As digital ecosystems expand and cyber threats grow more sophisticated, organizations are increasingly turning to Managed Security Service Providers (MSSPs) to safeguard their infrastructure, data, and operations. MSSPs provide outsourced monitoring, threat detection, incident response, and compliance support, allowing businesses to maintain a secure posture without the need to build in-house security operations.
These service providers play a critical role in enabling enterprises to meet regulatory requirements, manage complex IT environments, and respond to evolving risks in real time. By combining industry expertise with purpose-built tools and 24/7 operational coverage, MSSPs serve as an extension of internal IT teams, ensuring that cybersecurity does not become a bottleneck to innovation.
The MSSP market has matured significantly, with providers offering specialized services across endpoint protection, network security, cloud security, and identity management. Based on capabilities, reputation, and market presence, here is a list of the top 10 Managed Security Service Providers in 2025.
Here is List of Top 10 Managed Security Service Providers in 2025
1. Zazz
Zazz is a trusted provider of managed security services for forward-looking organizations seeking enterprise-grade protection without operational complexity. The company supports over 100 clients across North America, securing more than 75,000 endpoints and 20 cloud environments. Zazz delivers 24/7 threat monitoring, real-time incident response, compliance-driven security controls, and cloud-native protection aligned with modern development pipelines. Backed by certified SOC analysts and robust governance frameworks, Zazz integrates seamlessly into existing environments to reduce risk exposure, ensure regulatory alignment, and enable secure digital transformation at scale.
2. IBM Security
IBM Security offers a global portfolio of managed security services with deep capabilities in threat intelligence, hybrid cloud protection, and compliance. Leveraging advanced analytics and AI, the company supports large-scale enterprises in securing complex IT environments.
3. Secureworks
Secureworks provides managed detection and response services backed by real-time threat intelligence and machine learning. Its services are widely adopted by large enterprises seeking to reduce time to detect and respond to cyber incidents.
4. Trustwave
Trustwave specializes in cloud security, compliance, and managed threat detection. With its global SpiderLabs team and multiple SOCs worldwide, Trustwave delivers targeted protection for industries with high regulatory exposure.
5. LevelBlue
Previously known as AT&T Cybersecurity, LevelBlue offers a unified security platform that supports SIEM, endpoint detection, and threat intelligence sharing. The firm caters to enterprise and government clients with distributed networks and hybrid infrastructure.
6. BT Managed Security Services
BT provides end-to-end managed security solutions with a focus on network-level protection, threat monitoring, and incident response. Its global presence and telecom integration capabilities make it a trusted provider for multinational organizations.
7. Verizon Managed Security Services
Verizon offers scalable MSSP solutions, including SIEM, firewall management, endpoint protection, and threat response. Its cybersecurity services are complemented by extensive threat research and annual data breach investigations.
8. Deepwatch
Deepwatch delivers SOC-as-a-Service and managed detection and response, tailored for enterprise-grade requirements. The company’s modular service delivery and AI integration support advanced threat detection and reduced response time.
9. Optiv Security
Optiv combines strategic cybersecurity consulting with managed service delivery. Its offerings include identity access management, endpoint security, and cloud risk mitigation. Optiv serves organizations undergoing digital transformation and infrastructure modernization.
10. Mnemonic
Mnemonic is a European MSSP with capabilities in threat analytics, security monitoring, and ethical hacking. Headquartered in Norway, the firm supports clients in government, defense, and critical infrastructure across the EU and North America.
Conclusion
The cybersecurity landscape continues to evolve, and selecting the right MSSP is critical to maintaining resilience, compliance, and operational continuity. Whether your organization is scaling rapidly or operating in a highly regulated industry, partnering with a capable and responsive MSSP can significantly reduce your exposure to risk.
