What Is A SIEM And How Can It Help Your Organisation?

Security information and event management (SIEM) tools enable businesses to identify, assess, and respond to security threats before they cause operational disruption. SIEMs combine security event management (SEM) and security information management (SIM) capabilities. They gather event log data from many sources, analyse it in real-time to spot suspicious activity, and then generate an alert. To put it simply, a SIEM gives businesses visibility into network activity so they can prevent potential cyberattacks and adhere to regulatory obligations. Using artificial intelligence, SIEM technology has advanced over the last ten years to make threat detection and incident response quicker and smarter. In this article, we’re going to discuss what SIEM is, the role of SIEM in your business, how the tools work, their capabilities, the benefits of using SIEM, and how to implement a SIEM solution.

SIEMs provide real-time event monitoring and analysis as well as tracking and logging of security data for compliance or auditing needs. They also aid companies in identifying potential security flaws and threats before they have a chance to interfere with daily operations. For security and compliance management use cases, it pinpoints user behaviour anomalies and employs artificial intelligence to automate many of the manual operations related to threat identification and incident response. It has become a mainstay in contemporary security operation centres (SOCs). Over time, SIEM solutions have developed into something more than the log management technologies that came before them. Thanks to the power of AI and machine learning, SIEM now provides advanced user and entity behaviour analytics (UEBA). It is a very effective data orchestration solution for handling constantly changing risks as well as reporting and regulatory compliance.

All SIEM solutions facilitate data aggregation, consolidation, and sorting at the most fundamental level to detect threats and meet data compliance standards. While some solutions have a range of capabilities, the majority provide the same fundamental functionality. For security teams to recognize and thwart attacks, SIEM technologies gather, aggregate, and analyse large amounts of real-time data from an organisation’s applications, devices, servers, and users. Security teams can then identify threats by utilising the alerts generated by the SIEM. SIEM technologies offer a central location to view and remediate alerts, but they can be costly and resource-intensive, and organisations will often struggle with the number of alerts generated as well as the remediation process.

Although SIEM solutions’ capabilities vary, they typically provide the following fundamental services:

• Log management

SIEM systems compile a sizable amount of data, arrange it, and then assess whether it reveals any indications of a threat, attack, or breach. It gathers this data from numerous sources throughout the network infrastructure of a company. IT and security teams can automatically manage their network’s event log and network flow data in one centralized location thanks to the real-time collection, storage, and analysis of logs and flow data from users, applications, assets, cloud environments, and networks. To compare their internal security data with known threat signatures and profiles, several SIEM solutions also integrate with third-party threat intelligence feeds. Teams can stop or recognize novel attack signature types through integration with real-time threat sources.

• Event correlation

The information is then sorted to find connections and trends so that possible dangers can be rapidly identified and addressed. Any SIEM solution must provide event correlation. Event correlation uses advanced analytics to quickly find and eliminate possible threats to enterprise security by identifying and comprehending complex data patterns. The manual operations associated with the in-depth analysis of security events are offloaded to the SIEM solution, which considerably reduces the mean time to detect (MTTD) and mean time to respond (MTTR) for IT security teams.

• Incident Monitoring and Security Alerts

SIEM technology keeps track of security-related incidents across a company’s network and sends out notifications and audits of all associated activity. With a variety of use cases, including the detection of questionable user activity, user behaviour tracking, limiting access attempts, and the generation of compliance reports, SIEM systems help reduce cyber risk. SIEM systems can detect all IT environment entities since they allow for centralized control of on-premises and cloud-based infrastructure. This enables SIEM technology to classify unusual activity as it is discovered in the network and to monitor for security incidents across all connected people, devices, and applications. Administrators can be alerted instantly and respond appropriately to mitigate it before it manifests into more serious security risks using customisable, established correlation criteria.

• Compliance Management and Reporting

SIEM solutions are a popular option for businesses that must adhere to various regulatory requirements. They provide the ability to obtain and verify compliance data across the whole corporate infrastructure because of the automated data collection and analysis it offers. The burden of security management can be lessened by SIEM solutions’ ability to produce real-time compliance reports for PCI-DSS, GDPR, HIPPA, CMMC 2.0, and other compliance requirements. These reports can also help identify potential infractions before they become problems. Microsoft Sentinel is a great example of this, which provides pre-built add-ons that can automatically produce reports that satisfy compliance standards right out of the box.

