Top managed security services providers: types, examples and how to choose
Group COO & CISO
Operational excellence, governance, and information security. Aligns technology, risk, and business outcomes in complex IT environments
Managed security services providers (MSSPs) run parts of your security operation under contract: 24/7 monitoring, threat detection, incident response, device management and compliance evidence. The main players fall into five groups: global IT consultancies, security specialists, MDR vendors, telecom operators and cloud-focused MSPs. The best choice depends on your stack, regulation and how much response authority you hand over.
Key takeaways
- Outsourcing security is mainstream. In Barracuda's 2025 survey of firms with 50 to 2,000 employees, 73% already work with an MSP, and 85% of those with 1,000 to 2,000 employees depend on MSPs for security support.
- Group providers by type first: global consultancies, security specialists, MDR vendors, telecom operators and cloud-focused MSPs each suit different buyers.
- Check what the provider is allowed to do. Monitoring with email alerts is very different from analysts who contain threats at 03:00.
- Pricing is per user, per device or per data volume. Few providers publish prices, so compare quotes line by line.
- Under NIS2, your MSSP is part of your supply chain risk. Contract terms must support your own incident reporting deadlines.
What does a managed security services provider do?
An MSSP takes operational responsibility for agreed security functions, measured against a service level agreement (SLA). You keep accountability for risk; the provider does the daily work.
Typical services include:
- Security monitoring: a security operations centre (SOC) watching SIEM, endpoint, identity and cloud logs around the clock.
- Detection and response: triage of alerts, threat hunting and containment, often sold as managed detection and response (MDR).
- Device and tool management: firewalls, web application firewalls, VPNs, EDR agents and privileged access tools, including policy tuning and patching.
- Vulnerability management: scanning, prioritisation and tracking of fixes.
- Advisory: risk assessments, gap analyses against ISO 27001 or NIS2, and virtual CISO support.
Engagements are either fully managed (the provider runs the function) or co-managed (the provider works alongside your security team and shares tools and runbooks).
Why do companies use MSSPs?
Most companies use an MSSP because 24/7 security coverage is hard to staff and expensive to build alone.
The skills shortage is real: ISC2 estimated a global gap of 4.8 million cybersecurity professionals in its 2024 Cybersecurity Workforce Study. In Barracuda's 2025 research (2,000 IT and security decision-makers, including in the Nordics and India), 52% wanted help managing a growing number of disconnected security tools, and 48% relied on MSPs for round-the-clock coverage.
Regulation adds pressure. EU companies in scope of NIS2 must manage cybersecurity risk, including the security of their suppliers, and report significant incidents within strict deadlines. Many mid-sized firms find it easier to buy that operating capability than to hire it.
The five types of managed security services providers
These groups overlap, but they help you build a balanced shortlist. The examples are well-known names in each group, not a ranking.
| Type | Examples | Strengths | Watch out for |
|---|---|---|---|
| Global IT and consulting firms | IBM Consulting, Accenture, Deloitte, TCS, Infosys, Wipro, HCLTech | Scale, global SOCs, bundling with wider IT outsourcing | Minimum deal sizes; account teams can be far from the analysts |
| Security-specialist MSSPs | Arctic Wolf, Trustwave, Orange Cyberdefense, Truesec (Sweden) | Deep security focus, incident response teams, threat intelligence | Some prefer their own tooling over yours |
| MDR from security vendors | CrowdStrike Falcon Complete, Sophos MDR, Rapid7, Expel | Tight integration with the vendor's own EDR or platform | Strongest on their own stack; check coverage of other tools |
| Telecom operators | Telia, BT, Verizon | Network and firewall management bundled with connectivity | Endpoint and cloud depth varies widely |
| Cloud-focused MSPs | Cloud MSPs with a SOC, including Opsio (the publisher of this article) | Security run together with AWS, Azure and Microsoft 365 operations | Check SOC coverage hours and response authority |
Global IT and consulting firms
Large integrators offer managed security as part of broader outsourcing deals. They make sense if you already outsource infrastructure or applications to them and want one contract. Ask where the SOC analysts for your account sit and who your named contact is.
Security-specialist MSSPs
Specialists focus only on security. They usually have strong incident response and forensics teams, which matters when something serious happens. Nordic buyers often shortlist a local specialist for language, time zone and familiarity with national regulators.
MDR services from security vendors
Endpoint and platform vendors sell managed detection and response on top of their own products. This is a fast route if you already run their EDR. If your estate mixes tools, confirm which data sources the service actually monitors. For cost ranges, see our guide to how much MDR costs.
Telecom operators
Operators manage firewalls, SD-WAN and DDoS protection well because they already carry your traffic. Endpoint, identity and cloud monitoring are often delivered through partners, so ask who does what.
