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How to Choose a Managed Security Services Provider: 20 Questions Every Business Should Ask

Choosing the Right MSSP for Your Business

Choosing a Managed Security Services Provider (MSSP) is an important technology decision.

The wrong provider can leave a business with expensive security software, complicated dashboards and little actual improvement in security.

The right MSSP can become an extension of the organization’s IT and security team, providing continuous monitoring, cybersecurity expertise, threat detection and incident response.

Businesses should therefore evaluate an MSSP based on what it actually delivers rather than simply comparing technology brands.

Here are 20 questions every business should ask.

1. Do You Provide 24/7 Security Monitoring?

Cybersecurity threats do not stop at 5 p.m.

Ask whether security monitoring is genuinely available 24 hours a day, seven days a week.

Also ask:

  • Who monitors the environment?
  • Are analysts working overnight?
  • What happens on weekends?
  • What happens on holidays?

A claim of “24/7 monitoring” should have operational meaning.

2. Do You Have a SOC?

Ask whether the provider operates its own Security Operations Center or uses a third party.

You should understand:

  • Where the SOC operates
  • Who staffs it
  • What qualifications analysts have
  • What systems they monitor
  • How incidents are escalated

3. Is MDR Included?

Ask whether Managed Detection and Response is included in the contract.

If it is not included, determine:

  • What it costs
  • What response actions are available
  • Whether after-hours response costs extra
  • Whether endpoint isolation is included

MDR should be clearly defined rather than used as a marketing term.

4. What EDR Platform Do You Use?

EDR is a key component of modern endpoint security.

Ask:

  • What endpoints are covered?
  • Are servers included?
  • Are remote devices included?
  • Is EDR installed on all supported devices?
  • Who monitors the alerts?
  • Who responds to detections?

5. What Systems Are Actually Monitored?

This question is critical.

An MSSP may monitor endpoints but not cloud applications.

Or it may monitor Microsoft 365 but not network infrastructure.

Ask for a complete list.

For example:

Endpoints

Servers

Firewall

Microsoft 365

Entra ID

Cloud

Email

Network

Critical applications

Identity

6. Do You Monitor Microsoft 365?

Microsoft 365 contains enormous amounts of business information.

Ask whether the MSSP monitors:

  • Exchange
  • Entra ID
  • SharePoint
  • OneDrive
  • Teams
  • Administrator activity

Identity-based attacks can be extremely damaging because attackers may use legitimate credentials.

7. How Do You Handle Ransomware?

Do not accept a generic answer.

Ask the provider to explain what happens if ransomware is detected.

For example:

  1. How is it detected?
  2. Who investigates?
  3. Can the affected endpoint be isolated?
  4. How quickly is the client contacted?
  5. How is the attack contained?
  6. How is recovery coordinated?
  7. Is incident response included?

CISA recommends businesses incorporate third-party and MSP risk into ransomware planning and use least privilege for vendor access.

8. Do You Provide Vulnerability Management?

Cybersecurity should be proactive.

Ask whether the MSSP identifies:

  • Unpatched systems
  • Vulnerable software
  • Weak configurations
  • Exposed services
  • Unsupported systems
  • Internet-facing vulnerabilities

Then ask how those vulnerabilities are prioritized.

A list of 300 vulnerabilities is less useful than knowing which five need immediate attention.

9. How Quickly Do You Respond?

Ask for actual response commitments.

For example:

Critical incident: X minutes

High severity: X minutes

Customer notification: X minutes

The exact SLA should be appropriate to your risk.

10. Who Has Authority During an Incident?

This is often overlooked.

Imagine a ransomware event at 2 a.m.

Can the MSSP:

  • Disable an account?
  • Isolate a computer?
  • Block an IP?
  • Shut down a compromised service?

Or does it need permission first?

These procedures should be decided before an incident occurs.

11. What Logs Do You Collect?

Security logging is important for detection and investigation.

