Lightweight SIEM

A SIEM (Security Information and Event Management) solution is software that helps security teams make sense of the massive volumes of security-related logs and events produced across an IT environment.

Instead of manually reviewing logs and events from firewalls, antivirus tools, EDR agents, email filters, and countless other systems, a SIEM ingests all this data into a single platform, normalizes it, correlates, and creates alerts.

This enables the automatic identification of suspicious patterns, unwanted behavior, and cyberthreats, which are then handled by security teams, system administrators, or response-automation platforms such as SOAR.

By centralizing and analyzing events in real time, a SIEM enables early detection of threats, easier investigations, and faster incident response. Without such a tool, critical warning signs often remain hidden in an overwhelming sea of raw logs, increasing the risk of missing early indicators of an attack.

Yes. Logmanager is an agentless SIEM solution, collecting logs via standard protocols such as Syslog. This makes deployment fast and maintenance simple. Where deeper insight is required, for example, extended visibility into Windows, Logmanager offers its own centrally orchestrated agents to make the deployment and configuration fast and simple.

Some practical examples of what security professionals do with SIEM tools include:

• Oversee change and patch management – SIEMs help ensure that all updates and patches are applied properly. They track configuration changes, identify whether an incorrect update is causing system instability, and trigger alerts if critical security patches are missing or if an update fails.
• Monitor system health and performance – SIEM allows IT teams to set up alerts for high CPU usage, memory leaks, low disk capacity, or unusual traffic spikes. It can track network latency and bandwidth usage and identify bottlenecks by correlating traffic logs from routers, firewalls, and other devices.
• Investigate security incidents – Once an alert is raised, a security professional can investigate the origin of the problem, evaluate its scope and impact, and choose an appropriate response. For example, if a database suddenly crashes, the SIEM can reveal whether the cause was a failed update, misconfiguration, or overload.
• Monitor user activity – Track when employees access internal systems or sensitive files outside normal working hours. Detect misuse of company resources, such as running unauthorized apps on work devices.
• Ensure compliance with IT policies – Verify that employees are using corporate VPNs as required. Monitor cloud application usage to prevent unauthorized SaaS adoption (shadow IT).
• Track device usage – Ensure that all connected devices (laptops, workstations, mobile devices) are properly managed. SIEM can confirm the right software is installed, send alerts about license expirations, and detect unauthorized software installations.
• Identify recurring issues (e.g., VPN failures, Outlook crashes) and take preventive action.

In short, EDR protects the endpoints, SIEM connects the dots across all systems. Most organizations benefit from using them together, EDR stops threats at the device level, while SIEM ensures nothing slips through the cracks by giving visibility across the entire network.

Simply put, both EDR and SIEM are cybersecurity tools, but they focus on different parts of the security puzzle.

EDR (Endpoint Detection and Response) is designed to protect individual devices such as laptops, servers, or mobile phones. It continuously monitors activity on those endpoints, looking for signs of malware, ransomware, or suspicious behavior. When it detects a threat, EDR can automatically isolate the affected device and provide detailed forensic data to help stop the attack before it spreads.

Some notable examples of EDR systems include Sophos Endpoint, CrowdStrike Falcon, and SentinelOne’s Singularity.

SIEM (Security Information and Event Management), on the other hand, provides a centralized view of the entire IT environment. It collects logs and events from many sources (firewalls, servers, applications, cloud services, and even EDR tools) and correlates them to identify patterns that might signal an attack or unwanted behavior. SIEM helps security teams detect threats across the whole infrastructure, meet compliance requirements, and respond faster with full context.

Examples of SIEM systems include IBM QRadar, Splunk or ArcSight for enterprise-grade deployments and Logmanager lightweight SIEM for small and mid-sized organization.

At a glance, the main difference between SOAR and SIEM is:

• SIEM tells you what’s happening in your environment.
• SOAR helps you do something about it.

SIEM and SOAR are cybersecurity tools that are often used together but serve different roles.

SIEM (Security Information and Event Management) is a security management solution which detects and analyzes threats using log data, and creates alerts for security teams, systems administrators or response-tools.

SOAR (Security Orchestration, Automation, and Response) platforms don’t focus on detection. They streamline and automate the incident response process based on detections and alerts generated by other sources, such as SIEM systems.

SOAR is sometimes mistakenly seen as a replacement for SIEM, but in reality the two serve different purposes with some areas of overlap. In practice, they complement each other, and for many organizations, especially larger ones, the real value comes from combining both.

SIEM systems collect and correlate data from across the IT stack in real time, flagging suspicious patterns and prioritizing alerts. These alerts can then be fed into a SOAR platform, which automates and orchestrates the response.

Working together, these systems strengthen detection and response capabilities, reduce the time needed to contain threats, and improve overall operational efficiency.

If you want a deeper dive into this topic, check out our article dedicated to the SOAR vs. SIEM comparison.