Best MSSP Providers You Can Trust

Managed security services providers, or MSSP providers for short, have become essential allies to businesses in the face of soaring cyber attacks. These third-party experts step in to fill the critical cybersecurity gaps, delivering managed security services—all backed by deep expertise that many in-house teams simply can’t afford.

To help you find the right security partner or confidently make a switch, we’ve compiled a list of 12 cybersecurity providers—like UnderDefense, CyberMaxx, and Sophos—that take the complexity out of security to help your business thrive and grow.  

Top 12 Managed Security Providers You Can Count on for Expert Cyber Defense

When choosing a managed security service provider, there’s no one-size-fits-all answer to who’s the best fit for your business. Much depends on your infrastructure, security priorities, compliance needs, and the level of in-house expertise you already have. 

Whether you’re choosing a provider for the first time or considering a change, our list of the leading managed security service companies can help guide your decision.

1. UnderDefense
2. ThreatSpike
3. Cyvatar.ai
4. Rapid7
5. CyberMaxx
6. Symantec
7. NTT
8. Alert Logic
9. Secureworks
10. Capgemini
11. Netsurion
12. Sophos

Key Features of Managed Cyber Security Service Providers

1.UnderDefense

UnderDefense is a trusted managed security service provider that helps businesses stay ahead of complex cyber threats by combining expert-driven monitoring with advanced automation to speed up threat detection, analysis, and mitigation across cloud, hybrid, and on-premise infrastructures. The UnderDefense approach ensures rapid action and 360° visibility, handling alerts in just 2 minutes, containing active threats in under 15 minutes, and reducing false positives by 99%.

How UnderDefense solves major security challenges:

• Fine-tuning of existing security tools to ensure they are properly configured and used to their full potential
• Full customer ownership of all processes and systems implemented by UnderDefense
• Proactive security and a personalized approach to customers’ unique needs and goals
• Much-needed resources, visibility, and transparency to strengthen limited in-house capabilities
• Tailored compliance guidance to help companies prepare for audits and build customer trust.

Main features:

• Continuous threat monitoring with round-the-clock support from skilled security analysts

• Intelligent automation that correlates and enriches alerts to minimize noise and focus on real threats
• Integration with over 250 security tools, allowing for easy setup within existing environments
• Level 5 SOC maturity with proactive analysis of attack paths to stop threats before they escalate
• Flexible, audit-ready compliance reporting that meets standards like ISO 27001, GDPR, and HIPAA.

2. ThreatSpike

ThreatSpike is an end-to-end managed security provider offering comprehensive security solutions tailored for businesses of all sizes. Their managed cyber security services deliver continuous 24/7 threat monitoring, incident response, and offensive security testing—all under a transparent, fixed-cost model. 

Main features:

• MDR, data loss prevention, web filtering, asset inventory, and full packet capture, ensuring managed network security and protection 
• Ongoing penetration tests and red team exercises to identify vulnerabilities proactively 
• A unique pricing model, providing unlimited access to penetration testing and incident response services. 

3. Cyvatar.ai

Cyvatar.ai is a cybersecurity-as-a-service provider that offers fully managed security solutions delivering continuous threat monitoring, vulnerability management, and compliance. The company’s cyber security solutions and services help businesses move from detection to resolution faster by integrating remediation into every step of the security process. 

Main features:

• A structured managed cybersecurity strategy aligned with business objectives 
• Compliance support with SOC 2, HIPAA, NIST, and PCI, through cyber security monitoring services and expert guidance
• Integration of all security tools into a single dashboard for streamlined security management and reporting. 

4. Rapid7

Rapid7 is a leading cybersecurity service provider offering always-on threat detection and response, vulnerability management, application security, and red teaming services. The company’s cyber risk assessment services help businesses proactively identify, assess, and remediate security risks across their entire digital infrastructure.

Main features:

• Managed monitoring services, 24/7 incident response, and proactive threat hunting
• Vulnerability assessment services to prioritize and remediate risks across environments
• Managed application security with dynamic testing and expert remediation guidance
• Continuous red teaming simulations for persistent attack surface evaluation.

5. CyberMaxx

CyberMaxx is an MSSP security company that delivers comprehensive managed cybersecurity services, including threat detection, incident response, and continuous threat exposure management. The company combines offensive strategies with real-time managed detection and response to proactively protect organizations against evolving threats. 

