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Adedeji Michael
Adedeji Michael

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๐’๐ˆ๐„๐Œ ๐„๐ฑ๐ฉ๐ฅ๐š๐ข๐ง๐ž๐: ๐–๐ก๐š๐ญ ๐ˆ๐ญ ๐ˆ๐ฌ ๐š๐ง๐ ๐–๐ก๐ฒ ๐ˆ๐ญโ€™๐ฌ ๐‚๐ซ๐ข๐ญ๐ข๐œ๐š๐ฅ ๐Ÿ๐จ๐ซ ๐‚๐ฒ๐›๐ž๐ซ๐ฌ๐ž๐œ๐ฎ๐ซ๐ข๐ญ๐ฒ?

SIEM (Security Information and Event Management) provides organizations with detection, analysis, and response capabilities for security events. Evolving from log management, it integrates security event management (SEM) and security information management (SIM) to offer real-time monitoring, analysis, and data logging of security events.

SIEM solutions act as a single system, offering full visibility into network activity for timely threat response. It collects data from various sources, including user devices, servers, network equipment, and security tools like firewalls and antivirus software. This data is analyzed to detect unusual behavior and alert analysts to internal and external threats.

SIEM also stores log data, providing a record of activities to help organizations maintain compliance with industry regulations. Initially used primarily for compliance, SIEM's adoption grew due to regulations like PCI DSS and HIPAA. As advanced persistent threats (APTs) became a concern, SIEMโ€™s usage expanded to cover a broader range of organizations and infrastructures.

๐ƒ๐š๐ญ๐š ๐‚๐จ๐ฅ๐ฅ๐ž๐œ๐ญ๐ข๐จ๐ง
โ€ข Log Management: Aggregates logs from various sources such as network devices, servers, applications, and endpoints.
โ€ข Event Collection: Collects and normalizes security events from diverse sources to create a unified dataset for analysis.

๐ƒ๐š๐ญ๐š ๐’๐ญ๐จ๐ซ๐š๐ ๐ž
โ€ข Scalability: Must handle large volumes of data due to the extensive logging from multiple sources.
โ€ข Retention: Ensures long-term storage for compliance and forensic analysis.

๐ƒ๐š๐ญ๐š ๐€๐ง๐š๐ฅ๐ฒ๐ฌ๐ข๐ฌ
โ€ข Correlation: Identifies relationships between events to detect patterns indicating security threats.
โ€ข Behavioral Analysis: Establishes baselines of normal activity and detects deviations.
โ€ข Anomaly Detection: Uses statistical models, machine learning, or heuristics to identify unusual activity.

๐ˆ๐ง๐œ๐ข๐๐ž๐ง๐ญ ๐ƒ๐ž๐ญ๐ž๐œ๐ญ๐ข๐จ๐ง
โ€ข Real-time Monitoring: Continuously monitors for security events and alerts administrators of potential incidents.
โ€ข Alerting and Notification: Sends notifications through various channels (e.g., email, SMS) based on predefined rules.

๐ˆ๐ง๐œ๐ข๐๐ž๐ง๐ญ ๐‘๐ž๐ฌ๐ฉ๐จ๐ง๐ฌ๐ž
โ€ข Workflow Automation: Automates response actions such as isolating a compromised system or blocking an IP address.
โ€ข Investigation and Forensics: Provides tools for in-depth analysis of incidents, including timeline reconstruction and root cause analysis.

๐‘๐ž๐ฉ๐จ๐ซ๐ญ๐ข๐ง๐  ๐š๐ง๐ ๐‚๐จ๐ฆ๐ฉ๐ฅ๐ข๐š๐ง๐œ๐ž
โ€ข Dashboards and Visualization: Offers visual representations of security metrics and incidents.
โ€ข Compliance Reporting: Generates reports to meet regulatory requirements (e.g., GDPR, HIPAA).

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