Best Managed SIEM Services Providers

Antarex

Antarex is a cybersecurity capability partner that helps organisations build, operate, and strengthen their security operations. Combining proprietary platforms, best-of-breed technologies, AI-enabled automation, and 24×7 cyber expertise, we deliver integrated security operations rather than disconnected security tools. Our capabilities include SIEM, XDR, threat intelligence, network detection, vulnerability management, threat hunting, and incident response. Whether through fully managed services or Build-Operate-Transfer (BOT) programmes, we help organisations improve visibility, accelerate threat detection and response, and build long-term cyber resilience. Every deployment is tailored to each customer’s operational, regulatory, and business requirements, enabling security teams to reduce complexity and respond to evolving cyber threats with greater confidence.

Average Rating: 4.6/5.0

Total Reviews: 29

Netsurion

Netsurion® is a managed open XDR solution that delivers greater attack surface coverage, guided threat remediation, and compliance management support. Our 24x7 SOC operates as your trusted cybersecurity partner, working closely with your IT team to strengthen your cybersecurity posture so you can confidently focus on your core business. Our smart, flexible packaging allows small- to mid-sized organizations to access​ advanced cybersecurity solutions at the most cost-effective price. And Netsurion is MSP-ready to protect your business and your clients through multi-tenant management, Open XDR to work with your existing security stack, and “Pay-as-you-Grow” pricing. Visit www.netsurion.com to learn more.

Average Rating: 4.6/5.0

Total Reviews: 18

Cybriant

Cybriant delivers a comprehensive and customizable set of managed cybersecurity services, Cybriant's team of highly-trained, professional, security analysts provide 24/7 continuous threat detection with remediation through Managed SIEM with LIVE Monitoring, Managed Detection and Remediation (MDR), Comprehensive Vulnerability Management, and CybriantXDR. Cybriant helps clients by offering managed security services that cover the fundamental cybersecurity needs of most organizations. We make enterprise-grade cybersecurity services accessible to the mid-market and beyond.

Average Rating: 4.7/5.0

Total Reviews: 34

Velstadt

Velstadt is a cybersecurity solutions provider specializing in advanced penetration testing, threat intelligence, and incident response. We don’t just protect businesses; we fortify digital ecosystems against the most sophisticated cyberattacks. Our mission is simple: stay ahead of hackers so you don’t have to. With a team of expert ethical hackers, security analysts, and threat intelligence experts, we provide next-generation cybersecurity solutions tailored to your business needs. Whether it’s penetration testing, threat intelligence, or rapid incident response, we ensure your organization stays resilient, compliant, and fully prepared for any cyber challenge. From fast-scaling startups to global enterprises, we’ve helped businesses across industries build unbreakable security frameworks. Because in today’s digital world, security is essential, not optional. Our Services → Penetration Testing (Pentest) – Identify vulnerabilities before hackers do. We conduct real-world attack simulations to strengthen your security posture. → Threat Intelligence - Delivering real-time insights on emerging threats, APT groups, IOCs, and IOAs, while our Threat Hunting proactively identifies and remediates hidden threats within the infrastructure before they escalate. → Dark Web Monitoring - Detecting leaked or compromised sensitive data across the dark web, forums, and other hidden sources. → SOC-as-a-Service – 24/7 threat monitoring, incident detection, and automated response. → Security Awareness & Training – Empower your employees with expert-led security training to mitigate human-related risks. → Cloud Security – Hardening your cloud infrastructure on AWS, Azure, and GCP to withstand evolving cyber threats. → Regulatory Compliance – Conducting audits to ensure alignment with international standards like ISO/IEC 27001, GDPR, NIS2, etc. → Security Consulting & Virtual CISO - Delivering expert guidance to develop, implement, and optimise robust cybersecurity strategies to ensure resilience and regulatory compliance. Our Impact in Numbers 100+ successful security audits conducted 1,000+ vulnerabilities identified and remediated 97% client retention rate Why Choose Velstadt? → Proven Expertise – Years of experience securing businesses across multiple industries, from fintech to healthcare. → Tailored Security Strategies – We customize our solutions based on your company’s unique risk profile. → Cutting-Edge Technology – Our team uses the latest tools and methodologies to protect your business. → Global Reach – We support businesses worldwide, providing 24/7 monitoring and security solutions. → Customer-Centric Approach – We are your reliable cybersecurity partner, providing optimal protection and efficiency.