Main features:

• Integration of offensive insights into MDR to enhance the detection of advanced threats
• 24/7 managed security monitoring with zero-latency incident response
• Offers flexible managed and co-managed deployment models
• Delivers full-stack visibility across on-premise and cloud environments.

6. Symantec

Symantec is a managed security services provider offering around-the-clock threat monitoring, incident response, vulnerability management, and compliance support. Symantec delivers real-time threat intelligence and analytics to help organizations proactively detect and mitigate cyber threats across their digital infrastructure.

Main features:

• Full-spectrum visibility, proactive threat hunting, and managed threat response backed by threat intelligence
• Integrated security services, including managed data security and managed cloud security, to ensure end-to-end protection 
• Flexible service tiers to meet diverse organizational needs and compliance requirements.

7. NTT

NTT is a security-as-a-service company offering a range of cybersecurity managed services, including non-stop threat monitoring, rapid threat containment, exposure management, and secure infrastructure operations. NTT delivers AI-powered threat intelligence and analytics to detect and mitigate cyber threats across digital infrastructures proactively.

Main features:

• Managed network security services, managed endpoint security services, and managed cloud security services as integrated, policy-driven services
• Early threat discovery and containment through expert-led investigations and AI-driven analytics
• Customizable service models and co-managed services that complement in-house security teams.

8. Alert Logic

Alert Logic is a cybersecurity service provider that delivers expert-led security solutions across cloud, on-premises, and hybrid environments. The company’s MSSP cybersecurity services include proactive threat hunting and rapid incident response supported by a global security operations center and advanced analytics.

Main features:

• 24/7 threat monitoring and response through a global SOC of certified security analysts 
• Vulnerability scanning and cyber security assessment services to prioritize remediation efforts
• Managed firewall services to protect web applications and APIs from malicious exploits 
• Compliance support for PCI DSS, HIPAA, and GDPR with audit-ready reporting.

9. Secureworks

Secureworks is a managed cybersecurity services provider that empowers security teams with unified visibility and accelerated incident response by combining advanced analytics, machine learning, and expert threat intelligence. The company helps organizations strengthen enterprise security management across endpoints, networks, and cloud environments. 

Main features:

• Integration of telemetry from various sources to ensure comprehensive threat detection
• 24/7 access to security experts, facilitating rapid incident response and threat mitigation
• Tailored managed cyber security solutions, including managed threat hunting and incident response services.

10. Capgemini

Capgemini is a proven cyber security managed service provider that delivers adaptive, intelligence-driven solutions tailored to complex enterprise environments. The company’s managed IT security services encompass threat detection, incident response, and compliance management across IT, OT, and cloud infrastructures.

Main features:

• Dedicated, hybrid, and managed SOC service models to align with client-specific security needs
• Comprehensive compliance support, ensuring adherence to regulations such as GDPR and HIPAA
• Industry-specific managed IT security solutions for sectors like manufacturing and healthcare.

11. Netsurion

Netsurion is a managed cyber security service provider that delivers adaptive security solutions, combining non-stop monitoring, threat detection, and incident response. The company’s services span managed endpoint protection, vulnerability management, managed SIEM, and compliance support, tailored to meet the unique needs of businesses across various industries.

Main features:

• Co-managed SOC services to augment internal teams with skilled security experts
• Holistic visibility across networks, endpoints, and cloud environments
• Tailored compliance support to meet regulatory requirements such as PCI DSS, HIPAA, and GDPR.

12. Sophos

Sophos is a cyber security-as-a-service company that delivers MSSP cybersecurity services with a strong focus on threat prevention, detection, and response. As an MSSP provider, the company helps organizations streamline security operations by combining AI-powered tools with 24/7 expert monitoring and rapid incident response.

Main features:

• Adaptive ecosystem centralizing endpoint, network, email, and cloud security
• Threat intelligence powered by X-Ops, a team of analysts, researchers, and responders
• Collaboration with internal IT teams or managed threat response, depending on customer needs.

