The Visible Cost Is the Smallest Part
When businesses evaluate cybersecurity spending, they typically compare the licence cost of a product against the fee for a managed service. On paper, the product licence always looks cheaper. A mid-market endpoint security platform might cost £15,000-£25,000 per year in licences. A managed security engagement covering the same scope might cost £40,000-£60,000. The DIY option appears to save 50%. But licence cost is the tip of the iceberg. The ISC2 2025 Cybersecurity Workforce Study found that the average UK cybersecurity professional earns £67,000 — and there is a global shortage of 4.8 million security professionals. The true cost of DIY includes the staff to deploy, configure, monitor, and maintain the tools, which is where the economics fundamentally change.
The Hidden Costs of DIY Security
Alert fatigue is the silent killer of DIY security programmes. Gartner found that the average security team receives over 11,000 alerts per day, of which fewer than 5% require action. But triaging those 11,000 alerts to find the critical 5% requires skilled analysts spending hours every day. If your "security team" is an IT generalist with other responsibilities, the alerts are simply ignored — and the one critical alert buried in the noise is the one that becomes a breach. Tool sprawl is another hidden cost. Each product requires its own management console, its own update cycle, its own integration work. The average mid-market organisation runs 45-65 security tools, and the staff time to manage them frequently exceeds the licence costs.
- Average UK security analyst salary: £67,000 (before benefits and training)
- Alert fatigue: 11,000+ alerts/day, fewer than 5% actionable
- Tool management overhead: updates, configuration, integration
- Training costs: each tool requires certified operators
- Incident response: average cost of an unmanaged breach is 2.8x higher
What Managed Security Actually Delivers
A properly structured managed security engagement does not just outsource tool management — it provides outcomes that most organisations cannot achieve internally. A dedicated security operations team monitors your environment during business hours or 24/7, depending on risk appetite. When an alert fires at 2am, someone is triaging it before you wake up. When a new critical CVE is published, your provider is assessing your exposure within hours. When an incident occurs, you have an experienced team executing a practised playbook, not an IT generalist reading documentation for the first time. IBM's 2025 Cost of a Data Breach report found that organisations with managed security services reduced average breach costs by 37% and detected breaches 108 days faster than organisations managing security in-house.
The Decision Framework
DIY security can work for organisations with a dedicated, experienced security team of at least 3-5 people, a mature security operations programme, and the budget to recruit, retain, and train specialists in a market with a 4.8 million person global shortfall. For everyone else — which includes the vast majority of UK SMBs and mid-market companies — managed security delivers better outcomes at a lower true cost. The question to ask is not "can we afford managed security?" but "can we afford the cost of a security incident handled by a team that manages security as a secondary responsibility?" For most organisations, the answer makes the decision straightforward.
Frequently Asked Questions
How much does managed security cost for a UK SMB?
Managed security engagements for UK SMBs (50-250 employees) typically range from £3,000-£8,000 per month depending on scope, tools included, and monitoring hours. This covers tool licences, deployment, configuration, ongoing monitoring, and incident response support.
Do I lose control with a managed security provider?
No. A good managed provider gives you more visibility, not less. You retain full ownership of your data, tools, and policies. The provider operates within agreed parameters and escalates decisions to you. At Kyanite Blue, clients have full access to every dashboard and receive regular reporting on all activity.
Can I manage some tools myself and outsource others?
Absolutely. A co-managed model is common, where the organisation retains responsibility for some security functions (typically identity and access management) while the managed provider handles more specialised areas like threat monitoring, vulnerability management, and incident response.