No matter how big or small your company is, it’s critical to take proactive measures to monitor and respond to cyber threats. Enterprises benefit from using SIEM solutions in many ways, and they have become a key part of optimizing security procedures. SIEM tools have several advantages that can improve a company’s overall security posture, including:

• A central view of potential threats and AI-driven automation

As IT teams manage enterprise security, next-generation SIEM systems connect with potent Security Orchestration, Automation, and Response (SOAR) capabilities to save time and resources. These technologies can handle sophisticated threat identification and incident response protocols in much less time than physical teams because they use deep machine learning that automatically adjusts to network behaviour.

• Real-time threat identification and response

As your organisation grows, SIEM active monitoring solutions throughout your whole infrastructure help to boost security posture by reducing the amount of time it takes to detect and respond to possible network attacks and vulnerabilities.

• Advanced threat intelligence

Organisations must be able to rely on solutions that can identify and respond to both known and unidentified security threats given how quickly the cybersecurity landscape changes. Some SIEM solutions, such as Microsoft Sentinel, utilise integrated threat intelligence feeds and AI technology that can successfully mitigate modern security threats:

• Insider threats: Security flaws that result from unauthorized users accessing corporate networks and digital assets Credential compromise may have led to these attacks.
• Phishing attacks: Social engineering attacks that pose as reliable organisations are frequently used to acquire customer information, login passwords, financial information, or other confidential corporate data.
• SQL injections: Malicious code designed to get past security barriers and add, change, or remove records in a SQL database that is executed via a compromised website or application.
• DDoS Attacks: Distributed-Denial-of-Service (DDoS) attacks are made to flood networks and systems with uncontrollable amounts of traffic, rendering websites and servers unavailable as a result
• Data exfiltration: Data extrusion or theft is frequently accomplished via a network asset’s popular or simple-to-crack credentials or by using an Advanced Persistent Threat, or APT.

• Improved organisational efficiency

SIEM can be a key factor in increasing interdepartmental efficiencies because of the enhanced visibility of IT infrastructures it offers. Teams may communicate and work together more effectively when responding to perceived events and security problems when they have a single, unified view of the system data and an integrated SOAR.  

• Regulatory compliance auditing and reporting

Centralized compliance audits and reporting across the whole corporate infrastructure are made possible by SIEM systems. While adhering to stringent compliance reporting rules, advanced automation speeds up the gathering and analysis of system logs and security incidents. For many firms, compliance auditing and reporting is a crucial yet difficult duty. By offering real-time audits and on-demand reporting of regulatory compliance whenever necessary, SIEM solutions significantly cut the resource expenditures necessary to manage this process.

• Conducting forensic threat investigations

When a security issue happens, SIEM systems are excellent for performing digital forensic investigations. Organisations can effectively gather and analyze log data from all of their digital assets with SIEM systems. This enables them to reproduce previous occurrences, examine current ones, look into questionable activities, and put in place more efficient security procedures.

• Greater transparency monitoring users, applications, and devices

Organisations need advanced visibility to manage network hazards from outside the conventional network perimeter as remote workforces, SaaS apps, and BYOD (Bring Your Own Device) policies gain popularity. The visibility of the entire network infrastructure is greatly improved by SIEM systems, which keep track of all network activity across all users, devices, and apps. These solutions also detect risks regardless of where digital assets and services are accessed.

Although SIEM solutions are highly effective and can be a crucial part of a company’s security architecture, they aren’t flawless. SIEM solutions have several drawbacks in addition to their advantages, such as the following: Complex Integration: SIEM solutions must be linked to all cybersecurity tools and systems used by a company, which may consist of a wide range of devices. Because of this, integrating a SIEM with all of these technologies may be difficult and time-consuming and necessitates a high level of security expertise as well as familiarity with the systems in question. Fortunately, Wizard Cyber can drastically improve the SIEM integration process with our managed SIEM service. Our consultants have honed the process over hundreds of integrations, ensuring that your business will be up and running quickly. Rules-Based Detection: SIEM solutions can detect a variety of cybersecurity risks, however, they mostly rely on predetermined rules and patterns. This implies that these systems might overlook brand-new or innovative threats that don’t fit these established patterns. This limitation on detection is why we promote the theory of the SOC Visibility Triad. This triad brings in NDR and EDR capabilities to eliminate any weaknesses that are present within a SIEM solution. Lack of Contextualized Alert Validation: By aggregating data and adding more context to warnings, SIEM solutions can significantly reduce a SOC’s alert volume. But because SIEMs frequently do not perform contextualized alert validation, security teams receive false-positive warnings. As cognitive skills enhance the system’s decision-making powers, AI will play a bigger role in SIEM in the future. Additionally, it will enable systems to expand and adapt as the number of endpoints rises. A SIEM tool must consume more data as a result of IoT, cloud, mobile, and other technologies. AI presents the possibility of a solution that supports more data types and has a sophisticated grasp of the threat landscape as it changes.