Key Benefits of Managed Security Services Providers

Managed security service providers offer a full spectrum of cyber security managed services, delivering continuous protection, deep expertise, and the flexibility to scale as your business grows. Here’s how partnering with top MSSP companies can bring real, lasting value to your organization: 

1. 24/7 monitoring and rapid response

MSSPs provide around-the-clock surveillance of your systems through dedicated SOCs. This “always on” approach ensures threats are detected and contained quickly, often before they can cause serious harm, giving your team peace of mind and freeing them to focus on strategic priorities.

2. Access to specialized expertise

Hiring and retaining top-tier security professionals is challenging for most companies. Cyber security vendors bring in-depth knowledge across various threat landscapes, including malware analysis, forensics, cloud security, and compliance. This level of skill becomes available to your business without the high cost or overhead of building an in-house team.

3. Cost-efficient security operations

Instead of investing in expensive infrastructure, software licenses, and internal staffing, security partners offer a predictable, subscription-based pricing model. This helps organizations lower total cost of ownership, convert capital expenses into operational ones, and stay protected without breaking the budget.

4. Improved threat detection and reduced risk

By aggregating and correlating data from across your endpoints, network, cloud, and applications, cyber security managed service providers deliver faster, smarter threat detection. Their advanced analytics and automation tools reduce false positives and help prioritize the alerts, so your team can act faster and stay ahead of attackers.

5. Scalable security that grows with you

As your business evolves, so do your security needs. Cybersecurity vendors offer flexible managed security services that can scale up or down as needed. No need to rebuild your security architecture from scratch with every change.

6. Streamlined compliance support

Navigating frameworks like GDPR, HIPAA, PCI DSS, and ISO 27001 can be time-consuming and costly. Cybersecurity providers simplify this process by aligning your security controls with compliance requirements, offering ongoing audit support, and generating clear reports to demonstrate your readiness—saving time, reducing risk, and increasing customer trust.

7. Maximized value from existing tools

Many companies already have dozens of security tools, but lack the time or expertise to configure and manage them effectively. Top managed security service providers know how to optimize your existing stack, ensuring all systems are tuned, integrated, and working together to deliver better protection and higher ROI.

8. Increased security maturity without the overhead

Even small and mid-sized companies can achieve enterprise-grade security by working with a cybersecurity partner. From automated incident response to tailored threat intelligence, cybersecurity managed service providers bring in the tools and processes needed to raise your security maturity—without the overhead of building it all by yourself.

How to Choose the Best Managed Security Service Provider for Your Business

Partnering with a managed security-as-a-service provider can give your business a major edge—but only if you decide on the right one. With dozens of security vendors offering everything from alert monitoring to incident response, knowing what to look for is essential to making a smart, future-proof decision.

• Match services to your security maturity

A good managed cybersecurity service provider doesn’t just sell services but rather complements what you already have. If you’re running a mature SOC, you may only need help with specific tasks like advanced threat detection or 24/7 monitoring. If you’re starting from scratch, look for a provider offering full coverage, from detection to recovery.

• Decide on the right response level

Not all cyber security service providers respond the same way. Some stop at alerting, while others offer in-depth investigation or end-to-end incident response. Choose a provider whose approach matches your organization’s risk profile and the level of access you’re comfortable giving them.

• Check for seamless integration

Your MSSP managed security service provider should plug into your existing infrastructure—cloud, hybrid, or on-prem—without adding complexity. Look for providers that support integration with your current security tools, SIEM platforms, and IT environment to ensure a smooth handoff and continuous coverage.

• Look for transparency and control

Choosing outsourced cybersecurity doesn’t mean you have to lose visibility into your defenses.
Best managed security service providers offer clear SLAs, regular reporting, and dashboards that keep you informed of what’s happening and what actions are being taken.

• Prioritize 24/7 support and monitoring

Cyberattacks don’t follow office hours. Ensure your managed service security provider operates an around-the-clock SOC staffed by certified analysts who can detect and respond to threats the moment they emerge.

• Assess compliance readiness support

If your business is subject to regulations like GDPR, HIPAA, or PCI DSS, choose a managed cyber security services provider that offers ongoing compliance guidance. This includes generating audit-ready reports, logging and documentation, and maintaining continuous monitoring required by regulatory frameworks.

Choosing the best MSSP for your business is more than a technology decision—it’s about a partnership built on trust, transparency, and results. Take the time to evaluate your current gaps, define your priorities, and vet MSSP providers who can help you build resilience and prepare for emerging threats.