Cetas Blog Post

What is SIEM?

November 15, 2022

SIEM is a solution that assists businesses in detecting, assessing, and mitigating security risks before they affect regular operations.



SIEM is an acronym for "security information and event management." It is a combination of SIM and EMS (SEM). 

This feature enables continuous event monitoring and analysis and the recording of security data for subsequent use in audits or regulatory inspections.

SIEM technology provides threat detection, compliance, and incident management by collecting and analyzing security events and a broad range of other event and contextual data sources in near real-time and historically. 

The core parts include:
• Log event collection and administration skills.
• Data analysis capabilities were acquired from various sources.
• Operational capabilities (such as incident management, dashboards, and reporting).

SIEM is a solution that assists businesses in detecting, assessing, and mitigating security risks before they affect regular operations.

SIEM refers to a system that integrates two distinct but related disciplines, security information management (SIM) and security event management (SEM). 

The SIEM system takes event log data from various sources, uses real-time analysis to identify deviations from the norm, and reacts accordingly.

In a nutshell, SIEM discloses what's happening within a company's network, enabling it to react quickly to intrusions and satisfy compliance requirements.

During the past decade, artificial intelligence (AI) has been applied to enhance threat detection and incident response in SIEM systems, making them more complex and faster.

SIEM is a technology for monitoring possible security risks and defects in a network to prevent harm to a company from occurring. 

It detects unusual user activity and uses AI to automate many time-consuming procedures associated with recognizing risks and reacting to crises. 

As a result, it has become an essential component of cutting-edge SOCs for managing security and compliance use cases.

SIEM has become a more effective tool than prior log management systems since it has evolved. 

SIEM has improved its user and entity behavior analytics thanks to artificial intelligence and machine learning (UEBA). 

A robust data orchestration system with aims such as regulatory compliance and reporting and dynamic hazard management.

How does SIEM work?

Massive amounts of data from an organization's applications, devices, servers, and users are collected, aggregated, and analyzed in real-time by SIEM systems. 

SIEM systems employ previously specified criteria to assist security teams in spotting vulnerabilities and producing warnings.

SIEM systems do some degree of data collecting, aggregation, and sorting to detect risks and fulfill data compliance rules. Some systems can have more sophisticated features than others, but in general, they all have the following:

1: Event Correlation and Analytics

Event correlation will be a key component in any reputable SIEM system. Event correlation uses cutting-edge analytics to uncover and comprehend complicated data patterns. 

Potential dangers to a company's security can be recognized and eradicated more rapidly due to the insights acquired. 

SIEM systems dramatically decrease MTTD and MTTR by reducing the need for IT security staff to execute time-consuming manual operations such as those connected with a complete investigation of security events.

2: Management of Compliance and Reporting

SIEM solutions are a popular option for businesses that must meet a broad range of needs. 

SIEM is a useful solution for obtaining and reviewing compliance data across the whole corporate infrastructure since it provides automatic data collection and analysis. 

SIEM systems can create real-time compliance reports for standards like PCI-DSS, GDPR, HIPPA, and SOX. 

Security management is made easier, and any infractions can be quickly discovered and rectified. Many SIEM systems have out-of-the-box extensions that produce reports specially targeted to suit compliance needs. 

This kind of additional capacity is available in many SIEM solutions.

3: Managing Logs

SIEM allows a company's whole network to be mined for event data from several sources. 

Users, apps, assets, cloud environments, and networks generate logs and flow data in real-time. 

Consequently, IT and security employees now have a centralized area to monitor their network's event logs and traffic statistics.

A lot of security systems now integrate connectivity to other threat intelligence sources. 

The solutions can then compare their internal security data to recognized threat profiles and signatures. 

By integrating with real-time threat feeds, teams can resist developing attack signatures or uncover them before they cause harm.

4: Security Alerts and Incident Monitoring

SIEM systems provide for the centralized administration of both on-premise and cloud-based infrastructure and the identification of all entities present in an IT environment. 

As a result, the SIEM system can categorize security events as they occur across all users, devices, and applications connected to the network. 

Administrators can be notified of possible danger timely by using specific correlation criteria that can be updated as required, enabling them to take remedial action before the situation evolves into a more significant security concern.
Benefits of using a SIEM
SIEM technologies provide a variety of advantages, many of which can assist a business in improving its overall security posture, including the following:
• Advanced threat intelligence
• Regulatory compliance audits and reporting
• Greater transparency in monitoring people, apps, and devices

Implementing SIEM active monitoring solutions throughout your infrastructure reduces the time required to discover and respond to possible network threats and vulnerabilities. 

Having this in place helps to secure the firm as it expands.

SIEM systems serve enterprises of all sizes by combining compliance audits and reporting. 

Using cutting-edge automation, it can be easier to generate and analyze system logs and security events. 

Consequently, fewer internal resources are required to fulfill stringent compliance reporting requirements.

Next-generation SIEM systems include Advanced Security Orchestration, Automation, and Response SOAR capabilities. 

Consequently, IT departments can better manage corporate security while saving time and money. 

Advanced machine learning approaches enable these systems to automatically adapt to network activity, enabling them to perform complicated threat identification and incident response operations faster than a human team would.

SIEM's better visibility of IT infrastructures has the potential to play a key role in boosting the efficacy of cross-departmental cooperation. 

Teams can more readily communicate and coordinate reactions to events and security issues with a consolidated view of system data and an integrated SOAR.
Reinvent Security Operations with Cetas XSIAM
Threat detection, hunting, and response can be automated to reduce complexity and save time for your security operations center (SOC) teams. With Cetas XSIAM, you get:
• 95% Mitre Attack Framework Coverage
• 95% Reduction in False Positives
• 90% Decrease in MTTR

If security operations successfully confront today's dangers, they will need a new strategy. "XSIAM, or extended security intelligence and automation management," is a new discipline that employs artificial intelligence and automation to transform traditional methods into risk management. 

XSIAM was created to be the future's completely autonomous security platform, capable of detecting and responding to attacks in near real-time for much-improved protection. 

Security workers no longer have to depend on manual ways of managing information and events, thanks to XSIAM. 

As a result, no supervisors will be required.


SIEM will depend more on AI in the future as the inclusion of cognitive capacities increases the system's decision-making power. 

Systems will also be able to adapt and evolve as the number of endpoints grows. 

As the dangerous environment evolves, AI offers the option of a solution that supports more data types and a thorough understanding of the threat environment. 

This is crucial because the Internet of Things (IoT), the cloud, and mobile devices are increasing the amount of data that a SIEM solution must handle.