainability degrades SOC performance

High automation can improve throughput, but it also creates a control problem if the team cannot inspect the reasoning behind machine output. In that situation, analysts spend more time validating the system than using it, and the SOC loses the speed advantage it was trying to gain. The operational failure is not only false positives or false negatives, but loss of confidence in the workflow itself.

Explainability is also what makes automation resilient under pressure. During an active incident, teams do not want a tool that merely says “block,” “quarantine,” or “escalate”; they need to know what evidence triggered that action and whether the same pattern has appeared before. MITRE D3FEND is useful here because it encourages defenders to think about defensive actions and the mechanisms behind them, not just the end-state response.

There is a second-order effect too. If a system cannot justify its recommendations, teams will either reverse valid actions too often or allow unverified actions to stand because no one has time to investigate every decision. That creates unstable operations, inconsistent escalation, and avoidable churn between analysts and automation owners. A SOC that cannot explain its own automation will usually see human work re-enter the loop in the most expensive way possible.

How to balance explainability, automation, and analyst trust

The right balance is usually not “less automation,” but “automation with bounded decision rights.” Use automation where the action is reversible, the evidence is visible, and the rationale can be reviewed quickly. Reserve the highest-confidence automated actions for low-ambiguity cases, and require richer explanation as the blast radius of the action increases.

For incident handling, a strong pattern is to make every automated decision answer three questions: what was observed, what rule or model produced the decision, and what action will follow if the recommendation is accepted. That gives analysts a fast way to validate the output without rebuilding the analysis from scratch. It also helps during post-incident review, when the team needs to show why an alert was suppressed, escalated, or correlated with another event.

Teams should also treat explainability as an adoption control. The best automation in the SOC is the automation people continue to use under stress, not just in demos. If analysts cannot understand a recommendation in the moment, they will build workarounds, duplicate workflows, or default to manual handling. FIRST incident response standards are a useful reference point because they reinforce disciplined, reviewable response practice rather than opaque shortcutting.

Risk and Threat Considerations

Automation without explainability creates a control blind spot: bad logic can scale just as quickly as good logic. In a SOC, that can mean suppressed detections, overconfident triage, or automated containment that analysts do not trust enough to leave in place. The risk grows as automation handles more volume, because a single opaque decision pattern can affect many cases at once.

Failure mechanism: The system produces outputs that are operationally useful but not inspectable enough for analysts to validate, correct, or defend, so the team either overrides the tool or accepts it without proper review.

Impact: Detection quality degrades, response becomes inconsistent, and the SOC absorbs extra manual work to compensate for uncertainty. In the worst case, opaque automation hides a systematic error until it has affected multiple incidents.

Practitioner Guidance

What to prioritise: Prioritise explainability wherever automation can influence triage, containment, suppression, or escalation decisions. The more consequential the action, the more evidence and rationale the analyst should be able to see in one place.

What to verify: Verify that each automated outcome can be traced back to observable inputs, a clear decision path, and an accountable owner. If the team cannot reconstruct why the system acted, the automation is not yet operationally mature.

Common mistake: Treating “more automated” as automatically “more efficient.” In SOC operations, opaque automation often shifts effort from handling alerts to challenging the automation itself.

Practitioner takeaway: The goal is not to minimise human involvement at all costs, but to automate only as far as the team can still understand, challenge, and defend the decision under incident pressure.

Related resources from NHI Mgmt Group

• Should teams prioritise explainability or coverage when choosing an AI SOC platform?
• Should SOC teams prioritise consolidation or new automation features first?
• When should security teams prioritise scoped autonomy over full automation?
• When should security teams prioritise lifecycle automation over ad hoc access requests for external users?