Average Rating: 5.0/5.0

Total Reviews: 12

Corsica Technologies

Corsica Technologies is a strategic technology partner for midmarket and enterprise businesses that specializes in consulting and managed services, designed to assist businesses in navigating the complexities of the digital landscape. This solution encompasses a wide array of services, including cybersecurity, IT services, artificial intelligence (AI) solutions, digital transformation, electronic data interchange (EDI), and data integration. By offering a comprehensive suite of services under one roof, Corsica Technologies aims to streamline operations and enhance the technological capabilities of its clients. The target audience for Corsica Technologies includes businesses of all sizes and across various sectors that are seeking to improve their IT infrastructure and security posture. Organizations looking to optimize their technology utilization and protect their systems from emerging threats can benefit significantly from Corsica's offerings. The company provides both fully managed and co-managed service options, allowing clients to choose the level of support that best fits their operational needs. This flexibility is particularly valuable for companies that may not have extensive in-house IT resources or expertise. Key features of Corsica Technologies include its integrated team of experts, which is backed by over 300 industry certifications. This level of expertise ensures that clients receive informed guidance and support tailored to their specific challenges. Additionally, Corsica manages over 20,000 systems, demonstrating its capability to handle diverse technological environments. The company's emphasis on cybersecurity is particularly noteworthy, as it provides businesses with the necessary tools and strategies to safeguard their data and systems against cyber threats. Another significant benefit of partnering with Corsica Technologies is the predictable monthly pricing model. This approach allows businesses to budget effectively for their IT needs without the uncertainty of fluctuating costs. By offering unlimited service consumption, Corsica ensures that clients can access the support they require without worrying about additional fees. This model not only enhances cost efficiency but also fosters a collaborative relationship between Corsica and its clients, as both parties work together to achieve optimal technology utilization. Overall, Corsica Technologies stands out in the managed services category by providing a holistic approach to technology management. Its combination of expertise, comprehensive service offerings, and flexible pricing structure positions it as a valuable partner for businesses aiming to thrive in an increasingly digital environment.

Average Rating: 4.5/5.0

Total Reviews: 60

ControlScan

ControlScan is a Managed Security Service Provider with a difference: We take a proactive approach to protecting businesses from cyber threats while helping ensure their compliance with security and privacy standards like PCI DSS and HIPAA/HITECH. Our unified security and compliance services deliver confidence to millions of businesses as well as the IT professionals who serve them. Merchant service providers and web hosting companies also partner with us to reduce cybercrime-related business risk. Based in Atlanta, ControlScan is venture backed and supported by a worldwide base of customers, partners and strategic alliances. For more information, please visit ControlScan.com or call 800-825-3301.

Average Rating: 4.2/5.0

Total Reviews: 3

CompuCom

At CompuCom, we’ve seen the “office” as we’ve known it for decades change rapidly. Without reliable support, collaboration, and connectivity strategies for their increasingly distributed workforce, organizations will get left behind. OUR GUIDING PRINCIPLES: • Enable a Ready Now Experience by providing and supporting uninterrupted solutions and services • Deliver a Concierge Outcome through people and automation, driving increased end-user productivity • Strive for a Zero Dispatch Edge by delivering solutions that reduce the need for onsite services • Live Green by minimizing ours and our customers’ environmental impact through sustainable technology, innovation, and processes OUR SOLUTIONS: • Workplace Technology enables the best employee experiences and increases productivity • Employee and Technology Support delivers personalized support through omni-channel options • Digital Edge and Security brings reliable and secure connectivity to any device, anywhere, and anytime • Connected Workplace promotes productivity and ease of collaboration through technology • Elite Employee Experience provides end-to-end services configured to the needs of your business and users • IT Staffing Services offering staff augmentation, direct and contract hiring for your IT needs

