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SIEM (Security Information and Event Management) tools are essential for monitoring, detecting, and responding to security threats in real time. Below are some of the leading SIEM tools widely used in the cybersecurity industry.
Popular SIEM Tools
- Splunk – A powerful data analytics platform that provides real-time visibility into security data.
- IBM QRadar – Uses AI to detect and prioritize threats.
- Microsoft Sentinel – A cloud-native SIEM with built-in AI for threat detection.
- LogRhythm – Combines SIEM, log management, and network monitoring.
5. Wazuh – Open-source SIEM with XDR capabilities.
- AlienVault (AT&T Cybersecurity) – Unified SIEM and threat intelligence.
- Elastic SIEM – Part of the Elastic Stack, offering scalable log analysis.
- Fortinet FortiSIEM – Integrates security and performance monitoring.
You Should Know:
1. Splunk Commands & Queries
Splunk is widely used for log analysis. Here are some essential commands:
<h1>Search for failed login attempts</h1> index=security sourcetype=linux_secure "Failed password" <h1>Top 10 source IPs generating errors</h1> index=netfw | top limit=10 src_ip <h1>Extract events with a specific error code</h1> index=app_logs error_code=500
#### **2. Wazuh Installation & Key Commands**
Wazuh is an open-source SIEM with strong threat detection capabilities.
<h1>Install Wazuh on Linux (Ubuntu/Debian)</h1> curl -sO https://packages.wazuh.com/4.7/wazuh-install.sh && sudo bash ./wazuh-install.sh -a <h1>Check Wazuh agent status</h1> systemctl status wazuh-agent <h1>Search for alerts in Wazuh</h1> /var/ossec/logs/alerts/alerts.json
#### **3. Microsoft Sentinel KQL (Kusto Query Language)**
Microsoft Sentinel uses KQL for threat hunting:
// Detect brute-force attacks SecurityEvent | where EventID == 4625 | summarize count() by Account | where count_ > 5 // Find suspicious PowerShell execution SecurityEvent | where EventID == 4688 and CommandLine contains "powershell"
4. Linux Log Analysis with grep & awk
SIEM tools rely on log files. Key Linux commands for log analysis:
<h1>Search for SSH failed attempts</h1>
grep "Failed password" /var/log/auth.log
<h1>Extract unique IPs from logs</h1>
awk '{print $1}' /var/log/nginx/access.log | sort | uniq -c | sort -nr
### **What Undercode Say**
SIEM tools are critical for modern cybersecurity operations. Whether using Splunk, Wazuh, or Microsoft Sentinel, mastering log analysis and querying is essential. Automation, AI-driven detection, and real-time monitoring help organizations stay ahead of threats.
#### **Expected Output:**
- Splunk logs for security events.
- Wazuh alerts for intrusion detection.
- Sentinel KQL queries for Azure environments.
- Linux log parsing for on-prem security checks.
For further learning, check:
References:
Reported By: Ethical Hacks – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
