Cyber threats do not follow office hours.
For organisations that need continuous protection, genuine 24/7 security coverage means more than keeping a security dashboard open overnight. It requires the right combination of people, processes, technology and response capability, whether that is delivered in-house, through a co-managed model or by an external managed detection and response (MDR) provider.
For many organisations, the question is not simply whether security monitoring matters. It is how much coverage is appropriate, what that coverage needs to achieve and how it can be delivered sustainably.
A 24/7 SOC is not automatically the right answer for every organisation, and outsourcing is not necessarily the right answer either. The appropriate model depends on your threat profile, the systems and data you need to protect, your existing security capability, your available resources and the level of risk your organisation is prepared to accept.
This guide looks at what genuine 24/7 security operations involve, the different ways organisations can provide them, and the practical questions IT and security leaders should consider before deciding how to proceed.
Why 24/7 security coverage matters
Your organisation may operate from 9 to 5. Your security risk does not.
Cloud services continue running overnight. Employees continue accessing systems remotely. Automated processes continue exchanging data. Internet-facing systems remain exposed. Security controls continue generating telemetry whether anyone is looking at it or not.
A security incident that begins at 2am does not become less serious because the security team is due back at 9am.
That does not mean every organisation needs a staffed SOC operating around the clock. The NCSC's guidance on building a SOC takes a risk-based approach, recognising that organisations have different threat profiles, assets and resources.
The important question is whether your operating model provides an appropriate level of monitoring and response for the risks you face.
Out-of-hours activity can present a particular challenge. Cyber security authorities have documented ransomware activity taking place during weekends and public holidays, when organisations may have fewer defenders and IT personnel available. NCSC guidance also notes that attackers may carry out actions outside normal office hours to reduce the likelihood of intervention.
For organisations with critical systems, valuable data or limited internal security resources, continuous monitoring can therefore form an important part of the wider security strategy.
What does 24/7 SOC coverage actually mean?
The phrase "24/7 monitoring" can sound more comprehensive than it really is.
Having security tools running continuously is not the same as having continuous security operations. When an alert is generated, someone needs to be able to assess it, investigate it, determine whether it represents a genuine threat and take appropriate action.
A useful way to think about the process is:
Detect → Triage → Investigate → Respond → Learn
Detection identifies potentially suspicious activity.
Triage determines whether an alert warrants further investigation.
Investigation adds context and establishes whether the activity represents a genuine threat.
Response contains or disrupts the threat where appropriate.
The final stage is understanding what happened and using that knowledge to improve the organisation's defences.
This is why technology alone does not create a 24/7 security operation. The tools need to be supported by people and processes capable of turning security data into meaningful action.
The three ways to provide 24/7 security operations
There are three broad approaches organisations can take.
Build and operate an in-house SOC
Building a SOC internally gives an organisation a high degree of control over its people, processes, technology and priorities.
An established security team can develop detailed knowledge of the environment and tailor detection capability around the organisation's systems and risks. For larger organisations with sufficient resources, an internal SOC can provide a high level of control and organisational knowledge.
The challenge is sustaining genuine 24/7 coverage.
A team that provides security monitoring during normal working hours is very different from one operating continuously. Staff need to work across shifts or participate in an out-of-hours rota, while recruitment, training, management and absence cover all need to be considered.
There is also the technology and engineering capability required to support the operation, including security monitoring, endpoint protection, detection engineering, threat intelligence and incident response.
A SOC is not something that can simply be built and left unchanged. Threats, technologies and business requirements evolve, so detections, processes and skills need to evolve with them.
Use a co-managed or hybrid SOC
A co-managed model combines internal security capability with external support.
An organisation might retain responsibility for its own security team and key decisions while an external provider extends monitoring outside normal working hours, supports alert triage or provides specialist expertise.
This can be useful where an internal team already has strong knowledge of the organisation but does not have the resources to maintain complete 24/7 coverage.
The responsibilities need to be clear from the outset. That includes who investigates alerts, who can take containment action, who needs to be contacted when an incident is confirmed and what happens when the internal team is unavailable.
Use a managed detection and response service
A third option is to use an MDR provider to deliver detection and response externally.
MDR combines security technology with specialist analysts and established monitoring, investigation and response processes. It can give organisations access to continuous security operations without requiring them to recruit and maintain every role internally.
