SIEM (Security Information and Event Management) is an important tool in cybersecurity. There are several ways for organizations to leverage a SIEM — creating their own, SIEM-as-a-service outsourcing, or licensing an existing SIEM solution — so lets explore each in detail.
What is SIEM? How does a SIEM work?
SIEM gives visibility into events on your network, which then allows you to look out for indicators of suspicious behavior. A true SIEM is a combination of two types of functional tools:
- Security Event Management (SEM) – analyzes log and event data to provide threat monitoring and event correlation
- Security Information Management (SIM) – collects, analyzes, and reports on logs
A SIEM solution usually aggregates data from multiple sources within an organization’s technology infrastructure (firewalls, antivirus, devices, etc.) and analyzes that data to locate suspicious activity. When such events are identified, the SIEM escalates the incident to whomever is responsible for response and remediation. If you’re monitoring the SIEM, it is ultimately your responsibility to respond to events that were identified by your SIEM, including investigation and vetting false positives. If you outsource your monitoring to a service such as Vijilan, your outsourced SOC team will handle most of these tasks for you.
What is Managed SIEM-as-a-service?
When an organization uses managed SIEM-as-a-service, they’re transferring responsibility for the SIEM solution to a third party. In this scenario, the SIEM lives on the cloud, and the third-party vendor (often an MSP or MSSP) handles the monitoring of events that come through on the SIEM. The MSP or MSSP will then provide reports and log events to keep their client in the loop.
Benefits of SIEM/SOC-As-A-Service
As mentioned before, a SIEM solution still requires human eyes and hands to function properly. Even with all of the benefits of automation that SIEM grants, someone has to investigate events and provide remediation in real time. This means a 24/7 security operations center (SOC) — something that most organizations don’t have the desire or the resources to operate themselves.
SOC-as-a-Service providers like Vijilan give organizations the security benefits of a 24/7 SOC without the costs or headaches. Other benefits include:
- 24/7/365 support includes the costs of software licenses and SOC analysts
- Rules and exceptions written by experienced security professionals
- Our proprietary SIEM can be customized to address client needs. Vijilan’s product development teams are continually making upgrades to add features and improve quality of service.