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With a vast range of security technologies, tools and platforms now widely available in the market for security teams, it is ever more complex to decide which tools are best to deploy to suitably defend the organization’s infrastructure.
Within security structures of larger organizations, it is common to have a security information and event management (SIEM) tool in place, alongside or sitting on top of several other systems, but how can it benefit from implementing a Security Orchestration, Automation and Response (SOAR) solution on top of its existing SIEM infrastructure to further manage its security operations and incident response processes and tasks? Let’s find out.
In simple terms, a SIEM collates and analyses the information generated from various sources, identifying issues and raising the initial security alerts. Alert triage is then often carried out by security analysts in a very manual and non-methodical way and subject to mistakes and errors due to the sheer volumes and number of repetitive and mundane actions required, often not being able to fulfill all of them. One of the original core drivers for SIEM technology was to ingest and process large volumes of security events; a function which SIEMs continue to excel at today. However, although some advanced SIEMs have incorporated additional features, such as integration with threat intelligence and other third-party solutions, many SIEMs are still largely focused on data ingestion and presentation.
Another fundamental limitation of many SIEM solutions is that the communication between the SIEM and other third-party products is unidirectional. SIEMs were designed to ingest information, however, support for two-way communication with third-party tools is often limited at best. In most cases, this severely limits a SIEM’s ability to carry out actions beyond the initial alert; this is where a SOAR solution can add significant additional value.
A SOAR solution, on the other hand, is often used in conjunction with a SIEM, however, it is not dependent on having a SIEM in place. A SOAR solution is not intended to be a SIEM replacement, instead, when used in conjunction with a SIEM it is intended to be utilized to help security teams automate and orchestrate actions across their entire portfolio of security products in a bidirectional manner to reduce analyst workload, alert fatigue, time to respond and remediate and reduce overall risk.
Sitting on top of the SIEM, the SOAR solution would orchestrate and automate multiple third-party tools from different vendors, whereas the SIEM would be used to collate and analyze data and generate the alert, which is just the first step of a multistep process. SOAR technology would then be leveraged once the initial security threat had been detected and the security alert generated by the SIEM.
The amount of security events that cybersecurity professionals deal with on a day to day basis can be overwhelming and analysts often have to delve through a deluge of data to find what they are looking for, ultimately preventing them from tackling incidents more efficiently. SIEM tools collect large amounts of information from different areas of the IT framework, but too much information sometimes is just as crippling as not enough information.
A SIEM used in isolation helps to centralize information gathered from various other security tools being used, but it can often lead to an overwhelming amount of information, that then needs to be filtered and correlated to eliminate the false positives to leave only the critical events that need to be acted upon. It can produce a vast quantity of security alerts, leaving security analysts inundated, not knowing which alerts should take priority and be tackled first. This will have a negative impact on the security team, with what is already considered a scarce resource.
Most security teams do not realize the sheer number of alerts that will be received and the resulting alert fatigue until they have deployed a SIEM and a full advanced threat detection architecture. There is a common misconception that a SIEM will reduce the number of incoming alerts by applying correlation rules. However, this is not always the case and correlation rules may only reduce a small percentage of the total number of alerts. Most enterprises will see a clear business need for implementing a SOAR solution to help reduce alert fatigue, orchestrate the organization’s different security tools and automate menial tasks.
Integrating a SIEM with a SOAR solution combines the power of each to create a more robust, efficient and responsive security program. Taking advantage of the SIEM’s ability to ingest large volumes of data and generate alerts, the SOAR solution can be layered on top of the SIEM to manage the incident response process to each alert, automating and orchestrating a number of mundane and repetitive tasks that would take many manual man hours to complete.
SOAR solutions such as IncMan from DFLabs support SIEM integrations and present a comprehensive solution for all organizations that are trying to create a successful and affordable security program, by effectively reducing the noise generated by a high number of alerts and sometimes less than reliable threat intelligence. This can ultimately enable security teams to minimize incident resolution time, maximize analyst efficiency and overall increase handled incidents.
The combined power of a SOAR solution working alongside a SIEM is crucial to ensure that alerts do not go untouched or ignored. More importantly, it ensures all alerts are dealt with in a timely manner and are acted upon following a standard set of consistent and repeatable practices and procedures.
A SIEM is a crucial tool within any security infrastructure, amongst other tools. However, it is critical to keep in mind what a SIEM is designed to achieve, and what gaps may still exist within the security program. The combination of a SIEM and a SOAR solution can transform the security operations and incident response capability and take it from one level to the next, in an intelligent and predetermined manner, so why wait? To learn more about the topic read our new whitepaper "How to Leverage Your Existing SIEM Tool with SOAR Technology"
John Moran / 3 Jul 2018
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