Managed SIEM Services: Deployed, Tuned, and Monitored 24/7
We turn alert noise into insight with our managed SIEM solution powered by UnderDefense Agentic AI SOC. It eliminates false positives, tunes your SIEM for maximum detection accuracy, and delivers real-time threat monitoring across your entire environment.
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Market leaders trust us
Compare SIEM-as-a-Service by UnderDefense to Traditional SIEM
20 min
SLA response time to critical threats
1000+
Unique SIEM correlation rules to cover all your use cases and find a needle in a haystack
20 min
To make your SIEM up and running in our cloud, ready for log ingestion in your region
96%
MITRE ATT&CK framework coverage to spot intrusion at any step of the kill chain
How managed SIEM works
From the first log source to the monthly report, here's what our team runs for you at each step of managed SIEM services.
Data ingestion
Tuning and correlation rules
24/7 monitoring
Reporting and response
How UnderDefense solves your SIEM challenges
- Tuning overload. Most teams struggle to configure detection rules and log sources. We manage SIEM tuning and alert logic, so it works 24/7.
- Expertise gaps. No internal SIEM expertise or time? Our SIEM-as-a-Service team covers ops, scaling, and SIEM consulting.
- Deployment delays. SIEM onboarding is slow and painful. We streamline co-managed SIEM deployment and go live faster.
- Console chaos. Switching tools kills visibility. We connect SIEM with MDR & IR workflows for full context.
- Alert noise. Too many false positives eat your team's time. We fine-tune rules to cut noise and put real threats first.
- No threat context. Can’t connect logs to real incidents? We unify telemetry so every alert comes with the context to act on it.
- Compliance pressure. SOC 2, HIPAA, ISO 27001, and GDPR add up to too much to manage. Our managed SIEM cloud services automate reports and simplify audits.
- Staff turnover. Security churn breaks SIEM performance. Our always-on SOC fills the talent gap with no learning curve.
Benefits of managed SIEM services
Go beyond basic SIEM: Real outcomes with managed SIEM services
Improve threat detection and response
Meet and maintain compliance
Lessen the burden on your in-house IT team
Win larger deals and strategic partnerships
Visibility, context, prioritization at your speed and scale
Product-agnostic
approach
approach
Don't be confined to vendor-forced security tools. Get a solution that meets your expectations and budgets, and make the most of it with UnderDefense SIEM as a service. Use our skills and expertise with most leading solutions to maximize your security investments.
Professional SIEM
fine-tuning
fine-tuning
Expand your threat detection capabilities with 1000+ new correlation rules included in managed SIEM service by UnderDefense. All rules are selected, implemented, and regularly updated by our SOC experts to improve your threat visibility and save you time.
Quick and cost-effective service deployment
A SIEM in our cloud is ready for log ingestion in your region within 20 minutes, and we connect your log sources and tune detections from there. Improve data accuracy, cut alert noise, and keep up with new attack techniques.
What to look for in a managed SIEM provider
Before you sign, ask every vendor questions that show how the service runs day to day. Four to start with:
MITRE ATT&CK coverage you can verify
Your stack, kept
Documented response times
Data ownership at exit
Our customers say it best
Named as a high Perfomer Incident Response System Security by G2 Crowd
4.8
“Not having to worry about ransomware, alert overload and reporting. Getting a clear view of my security posture, where the threats are coming from and how they are handled. They literally took care of all our problems.”
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Managed Detection
and Response
(MDR)
4.9
“Holistic approach, exceeding requirements with added value and cost savings; smooth transition to Crowdstrike EDR and Elastic SIEM implementation; flexibility with a 120-hour incident response retainer, surpassing the standard 40 hours.”
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Named as a Top Cybersecurity Company 2025 by Clutch
5.0
“UnderDefense impressed us with their ability to tailor their services to our unique needs and challenges. They didn't simply provide a
one-size-fits-all solution, but instead took the time to understand our specific environment and requirements.”
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Frequently asked questions
What is SIEM as a managed service?
Managed SIEM-as-a-service is a more cost-effective alternative to in-house, on-prem installation, setup, and maintenance of a security information and event management solution. In this case, an organization delegates software deployment, fine-tuning, and ongoing support to a third-party provider.
By engaging SIEM managed service providers, organizations gain access to experienced personnel, save expensive internal resources, accelerate time-to-value, and avoid unnecessary staff training and professional development costs.
What does co managed SIEM mean?
A co-managed SIEM solution means a collaboration between an organization and a managed provider. Such an approach combines and augments the strengths of both parties by allowing them to share the responsibility, experience, and knowledge. The client and the managed cloud SIEM solution provider can create a scalable and effective solution that maximizes security risk monitoring, threat detection, and response capabilities amid the ever-evolving threat landscape.
What do UnderDefense managed SIEM services include?
UnderDefense offers a full range of security services and cooperation models that easily adapt to your needs, goals, and budgets. We can cover the entire SIEM-as-a-service process, from software selection, installation, setup, and maintenance to 24/7 remote SOC team and custom reporting. Finally, we are a product-agnostic SIEM as-a-service provider, meaning that you can choose security tech, and we’ll make it work better for your business.
What's the difference between managed SIEM and MDR?
Managed SIEM services run your SIEM platform: log ingestion, parsing, correlation rules, tuning, reporting, and the log retention auditors ask for. MDR focuses on finding and stopping active threats around the clock, usually starting from endpoint telemetry, and includes containment. Many teams need both: the SIEM gives visibility and an audit trail across every log source, and 24/7 detection and response acts on what it surfaces.
Why do I need SIEM if I already have antivirus or firewalls?
Antivirus and firewalls each see one part of your environment and block what they recognize. A SIEM collects logs from all of them, plus identity, cloud, and application logs, and correlates events across sources: a login from a new country, followed by a privilege change and a large data transfer, looks harmless in each tool alone. SIEM also keeps the audit trail that frameworks like PCI DSS require, which asks for at least 12 months of audit log history.
Do I need anything else to run managed or co-managed SIEM?
For SIEM-as-a-Service, no: we provide the sensors and log collectors, and the SIEM license is included. For co-managed SIEM, you keep your current SIEM license and we work inside your platform. In both cases your team gives us access to the log sources you want covered. If you also want endpoint protection or hands-on incident handling, managed EDR and an incident response retainer are available separately.
How much do managed SIEM services cost?
The cost depends on the model you choose (SIEM professional services, co-managed SIEM, or SIEM-as-a-Service with the SIEM tool included), the number of service hours, and the volume and number of your log sources. Current rates and what each model includes are on our managed SIEM pricing page. For an exact figure, contact us with your environment details.
What data do you access when providing managed SIEM services?
We take into account client’s requirements, compliance controls, and other business specifics. That’s why, as a managed SIEM monitoring services company, we leverage only telemetry and incident metadata. We don’t have access to PII and other sensitive data unless the client requests it.
Which SIEM platforms do your managed SIEM services support?
We're vendor-agnostic: we run managed SIEM services on Splunk, Microsoft Sentinel, IBM QRadar, Elastic, Sumo Logic, and LogRhythm, and we work with the security tools you already have. If you're choosing a SIEM from scratch, we help you pick one that fits your data volume, budget, and compliance needs.