The UK Government’s Cyber Security Breaches Survey 2025 found that 43% of UK businesses identified a cyber security breach or attack in the previous 12 months. The figure rose to 67% among medium-sized businesses. Verify these figures against the final published survey before publication.
A managed Security Operations Centre (SOC) can help organisations monitor security activity, investigate alerts and create records that support governance and compliance. It does not make an organisation compliant by itself. The practical question is whether the service delivers the monitoring, expertise, evidence and response capability the organisation needs at a sustainable cost.
For teams weighing outsourced security operations against internal capability, CyberOne’s guide to the strategic cost of building an in-house SOC can help clarify the decision. Relevant costs include staffing, technology, training, management, out-of-hours coverage and the operational effort required to maintain the service.
Response time matters, but a headline service-level agreement (SLA) tells only part of the story. Establish whether the clock measures alert acknowledgement, investigation, escalation or containment. Also clarify what happens after the target is met.
An SLA should define priority levels, response targets, escalation contacts and responsibilities. Your incident plan should establish who can authorise sensitive actions, such as isolating an endpoint or disabling an account. The provider should also explain what information it needs from your organisation before taking action.
These responsibilities should align with the organisation’s wider incident process. CyberOne’s Essential Guide to Incident Response provides further context on preparing for and responding to security incidents.
Do not assess performance on response time alone. Ask how reports capture detection, investigation findings, actions and follow-up. A well-defined operating model should establish which events the provider monitors, who investigates suspected incidents, who communicates with internal stakeholders and who can approve containment.
These decisions are especially important when business-critical systems are involved.
Yes, but within clear limits.
A managed SOC can provide records of monitoring, alerts, investigations and incident handling. Those outputs can contribute to an organisation’s evidence base while internal teams retain responsibility for governance, risk ownership and the wider control environment.
Security standards and compliance obligations extend beyond SOC operations. A provider may supply evidence that alerts were monitored or incidents were investigated, but it cannot demonstrate that every relevant control is appropriately designed and operating effectively.
Before signing a contract, agree reporting formats, retention periods, evidence requirements and responsibilities. If compliance is a major objective, map expected SOC outputs against relevant controls so the organisation knows what the service will provide and where internal ownership remains necessary.
CyberOne’s guide to choosing a Microsoft Managed SOC in the UK provides additional considerations for organisations evaluating a Microsoft-focused security operations partner.
Continuous security operations should involve more than collecting alerts outside business hours. Assess how the provider monitors activity, triages detections and escalates credible threats when the internal team is unavailable.
Security tools generate signals that still require context. An unusual sign-in, endpoint event or cloud action can mean different things depending on the account, device, application and surrounding activity.
Ask how the provider handles alert prioritisation, false positives, out-of-hours escalation, investigation handover, containment recommendations and post-incident reporting.
For organisations built around Microsoft technologies, assess how the service connects with existing security platforms. A managed Microsoft Sentinel service may be relevant where an organisation needs support with monitoring, analytics, investigation and incident workflows.
Whatever technology is used, responsibilities must remain clear. Confirm who investigates, who communicates with the organisation and who can approve containment when business-critical systems are involved.
Monitoring and threat hunting perform related but different roles. Monitoring helps teams assess security events and alerts, while threat hunting allows analysts to investigate suspicious patterns that may not have produced a standard detection.
Threat hunting adds a proactive layer. Analysts can investigate a defined hypothesis across relevant telemetry and use their findings to inform future detection. This may expose gaps in logging, alert logic or coverage that routine monitoring has not identified.
This capability needs to fit the wider security operations toolset. CyberOne’s guide to five essential tools for today’s modern SOC provides additional context on the technologies supporting modern security operations.
Ask how hunts are initiated, which data sources analysts can access, how often hunts are performed and whether findings influence detection and response. Confirm whether threat hunting is included within the core service or charged separately.
A SOC becomes more valuable when monitoring connects directly with investigation and incident handling.
Managed detection and response (MDR) extends that operating model by combining security technology with analyst investigation and response. Depending on the scope, the provider may investigate suspicious activity, recommend containment, coordinate response actions or support the customer’s internal incident team.
CyberOne’s Managed Extended Detection & Response UK guide provides further context on the MXDR operating model.
Assess how the service handles the transition from signal to action. Confirm which activities are performed by the provider and which remain with the customer. The objective is not to outsource responsibility for security. It is to ensure monitoring can translate into timely investigation and appropriate action.
Start with the environment and intended outcomes rather than a generic checklist. CyberOne’s Outsourced SOC UK Strategic Buying Guide & Roadmap for 2026 provides a related buyer-focused resource for organisations considering an outsourced security operations model.
Define which systems require monitoring, what the internal team can manage and which capabilities need specialist support. Document reporting expectations, escalation responsibilities, response authority and the evidence required for governance.
Evaluate providers against:
The right service should reduce operational pressure without introducing uncertainty about ownership or response.
Define which systems need monitoring, what the internal team can manage and where specialist support could strengthen the operating model.
Then document reporting expectations, escalation responsibilities, response authority and the evidence required for governance. This makes it easier to compare providers consistently and exposes gaps hidden by headline pricing.
A managed SOC should reduce operational pressure without creating uncertainty about ownership. The right model supports resilience by providing clearer visibility, defined escalation and access to expertise when an incident requires investigation.