What Is an MSSP? Definition, Services and How It Differs from an MSP

What Is an MSSP? Definition, Services and How It Differs from an MSP

An MSSP (Managed Security Service Provider) is a specialist IT provider that manages and monitors an organisation's cybersecurity 24/7 from its own Security Operations Center (SOC). Unlike a regular MSP (Managed Service Provider), an MSSP focuses specifically on security: from threat detection and response to compliance support and vulnerability management.

Key takeaways (TL;DR)

• MSSP = Managed Security Service Provider: a specialist external security partner with a 24/7 SOC
• MSP vs MSSP: an MSP manages your IT infrastructure across the board; an MSSP focuses exclusively on cybersecurity
• Core services: SOC monitoring, EDR, threat intelligence, incident response, vulnerability management
• MSSP costs: €20-75 per user per month for SMEs, depending on service level
• Why it matters for SMEs: 74% of all cyberattacks in the Netherlands target small and mid-sized businesses, and an in-house security team is financially out of reach for most companies
• NIS2 compliance: an MSSP helps organisations meet the new European cybersecurity legislation

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What exactly does an MSSP do?

An MSSP takes over your organisation's cybersecurity as a fully managed service. These are its core activities:

1. 24/7 SOC monitoring (Security Operations Center)

The heart of every MSSP is its Security Operations Center. Analysts continuously monitor clients' networks, endpoints and cloud environments. Suspicious activity is detected automatically and then assessed by security specialists, day and night, weekends included.

2. Threat Detection & Response (EDR/XDR)

Using Endpoint Detection & Response (EDR) or Extended Detection & Response (XDR), threats on workstations, servers and network devices are detected in real time. When there is an active threat, the MSSP steps in immediately: isolating infected systems, analysing the attack and restoring normal operations.

3. Vulnerability Management

An MSSP continuously scans for known vulnerabilities in software, operating systems and network configurations. Critical vulnerabilities are prioritised and fixed before attackers can exploit them.

4. Email and phishing protection

More than 90% of all cyberattacks start with a phishing email. An MSSP secures your email traffic with advanced filtering, sandboxing of attachments and training that teaches employees to recognise phishing.

5. Incident Response

If an incident does happen, the MSSP coordinates the response: containing the damage, carrying out a forensic investigation into the cause, restoring systems and communicating with everyone involved. Many MSSPs offer a guaranteed response time of 15-60 minutes for critical incidents.

6. Compliance support

An MSSP helps organisations comply with legislation and standards such as NIS2, DORA, ISO 27001 and GDPR. This covers technical measures, policy development, reporting and audit preparation.

7. Threat Intelligence

Through subscriptions to international threat intelligence feeds, an MSSP stays on top of new threats, malware campaigns and attack methods. That knowledge is applied directly to monitoring client environments.

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The difference between an MSP and an MSSP

The terms MSP and MSSP are often used interchangeably, but they describe fundamentally different services:

Some providers, TRON Group among them, combine the two: they offer full managed IT and advanced cybersecurity as one integrated service. This is sometimes called MSSP+ or full-stack managed IT.

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Why do SMEs need an MSSP?

Cyber threats are an SME problem

74% of all cyberattacks in the Netherlands target SMEs, according to the Dutch National Cyber Security Centre (NCSC). Attackers deliberately go after smaller organisations because their security is often less sophisticated than that of large enterprises.

A security incident is expensive

A ransomware attack costs the average Dutch SME €150,000 to €250,000, including recovery costs, lost productivity and reputational damage. On top of that, data breaches can lead to GDPR fines of up to 4% of global annual turnover.

Doing it in-house is barely affordable

A full-time security specialist costs at least €70,000-€90,000 gross per year. Providing 24/7 monitoring takes a minimum of 4-5 specialists. For most SMEs that simply isn't financially viable. An MSSP delivers the same capability as a shared service for a fraction of the cost.

NIS2 makes it mandatory

The NIS2 Directive, which is now in force in the Netherlands, requires organisations in critical sectors to have demonstrable security measures, incident reporting and supply chain security. An MSSP helps you comply with this legislation.

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How much does an MSSP cost for SMEs?

The cost of an MSSP service for SMEs varies considerably depending on the service level:

For an organisation with 25 employees, that means a monthly investment of €500 to €2,500, depending on the level you choose. Compared with the cost of a single security incident, that's a relatively modest investment.

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TRON Group as an MSSP for Dutch SMEs

TRON Group, based in Nieuwerkerk aan den IJssel, acts as an MSSP for SMEs in the Randstad region and beyond. We combine:

• 24/7 monitoring of networks, workstations and cloud environments
• Advanced EDR/XDR with immediate threat response
• Email security and phishing simulations for employees
• Compliance support for NIS2, ISO 27001 and GDPR
• Full managed IT as an integrated service alongside security

We believe cybersecurity isn't an optional extra but the foundation of reliable IT. Our SME clients can focus on their core business while we make sure their IT stays secure, available and compliant.

Call us on +31 85 303 5869 for a no-obligation chat, or request a free security assessment to map out your current level of protection.

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Frequently asked questions about MSSPs

What is the difference between an MSSP and an MSP?

An MSP (Managed Service Provider) manages an organisation's broader IT infrastructure: networks, workstations, cloud and helpdesk. An MSSP (Managed Security Service Provider) focuses exclusively on cybersecurity, with its own 24/7 SOC, advanced threat detection and incident response. Some providers combine both roles.

How does an MSSP work in practice?

After onboarding, the MSSP installs monitoring software on all systems (endpoints, servers, firewalls, cloud). The SOC analyses the incoming data 24/7, detects anomalies and responds to threats. Clients receive monthly reports with an overview of incidents, threats and areas for improvement.

Do I have to choose between an MSP and an MSSP?

Not necessarily. Many modern IT providers offer integrated services covering both IT management and cybersecurity. The advantage is a single point of contact, with security built directly into your IT infrastructure rather than bolted on as an extra layer.

Does an MSSP help with NIS2 compliance?

Yes. An MSSP supports the technical implementation of NIS2 requirements (monitoring, incident response, supply chain security) and helps with the documentation and reporting needed for compliance. Always ask a prospective MSSP about its NIS2 portfolio.

How quickly does an MSSP respond to an incident?

Reputable MSSPs work with response times of 15-60 minutes for critical incidents, set out in the SLA. Some providers guarantee a 15-minute response for P1 incidents (active ransomware, data breaches). Always check the SLA terms before you sign.

What is a SOC and do I need one?

A SOC (Security Operations Center) is a team of security analysts that monitors IT environments 24/7. For most SMEs it isn't financially viable to build their own SOC (at least 4-5 FTEs). An MSSP provides SOC capacity as a shared service, giving you access to that expertise for a fraction of the cost of doing it yourself.

What separates a good MSSP from a bad one?

Look for: its own SOC staffed 24/7 (not just automated monitoring), ISO 27001 certification of the provider itself, proven incident response experience, a transparent SLA with financial guarantees, and references from clients in similar situations. Avoid MSSPs that can't commit to specific response time guarantees.

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TRON Group | Managed Security Service Provider for Dutch SMEs | Nieuwerkerk aan den IJssel | tron-group.eu | +31 85 303 5869