Cloud-focused MSPs
If most of your workloads run on AWS, Azure or Microsoft 365, a provider that manages both the cloud platform and its security can act on findings directly, for example by fixing a misconfigured security group instead of only reporting it.
What should you look for in an MSSP?
Look for proven 24/7 coverage, clear response authority, integration with your current tools and evidence that supports your audits.
- Coverage: which data sources are monitored (endpoint, identity, email, cloud control plane, network) and which are not.
- Response authority: what analysts may do without asking, such as isolating hosts or disabling accounts.
- Integration: whether the provider works with your existing SIEM and EDR, or requires its own.
- Threat intelligence: whether detections are tuned to your industry and stack, not just generic feeds.
- Certifications: ISO 27001 for the provider's own information security management, and a SOC 2 Type II report where your customers ask for one.
- Data location: where logs are stored and analysed, which matters for GDPR and public-sector buyers.
- Reporting: monthly service reviews, incident reports and evidence mapped to your frameworks.
How do MSSPs price their services?
MSSPs charge a recurring fee per user, per device or per volume of log data, plus one-off onboarding. Few publish prices. One that does is ThreatSpike, which lists fully managed IT and cybersecurity at $135 per user per month; other providers quote after scoping.
| Model | How it is counted | Best for |
|---|---|---|
| Per user | Each employee or licensed identity | Office-based firms on Microsoft 365 |
| Per device | Each endpoint, server, firewall or network device | Device-heavy estates, factories, retail |
| Per data volume | GB of logs ingested into the SIEM | SIEM-led monitoring with many log sources |
| Retainer | Fixed monthly fee for a defined scope | Advisory, vCISO and incident response readiness |
Our MSSP cost guide breaks down the factors that move a quote.
Which SLA terms matter most?
The SLA should define response times by severity, what "response" means, and what happens when the provider misses a target.
- Time to triage and time to contain for critical, high and medium incidents, measured from detection.
- Escalation path: who is called, in what order, at any hour.
- Change windows: how quickly firewall or policy changes are made on request.
- Service credits for missed targets, and the right to exit after repeated misses.
- Exit terms: handover of logs, detection rules and documentation if you change provider.
MSSPs and NIS2: what to check in the contract
If NIS2 applies to you, your MSSP is both a control and a supplier risk. Article 21 of the NIS2 Directive lists supply chain security, incident handling and business continuity among the required risk-management measures. Article 23 requires an early warning within 24 hours of becoming aware of a significant incident and a notification within 72 hours.
So the contract should state how fast the provider tells you about a suspected significant incident, what evidence it supplies for your report, and how it secures its own access to your systems. Read more on our NIS2 page.
How Opsio helps
Opsio runs a 24/7 SOC service and manages security together with cloud operations on AWS, Azure and Microsoft 365. Our offices are in Karlstad, Sweden, and Bangalore, India.
For coffee roaster Löfbergs, which is in scope of NIS2 and the Swedish Cybersecurity Act (Cybersäkerhetslagen), Opsio acts as end-to-end compliance partner. The programme ran in four phases: a gap analysis, a prioritised roadmap, implementation of controls such as incident handling, access control, logging and monitoring, and ongoing compliance with regular security reviews. Read the Löfbergs NIS2 case.
Frequently asked questions
Who are the top managed security services providers?
Well-known names include global firms such as IBM Consulting, Accenture and TCS, security specialists such as Arctic Wolf and Orange Cyberdefense, vendor MDR services such as CrowdStrike Falcon Complete and Sophos MDR, and telecom operators. The best fit depends on your size, stack and regulation, not on overall market size.
What is the difference between an MSSP and an MDR provider?
An MSSP covers a broad set of managed security functions, often including firewall and device management. An MDR provider focuses on detecting and responding to threats, usually with deeper endpoint and response capability. Many providers offer both.
How much do managed security services cost?
Prices depend on users, devices, log volume and service level. Few providers publish rates; ThreatSpike lists fully managed IT and cybersecurity at $135 per user per month. Most others quote after scoping.
How long does MSSP onboarding take?
Onboarding usually takes weeks rather than days: deploying agents, connecting log sources, tuning detections to reduce false positives and agreeing escalation paths. Complex or regulated estates take longer.
Can an MSSP help with NIS2 compliance?
Yes, for the operational parts: monitoring, incident handling, logging and evidence. Accountability stays with your management body, so you still need your own risk management and governance.
About the Author
Group COO & CISO
Fredrik is the Group Chief Operating Officer and Chief Information Security Officer at Opsio. He focuses on operational excellence, governance, and information security, working closely with delivery and leadership teams to align technology, risk, and business outcomes in complex IT environments. He leads Opsio's security practice including SOC services, penetration testing, and compliance frameworks.
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