This can be particularly relevant to organisations with smaller IT or security teams that still need continuous detection and response.
MDR does not mean handing security over and walking away. A provider needs to understand the organisation, its systems, priorities and risk. Responsibilities, escalation procedures and response actions should be agreed in advance and reviewed as the environment changes.
What does a 24/7 SOC actually need?
Whatever operating model is chosen, several components need to work together.
Does compliance require 24/7 security monitoring?
There is no blanket UK rule stating that every organisation must operate a 24/7 SOC.
Cyber Essentials provides a baseline set of technical controls, but it does not require organisations to operate a round-the-clock SOC.
ISO/IEC 27001 establishes requirements for an information security management system, including monitoring and evaluation of information security performance. It does not prescribe a specific SOC operating model or universally require 24/7 monitoring.
The UK's NIS Regulations apply to organisations within their scope and require appropriate and proportionate measures to manage security risks and minimise the impact of incidents. They do not amount to a blanket requirement for every organisation to operate a 24/7 SOC.
NIS2 should also be treated carefully in a UK context. It is an EU directive rather than UK domestic law, so organisations need to understand which UK legislation and sector-specific requirements actually apply to them.
There may also be contractual, insurance, customer or sector-specific requirements that make continuous monitoring appropriate or expected.
Compliance can therefore form part of the decision, but it should be considered alongside the organisation's actual risk and security requirements.
How do you know whether your organisation needs 24/7 coverage?
Determining your round-the-clock readiness isn't a matter of ticking an administrative compliance box. It requires a cold, practical look at how your business functions when your core IT staff are offline, out of office, or asleep.
Before committing capital to an internal build or an outsourced partnership, use our interactive self-audit matrix below to evaluate your current defense tracks and isolate your actual visibility windows.
Choosing the right 24/7 security model
There is no single operating model that suits every organisation.
An established internal SOC can provide deep organisational knowledge and control. A co-managed approach can extend an existing team without replacing it. An MDR service can provide access to specialist expertise and continuous monitoring without requiring an organisation to build every component of a SOC itself.
The decision should come back to the same fundamentals:
- What risks are you trying to manage?
- What capability do you already have?
- Where are the gaps?
- What would it take to close those gaps internally?
- Which responsibilities do you want to retain?
- What level of continuous coverage does your organisation actually require?
The right model is one that provides the necessary capability and can be sustained as the organisation, its technology and its risks change.
How Socura approaches 24/7 MDR
Socura provides Managed Detection and Response for organisations that need continuous detection and response capabilities without necessarily building the entire operation internally.
Our MDR service combines UK-based security analysts with security technology, threat intelligence, ongoing detection engineering and proactive threat hunting.
The service continuously monitors the customer's digital estate, investigates alerts and responds to genuine threats. Where appropriate, automated actions can help contain and disrupt attacks, while incidents requiring customer attention are communicated through our Incident Management Portal.
We work as an extension of the customer's existing team rather than treating MDR as a black box. That starts with understanding the environment during onboarding and continues through configuration, tuning, service reviews and ongoing improvement.
The result should not simply be more alerts.
It should be greater visibility, faster response, and a clearer understanding of your security environment - keeping your organisation calm, secure, and completely focused on the work that matters most, around the clock.
24/7 security should bring clarity, not complexity
The decision to provide round-the-clock security coverage can initially feel complicated. There are people to consider, technologies to evaluate, processes to define and costs to understand.
But the underlying question is simple.
When something important happens outside normal working hours, what happens next?
If you have a clear, tested and sustainable answer, you have the foundations of an effective security operation.
For some organisations, that will mean strengthening an internal SOC. For others, a co-managed model may extend existing capability. An MDR service can provide another route to continuous detection and response without requiring the organisation to build every element internally.
The objective is not to build a SOC simply because 24/7 sounds impressive.
It is to make sure your organisation has the right capability in place when it matters.
That is what genuine 24/7 SOC readiness looks like.
Frequently asked questions
Is a 24/7 SOC worth it for a small or medium-sized business?
It can be, particularly where an organisation has valuable data, critical systems, significant exposure to cyber threats or limited internal security resources. However, a full 24/7 SOC is not automatically necessary for every business. The appropriate level of monitoring should reflect the organisation's risks, assets and available resources.
How much does a 24/7 SOC cost?