Average Rating: 3.4/5.0

Total Reviews: 6

ITECS Outsourcing

Since 2002, ITECS has provided customized turn-key services to a variety of high-profile clients, including Frito Lay, Pizza Hut, Miller Brewing, Kraft, and more. We scale our services to any business size and offer rapid on-site and remote IT support, cybersecurity, consulting, and cloud hosting solutions. Our dedicated team of agents is capable of meeting the demands of your business no matter what industry you're in. At ITECS, we treat every client interaction as an opportunity to improve our reputation and grow together. ITECS is a unique technology solutions provider that sets itself apart from its competitors by offering a personalized and flexible approach to IT services. Unlike traditional help desk models, ITECS assigns a pod of experts to each client to establish a more personal and collaborative relationship. This allows for a deeper understanding of the client's business needs and challenges, leading to tailored solutions that align with their goals. ITECS also offers scalable services that can grow alongside businesses, providing a wide range of technologies and services that meet their unique requirements. By offering this customized and adaptable approach, ITECS stands out as a reliable partner for businesses looking to enhance their technological capabilities.

Average Rating: 4.9/5.0

Total Reviews: 11

Managed SIEM

Compuquip Managed SIEM: Superior Threat Detection and Response In today's complex threat landscape, robust security monitoring is paramount. Compuquip's Managed SIEM service delivers unparalleled threat detection and incident response, empowering your organization to proactively defend against cyberattacks. Our expert security analysts leverage cutting-edge SIEM technology to provide 24/7 monitoring, ensuring no threat goes unnoticed. We go beyond basic log aggregation, actively hunting for malicious activity and rapidly responding to security incidents to minimize impact and ensure business continuity. Unlike other providers, Compuquip offers a tailored approach, seamlessly integrating with your existing infrastructure and adapting to your unique needs. With Compuquip, you gain a dedicated security partner committed to protecting your valuable assets, allowing you to focus on your core business. Experience the difference of true security expertise – choose Compuquip Managed SIEM and gain the competitive edge.

Average Rating: 5.0/5.0

Total Reviews: 1

NTT Security Services

With a focus on managed security services (MSS) and global threat intelligence, NTT Security protects traditional and virtual IT infrastructures, cloud environments and mobile data.

Average Rating: 4.5/5.0

Total Reviews: 1

1440 Security

1440 Security's Managed SIEM service is designed to scale with your organization’s security needs without costly integrations or customizations. We deliver real-time visibility, intelligence, automation and efficiencies across your entire IT environment to protect your business.

ACE Managed SIEM

ACE Managed SIEM empowers threat detection and delivers unparalleled network visibility to enterprises. ACE’s centralized threat dashboard platform gives you prioritized alerts, actionable intelligence, and remediation plans with round-the-clock monitoring and instant support. Prevent advanced threats and zero-day vulnerabilities with MITRE ATT&CK mapping and in-depth forensic analysis while automated compliance keeps you always audit-ready. If you are looking for a cost-effective and customizable SIEM solution with hassle-free managed operations, ACE is here for you. You can contact our security experts for a free consultation worth $500. They will assess your current security posture and suggest plans to strengthen your security.

Altoverra Managed SIEM

With a comprehensive range of professional and managed services, Altoverra empowers businesses to strengthen their cybersecurity posture and mitigate risks effectively. Our flagship service, Managed SIEM, offers proactive threat detection, real-time security monitoring, and incident response capabilities, providing organizations with the visibility and control needed to safeguard their critical assets and data. Leveraging advanced analytics and machine learning algorithms, we help businesses stay ahead of emerging threats and compliance requirements, ensuring peace of mind and regulatory adherence. In addition to Managed SIEM, Altoverra offers cybersecurity services, including vulnerability assessments, penetration testing, security awareness training, and compliance consulting. Our certified security professionals bring extensive experience and expertise to every engagement, delivering high-quality solutions that meet the highest industry standards.

Armadillo

Armadillo is one of the UK’s most experienced cyber security specialists, focussing on enabling businesses to conduct their business in confidence, without fear of security attack and without compromising how they operate.

ArmorPoint

ArmorPoint Managed SIEM adds a full management layer on top of our powerful SIEM (security information & event management) platform to ensure your network is as secure as possible at all times.