SIEM (Security Information and Event Management) is a security solution that centralizes threat detection, compliance monitoring, and incident response across enterprise environments through automated log collection, correlation, and analysis.
SIEM platforms collect, process, correlate, and respond to security data from multiple sources to generate actionable security intelligence. They aggregate logs and events from across the IT environment—including endpoints, network devices, applications, cloud services, and security tools—into a central platform where analysts can detect, investigate, and respond to threats.
How SIEM Works
Data Collection: Agent-based collectors capture Windows Event Logs, Linux Syslog data, and application logs from endpoints, while network packet capture and API integrations gather intelligence from cloud services and security tools. Log parsing standardizes disparate data sources using formats like the Common Event Format (CEF).
Correlation and Detection: SIEM engines apply correlation rules, statistical analysis, and behavioral analytics to identify patterns across multiple data sources that indicate attacks. Threat intelligence feeds add context to improve detection accuracy by linking events to known malicious indicators.
Alert Generation and Investigation: When correlation rules fire, the SIEM generates alerts that analysts investigate through interactive dashboards, timeline views, and forensic query tools. Modern SIEMs include user and entity behavior analytics (UEBA) for insider threat detection.
Compliance Reporting: SIEMs generate audit reports and compliance dashboards for regulations including PCI DSS, HIPAA, SOX, and GDPR, simplifying the documentation burden for regulated organizations.
SIEM Evolution: SIEM technology has evolved from traditional log management to security analytics platforms that integrate with SOAR systems and AI technology for effective cyberattack detection and response. Modern SIEMs incorporate machine learning models for anomaly detection and automated investigation capabilities.
Pangratis integrates with SIEM platforms to provide email threat telemetry that enriches security monitoring, giving SOC teams comprehensive visibility into email-based attacks within their broader security operations workflows.