The cost varies significantly depending on whether security operations are provided internally, co-managed with an external provider or delivered through MDR. An in-house SOC can involve substantial staffing, technology and operational costs, while an outsourced model can provide continuous coverage without requiring the organisation to build and maintain the entire capability itself.
What is the difference between a SOC and MDR?
A SOC is the security operations capability responsible for activities such as monitoring, detection and response. MDR is a managed service that provides those capabilities through an external security provider, combining technology with specialist people and processes. An organisation can therefore operate its own SOC or use an MDR provider to deliver part or all of its security operations.
Is MDR the same as a managed SOC?
The terms are sometimes used interchangeably, but they are not necessarily identical. A managed SOC can provide outsourced security monitoring and operational capabilities, while MDR specifically focuses on managed detection and response, including the investigation and response to threats. The exact services included depend on the provider.
Can a SOC actually prevent a cyber attack?
A SOC cannot guarantee that attacks will be prevented. Its primary role is to detect and respond to malicious activity that gets past preventative security controls, helping to limit the potential impact of an incident. Effective security therefore combines prevention, detection, response and recovery rather than relying on any single layer.
What happens if a cyber attack is detected outside normal working hours?
A 24/7 security operation should have defined processes for assessing alerts, escalating genuine incidents and taking appropriate response actions at any time of day. The organisation should also have clear responsibilities and contact arrangements so that an incident does not wait until the next working day before being addressed.
Do I need a SIEM if I already have an EDR solution?
Not necessarily. Endpoint detection and response (EDR) provides visibility and detection capabilities focused primarily on endpoints, while Security Information and Event Management (SIEM) can bring together security data from multiple sources. Whether additional technology is appropriate depends on what you need to monitor, the threats you are trying to detect and the capability of your existing security controls.
What should I look for in a 24/7 SOC provider?
Look beyond the claim of 24/7 monitoring. Consider the provider's analyst expertise, detection capabilities, response processes, technology coverage, escalation procedures, reporting, onboarding approach and ability to understand your environment. It is also important to establish exactly what the provider monitors and what happens when a genuine threat is identified.
How do I know if my security monitoring is good enough?
Effective monitoring should provide useful visibility into the systems that matter, identify relevant threats and support timely investigation and response. It should also be reviewed as your environment and the threat landscape change. High alert volumes alone are not evidence of effective monitoring; detection quality and the ability to investigate meaningful signals are more important.
What is the difference between 24/7 monitoring and 24/7 response?
24/7 monitoring means security activity is being observed continuously. 24/7 response goes further by ensuring that appropriate people and processes are available to investigate and act on significant threats around the clock. Continuous monitoring has limited value if there is no effective response capability behind it.
Should a SOC monitor cloud services as well as devices and networks?
Yes, where cloud services form part of the organisation's environment or contain systems and data that need protecting. A monitoring strategy should be based on the assets and threats that matter to the organisation rather than focusing only on traditional network infrastructure. NCSC guidance recommends determining what information needs to be collected based on the systems, risks and monitoring objectives.
How long does it take to build a 24/7 SOC?
There is no standard timeframe because the scope, technology, staffing requirements and maturity of each organisation are different. Building a sustainable SOC involves designing the operating model, establishing appropriate monitoring and detection, developing processes and continually improving the capability. NCSC guidance notes that building an effective SOC takes significant investment and ongoing iteration rather than being a one-off implementation.
Is an outsourced SOC secure?
Outsourcing security operations does not automatically make an organisation more or less secure. The outcome depends on the provider's capabilities, controls, processes and understanding of the customer's environment. Organisations should assess how security data is handled, where it is stored, who has access to it, how incidents are managed and what responsibilities remain with each party.
What questions should I ask an MDR provider before signing a contract?
Ask what the provider monitors, how alerts are investigated, what response actions they can take, how incidents are escalated, who will work on your environment, how detections are tuned and how performance is reported. It is also worth asking about onboarding, data handling, service coverage, contractual responsibilities and what happens when your environment or security requirements change.
Do you need a 24/7 SOC if you already have an IT security team?
Not necessarily. An existing security team may already provide sufficient coverage, or a co-managed arrangement may extend its capabilities where there are gaps. The key question is whether your current team can sustainably provide the level of monitoring, investigation and response your organisation requires, including outside normal working hours. NCSC guidance specifically recommends considering existing IT coverage and resources when determining appropriate SOC operating hours.