Ask:

  • Which systems generate logs?
  • Which logs are collected?
  • How long are they retained?
  • Are logs centralized?
  • Who reviews them?
  • Can logs be provided after an incident?

CISA has recommended centralized logging and security monitoring, while Canadian guidance emphasizes clearly defining logging responsibilities and retention requirements.

12. What Happens When an Alert Is Generated?

This is one of the best questions to ask.

The provider should be able to explain:

Alert → Investigation → Classification → Response → Notification → Documentation

If the answer is simply “you receive an alert,” you may not be getting a fully managed service.

13. Do You Provide Incident Response?

Determine whether incident response is:

  • Included
  • Limited
  • Optional
  • Charged hourly
  • Provided by a third party

NIST’s current incident-response guidance emphasizes integrating incident response into broader cybersecurity risk management rather than treating it as something that starts only after a breach.

14. Do You Help With Cyber Insurance Requirements?

Ask whether the MSSP can help identify common security-control requirements associated with cyber insurance.

These may include:

  • MFA
  • EDR
  • Backups
  • Monitoring
  • Access controls
  • Security policies

The insurer’s requirements should always be treated as authoritative.

15. Do You Provide Compliance Reporting?

If your organization operates in a regulated environment, ask whether the provider can provide security documentation and reporting to support your compliance program.

The provider should explain exactly what it does and does not cover.

16. How Do You Secure Your Own Access?

This is critical.

Your MSSP has privileged access to your environment.

Ask:

  • Is MFA mandatory?
  • Are privileged accounts protected?
  • Is access logged?
  • Is least privilege used?
  • Are administrative sessions monitored?
  • How is vendor access controlled?

CISA specifically recommends strong controls around MSP access because compromised providers can create risk across customer environments.

17. What Reporting Will Management Receive?

Good security reporting should explain:

  • Security incidents
  • Threats detected
  • Vulnerabilities
  • Security trends
  • Device coverage
  • Compliance-related controls
  • Recommended improvements

The goal is to understand risk, not simply receive a pile of technical data.

18. What Is Not Included?

Ask for exclusions.

Potential exclusions could involve:

  • Incident response
  • Additional users
  • Servers
  • Cloud workloads
  • After-hours support
  • Security assessments
  • Penetration testing
  • Compliance consulting

Transparent pricing reduces surprises.

19. Can You Work With Our Existing MSP?

Businesses do not necessarily need to replace their IT provider.

An MSSP should be able to explain how responsibilities will be divided.

For example:

MSP: IT infrastructure

MSSP: Cybersecurity monitoring and response

Internal IT: Business applications

Management: Security governance

Clearly defined responsibilities reduce gaps.

20. Can You Explain Our Security Risk in Business Terms?

This may be the most important question.

A cybersecurity provider should be able to explain:

  • What risks exist?
  • Which risks matter most?
  • What should be fixed first?
  • What is already protected?
  • What remains exposed?

The NIST CSF 2.0 is designed to help organizations understand, prioritize and communicate cybersecurity risk regardless of their size or industry.

MSSP Evaluation Checklist

Before choosing an MSSP, look for:

Security Operations

  • 24/7 monitoring
  • SOC
  • MDR
  • Threat detection
  • Incident response

Technology

  • EDR
  • SIEM
  • XDR
  • Firewall monitoring
  • Email security
  • Cloud security

Risk Management

  • Vulnerability management
  • Security assessments
  • Identity security
  • MFA
  • Patch management

Business Support

  • Reporting
  • Compliance support
  • Cyber insurance support
  • Security planning

Service Quality

  • Defined SLAs
  • Clear responsibilities
  • Transparent pricing
  • Human support
  • Documented response procedures

Choosing an MSSP should not be a race to find the provider with the most impressive list of security products.

The better question is:

Can this provider continuously protect, monitor and respond to threats affecting our business?

Technology matters, but people, processes, response procedures and accountability matter just as much.

A good MSSP should be able to clearly explain what it monitors, what it protects, how it responds and what happens when a serious security event occurs.

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