Demystifying SIEM as a Service for Your Organization

by in Security

Cybersecurity is a top priority for enterprise IT teams, as they can’t afford breaches. Data breaches not only undermine the reputation and capabilities of the enterprises but also cost a lot of money in legal obligations. One such prominent incident is the Equifax data breach in 2017 that resulted in USD 425 million in settlements alone.

Demystifying SIEM as a Service for Your Organization.pngIncreasingly, organizations are employing Security Information and Event Management (SIEM) strategies to tackle cyber threats early on to prevent them from turning into data breaches. SIEM, which combines security information management and security event management, helps enterprises correlate events occurring across the IT networks to identify threats and to eventually mitigate them. To effectively manage security information and mitigate threats, the SIEM solution should correlate events in real-time across the organization’s IT infrastructure. However, ineffective SIEM implementation without continuous optimization won’t help the Security Operations Center (SOC). 

On the other hand, choosing and implementing an effective SIEM solution can be complicated and costly. From writing correlation rules to eliminating false positives, organizations need security analysts and specialists to implement and maintain a SIEM strategy that gives significant ROI. On top of everything, the short supply of cybersecurity talent only puts stress on organizations. According to a report by Cybersecurity Ventures, there will be 3.5 million unfilled cybersecurity jobs by 2021.

The Importance of Managed SIEM

Managed SIEM, also referred to as SIEM as a Service in some instances, is a fully-managed service provided by a Managed Security Service Provider (MSSP), in which the MSSP manages the SIEM of an organization end-to-end.

Significant benefits of Managed SIEM include:

Cost Savings: You pay a fixed fee monthly or annually to the managed SIEM service provider, and the service provider handles everything pertaining to the SIEM, such as managing security events, providing compliance reports, deploying security experts to mitigate intrusions, etc. Their expertise in delivering optimized SIEM services helps to improve ROI significantly. Additionally, this reduces the burden associated with self-managed SIEM, such as hiring, training, deploying, maintenance of the underlying infrastructure. 

Asset Discovery: The MSSP will discover and audit the security of all the assets within the perimeter of your enterprise’s IT network. The outsider angle of viewing and thinking will be more useful in the asset discovery process and in uncovering any blind spots. Internal teams are generally used to the environment and might accidentally leave assets uncovered.

Effective Mitigation: Modern SIEM solutions do have automation capabilities that leverage threat intelligence feeds to mitigate emerging threats. When your IT network is attacked with novel threats, however, timely mitigation is critical. An MSSP would be capable of working on such scenarios fast enough, as the MSSP can leverage their experience in dealing with such situations and can put more experts on the task to mitigate attacks. In contrast, if the SIEM is self-managed, the availability of limited knowledge and resources can result in longer Mean Time to Respond (MTR), which may lead to more damage by the attackers.

Faster Implementation: A range of SIEM solutions are available in the market. Internally evaluating for a SIEM solution takes a lot of time and prone to choosing an inappropriate, inefficient solution. Moreover, after finalizing a solution, you may have to train your employees or hire specialists for implementing and maintaining the SIEM solution, and this consumes more time. On the other hand, an MSSP with their years of experience with SIEM can implement an effective solution based on your needs and demands and may put analysts at work within a far less timeframe than you can do internally.

In the end, the extent of benefits and ROI realized through a managed SIEM service really depends on your organization and the capability of the MSSP.

ArcSight ESM — a next-gen SIEM by Micro Focus

When it comes to SIEM implementation, there is no one approach that works for all — as enterprise IT networks are vast and diverse in their own ways. At Micro Focus, we take a holistic, modular approach: Our ArcSight SecOps umbrella of platforms, tools, and frameworks lets enterprises and their MSSPs set up a comprehensive SIEM that works at the speed of IT operations.

ArcSight ESM (Enterprise Security Manager) is a next-gen SIEM solution that helps to implement four primary functions of the SIEM strategy in the following ways:

Connect: In SIEM implementation, a challenging and time-consuming task is to gather data from diverse data sources in the enterprise IT network. We have developed Smart Connectors that help connect with 480 types of data sources. Further, these Smart Connectors integrate with the ArcSight Data Platform (ADP) — also known as the Security Open Data Platform. Then, ADP collects and aggregates the data via Smart Connectors, then cleans and enriches the data and delivers it to the ArcSight ESM for real-time analysis.

Detect: ArcSight ESM analyzes the data and events in real-time to detect threats and abnormal behavior across the IT networks. It is capable of analyzing 100,000 events per second and stays on top of emerging threats with the help of commercial threat intelligence feed from RepSM Plus. These SIEM capabilities bring down Mean Time to Detect (MTD) and Mean Time to Respond (MTR) to a few hours; therefore, helping SecOps teams to mitigate the severity of the intrusions and prevent data breaches.

Respond: ArcSight ESM helps in responding to alerts with simple and fully automated response capabilities available out-of-the-box. With this capability, you can trigger responses on-demand for specific alerts. Furthermore, ArcSight ESM reports back when an additional response is necessary. Also, it integrates with leading Security Orchestration, Automation and Response (SOAR), and workflow solutions to provide more flexibility in responding to events and threats.

Integrate: Arcsight ESM integrates with a wide range of existing security analytics solutions provided by Micro Focus and partners to swap data, alerts, and insights. This approach helps to use a broad range of AI and analytics tools to analyze the security events, which increases efficiency by producing more informative alerts and reducing false positives.


Overall, SIEM is a complex IT process critical to enterprise cybersecurity. At the same time, implementing it timely and efficiently is vital to attain a significant ROI. Whether you take a self-managed approach or a managed SIEM approach, Micro Focus SIEM software solutions and tools help you and MSSPs efficiently implement centralized SIEM that is efficient, scalable, and easy to integrate.


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