CORE SIEM: Co-Managed Intrusion Detection
SIEM operations without your own SOC.
Many organizations collect logs. But often, they lack the time to turn them into reliable signals.
Cybersense CORE SIEM starts exactly there — with assessment and triage by our SOC.
Co-Managed SOC
Avoid the effort of building your own SOC team. Our solution assesses alerts through the Cybersense SOC and supports you with clear, actionable recommendations.
100% On-Premises
Keep your log data inside your own infrastructure. Our solution runs fully on-premises — with no cloud transfer, no third-party processing and full control over your data. Made in Germany.
No Volume-Based Costs
Grow without additional costs based on data volume. Our solution remains predictable — regardless of how much log data you generate or how long you retain it.
See what really matters earlier
Many attacks do not begin with an outage. They begin with subtle signals in your logs.
Cybersense CORE SIEM is our co-managed solution for centrally collecting security-relevant events, analyzing them in a structured way and putting them into the right context with support from the Cybersense SOC.
The result is a detection layer that strengthens your day-to-day security operations: less noise, less unnecessary complexity and alerts that do not simply remain unattended.
To turn log data into actionable signals, CORE SIEM provides the right technical and operational foundation:
- Curated high-value use cases for Windows and Linux security events form the operational core of the solution.
- MITRE ATT&CK as a foundation ensures that detected events can be mapped clearly to tactics and techniques.
- Central log analysis from Windows, Linux, network devices and additional sources creates a unified view of relevant activity across your infrastructure.
This gives you more than transparency into security-relevant events. You get a solution that makes log data usable and relieves your team during assessment and triage.
Less noise. Clearer outcomes.
When a SIEM becomes an in-house project
In our experience, many SIEM projects do not fail because of the technology. They fail in day-to-day operations: too many alerts, too little clear prioritization and too much effort required for review, assessment and operation. What looks powerful on paper often consumes more internal resources than it relieves in security operations.
- Many alerts, but little clear prioritization
- Rule maintenance and alert assessment remain internal responsibilities
- More effort in ongoing operations
The result is often a solution that can do a lot technically, but remains difficult to use in everyday practice.
Why Cybersense CORE SIEM is built differently
With Cybersense CORE SIEM, we focus on signal quality instead of alert overload. The solution works with curated use cases, high-quality signals and operational support from the Cybersense SOC. This gives you relevant alerts in one central place, continuously maintained detection rules and tangible relief in day-to-day operations.
- Curated use cases with high relevance
- Alert assessment by the Cybersense SOC
- Continuous maintenance of predefined use cases
That is the CORE approach: less noise, more relevance and a SIEM that does not just collect data in everyday operations — it takes work off your team’s hands.
The right level of expansion for your environment
Not every organization starts from the same point. That is why Cybersense offers three tiered options for central log management and CORE SIEM — depending on the required scope of functionality, internal responsibility and service level.
All three options are available in combination with „Cybersense Advanced Deception“. Together, they create a reliable foundation for intrusion detection, forensics and compliance.
Which option fits best depends mainly on one question: how much do you want to operate yourself — and how much can you realistically manage internally?
| Category | Windows Logmanagement | Windows & Linux Logmanagement | CORE SIEM (co-managed) |
|---|---|---|---|
| Short description | Central Windows log management based on native Microsoft tools | Open-source log management and SIEM platform for Windows and Linux | Co-managed SIEM with curated use cases and support from the Cybersense SOC |
| Best suited for | Organizations that want to build a solid Windows logging foundation and operate it themselves | Teams that want to centrally analyze Windows and Linux logs and operate the platform themselves | Organizations that want professional intrusion detection without building their own SOC team |
| Operation & alert handling | Operation and alert handling by your team | Operation and alert handling by your team | Co-managed operation with alert handling by the Cybersense SOC |
| Custom extensions | Possible within the scope of Windows log management | Custom dashboards, use cases and data sources possible | Custom data sources and use cases remain possible in a separate area |
| Cost model | One-time implementation, no recurring Cybersense fees | One-time implementation, no recurring Cybersense fees | One-time implementation, annual subscription for the managed service |
In the end, the right choice is not the biggest platform. It is the setup that fits your organization, your resources and the way you run security.
Implementation without a major project
No large-scale SIEM project. A clear starting point.
Our CORE SIEM is designed so that implementation does not turn into an overloaded SIEM project. The solution combines a lean technical platform with support from the Cybersense SOC.
Together with you, we set up CORE SIEM in your environment, connect relevant log sources and create a reliable foundation for the structured detection of security-relevant events.
The path remains manageable: no unnecessary complexity, no lengthy rollout — just a clean entry into SIEM operations that can be used quickly.
The result is a detection layer that delivers clear signals and relieves your team in day-to-day operations.
Operational in three steps
The path to operation follows three clear steps: set up, centrally analyze and assess relevant alerts. This turns implementation into a working detection layer.
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1
Set up and align
We set up CORE SIEM in your environment and align the platform with your infrastructure, your requirements and the relevant log sources.
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2
Collect and analyze centrally
Security-relevant events from Windows, Linux, Syslog and additional sources are collected centrally and analyzed using curated use cases.
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3
Detect, assess and relieve your team
Relevant alerts are assessed with support from our Cybersense SOC. Your team receives clear guidance and can respond faster. Where needed, additional automated SOAR responses can be triggered.
Frequently asked questions about Cybersense CORE SIEM
Cybersense CORE SIEM combines central log analysis with operational support from the Cybersense SOC. This gives you more than a technical platform: you receive relevant alerts with clear assessment and tangible relief in day-to-day operations — without having to build your own SOC team.
All log data remains inside your own infrastructure. Cybersense CORE SIEM runs fully on-premises — with no cloud transfer and no third-party processing. This ensures that you retain full control over your data at all times.
No. Our solution works agentlessly. Windows events are collected via Windows Event Forwarding, while Linux systems are connected through auditd and Syslog. This keeps implementation lean and ongoing operational effort low.
No. There is no volume-based billing — neither for incoming log data nor for longer retention periods. Your costs remain predictable, even as your environment grows.
Alerts are collected around the clock — including outside regular service hours. Cybersense CORE SIEM is operated by default with a 10x5 service level. Events are not lost; they are prioritized and processed when service hours resume. For critical incidents, additional automated SOAR responses can take effect immediately.
Yes. In addition to the content managed by Cybersense, you have your own dedicated area where you can connect additional data sources and implement your own use cases — independently of the area managed by us.
Yes. Cybersense CORE SIEM supports you with requirements such as NIS2, GDPR, the German IT Security Act 2.0, as well as standards such as ISO 27001 and BSI IT-Grundschutz. By centrally collecting and retaining security-relevant logs, you create a reliable foundation for logging, detection and auditability.
Cybersense Advanced Deception and CORE SIEM complement each other as a unified detection layer. While CORE SIEM analyzes security-relevant logs and makes attacks visible, Advanced Deception provides additional signals through strategically placed traps and decoys. Together, they create significantly greater detection depth.
Do you have any questions? Would you like a demo?
We look forward to hearing from you.
Your contact partner
Michael Pütz