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Security Information and Event Management (SIEM)

SIEM enables the analysis of host-related and network-related security events as part of alert investigations or interactive threat hunting. SIEM Tools provide a central place to collect events and alerts – but can be expensive if it is using EPS license model and customers report that it is often difficult to resolve problems due to retention restriction, query response delay and unsupported data source. SIEM is the single pane of glass of any enterprise organisation for early attack detection alert and should have comprehensive coverage on host event analysis and network event analysis for proactive investigation and threat hunting at scale and speed. The central collection of incident data from all devices on the network provides one dataset for security analysts to conduct their investigation instead of going through each individual system.

Features of SIEM

  • Basic Security Monitoring – The fundamental responsibility of SIEM can be said as collection, normalization, correlation, and analysis of logs.
  • Security Incident Detection – The secondary function of SIEM is to alert security teams to anomalies or policy violations in an automated way with clear information.
  • Advanced Threat Detection – SIEM integrates intelligence feeds that provide data on current threats that SIEM uses to identify threats.
  • Notifications and Alerts – SIEM can be tuned to alert security analysts when policies have been violated or threats have been identified.
  • Forensics & Incident Response – SIEM can store logs so that when a breach or incident occurs, IR teams and digital forensic investigators have the ability to perform root cause analysis.
  • Compliance Information – SIEM is increasingly being used to demonstrate compliance by providing auditing and reporting concerning log-in data, user information, IP address information, and data flow.
Log Monitoring and Management With SIEM

SIEM handles the two following jobs that prior to today’s SIEM was handled individually:

  • SIM – Security information management – Long-term storage as well as analysis and reporting of log data. This was and is still tricky and time-consuming if you must build your own connectors to your IDS/IPS, Firewalls, DLP solutions, Application servers and so many other log-generating assets in your IT environment. Most SIEM has some connectors out of the box today.
  • SEM – Security event manager – Real-time monitoring, correlation of events, notifications, and console views. This is the key benefit of SIEM because a good SIEM will turn data into insights and a great SIEM, tuned correctly will turn insights into visual dashboards to assist analysts in uncovering anomalies and threats.

The Benefits and Advantages of SIEM

  • Help Understand Security Threats. Plainly, the reason that companies need SIEM systems to monitor logs and report suspicious events is that most organisations generate far too much event data for any human to be able to make sense of it.
  • Correlate Data to Provide IOC’s. Ok, this is a little like benefit #1, however, beyond just collecting, normalizing and analysing logs, SIEM can ingest threat intelligence feeds and many are now integrating machine learning to understand what a real indicator of compromise (IOC) is and what it isn’t.
  • Data Presentation. SIEM can present data in a variety of ways including out-of-the-box reporting and customizable reports. The advantage is that analysts can visually spot trends, anomalies, traffic spikes, and so much more. The reports and dashboards can serve as the cornerstone information hub to determine where and how to drill down on any suspicious activity.
  • Compliance Assistance. Finally, with GDPR, CCPA, HIPAA, PCI-DSS, SIA, SAMA and so many other pieces of compliance legislation on the horizon, SIEM can make reporting on how organisations are safeguarding PII, who is accessing data, and from where.

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