What is Microsoft Sentinel?

It can sometimes feel like every week brings a new cyber threat. From sophisticated malware to employees accidentally breaching security, staying ahead requires more than basic measures; businesses need advanced tools that detect, analyse, and respond to risks instantly.

For decision-makers, making the right investments that safeguard data and maintain trust while staying compliant with regulations is often headache-inducing.

Enter Microsoft Sentinel.

What is Microsoft Sentinel?

Think of Microsoft Sentinel as a command centre for your security needs, bringing together insights from across your digital footprint. Sentinel is a cloud-native tool that combines Security Information and Event Management (SIEM) with Security Orchestration, Automation, and Response (SOAR). It gathers data from users, devices, applications, and infrastructure, all in one place.

Sentinel’s real power lies in its ability to detect threats as they happen and respond automatically. With Microsoft’s extensive threat intelligence backing it, Sentinel is a 24/7 partner to your security team. Its compatibility with Microsoft products and third-party apps also makes it adaptable to complex, multi-cloud environments.

The key features are:

• Data Collection at Scale: Sentinel integrates with data sources like Microsoft 365, Azure, and third-party tools to collect data from your entire digital ecosystem.
• Advanced Threat Detection: Sentinel uses machine learning to understand patterns (and therefore any unusual usage), alongside Microsoft’s global security expertise, to identify threats that might slip past traditional security systems.
• Automated Response: With customisable playbooks, Sentinel automates incident responses, saving valuable time and resources.
• Centralised Security Management: Cloud-based and scalable, it offers a unified view of security events across on-premises, cloud, and hybrid environments.

How Do These Features Help Businesses?

At its core, Microsoft Sentinel helps businesses manage security proactively rather than reactively. It does this through:

Real-Time Threat Detection

Sentinel is constantly monitoring data flows, identifying abnormal patterns that might hint at security issues. Using machine learning and global threat intelligence, it can detect even the subtlest malicious activities.

Incident Investigation and Response

Visualising attack chains and scoping threats is made easy with Sentinel’s built-in tools. AI-driven investigation speeds up analysis, letting your team focus on strategic responses rather than sifting through data.

Automated Incident Response

Custom playbooks allow businesses to automate routine responses to known threats. Whether isolating compromised devices or notifying the team, Sentinel ensures a rapid, consistent response.

For instance, if a brute force attack is happening on a server, that server will block the IP address and notify all other servers on the network to block that IP too.

Data Collection and Analysis

Sentinel integrates with multiple data sources, pulling information from cloud, on-premises, and hybrid environments to provide a centralised view of security health.

Compliance and Reporting

For industries with strict regulations, Sentinel’s compliance reporting helps document incidents, actions, and overall performance. This feature proves particularly beneficial in finance, healthcare, and government.

In short, Sentinel acts as an intelligent, efficient partner in managing and responding to security risks across your digital infrastructure.

Where Does Microsoft Sentinel Store Data?

Microsoft Sentinel relies on Azure’s cloud infrastructure for data storage, specifically Azure Log Analytics.

Sentinel’s storage can scale to handle huge volumes of data from diverse sources, which is especially helpful if your business has both cloud and on-premises environments. Azure ensures data integrity, encryption, and access controls for robust security.

You can also set retention policies based on compliance needs. Azure complies with standards like GDPR and ISO 27001, so businesses in regulated industries can rely on Sentinel to help meet global security and privacy requirements.

How Much Does Microsoft Sentinel Cost?

Microsoft Sentinel has flexible pricing that varies depending on your usage needs. The main cost drivers are data ingestion and retention, with extra fees for automation and playbook usage.

Sentinel charges per gigabyte (GB) of data ingested, with a “Pay-As-You-Go” rate at around £4.14 per GB (depending on your location). For businesses ingesting a high volume of data, Microsoft offers Commitment Tiers, which reduce the per-GB price as data volume increases.

For data retention, Sentinel includes a 90-day retention period at no extra charge. For businesses needing longer retention, additional costs are based on Azure Monitor’s retention pricing.

Sentinel’s automation, like playbooks built on Azure Logic Apps, incurs additional costs. Monitoring these workflows can help manage expenses.

More details can be found on Microsoft Sentinel’s pricing page.

Some Cost-Saving Tips:

• Estimate Data Needs: Using past data can help you pick the right Commitment Tier.
• Optimise Retention: Match retention settings to your compliance needs for cost efficiency.
• Manage Automation: Regularly review and adjust automated workflows to keep expenses in check.

Is Microsoft Sentinel Right for Your Business?

Investing in a security solution is a significant decision. Microsoft Sentinel offers valuable benefits, but whether it’s right for your business depends on several factors.

1. Complexity of Your IT Environment: If your business has a large digital footprint with multiple data sources, Sentinel’s centralised monitoring and automation can be game-changers.
2. Compliance Needs: For sectors with strict compliance regulations (e.g., finance, healthcare), Sentinel’s reporting and data retention features align with frameworks like GDPR and ISO 27001. Sentinel’s audit logging and custom retention make it ideal for businesses needing to keep up with evolving standards.
3. Current Security Setup and Future Goals: For companies using Microsoft 365, Azure, or other Microsoft tools, Sentinel integrates seamlessly, enhancing security without complicated setups. And with its scalability, Sentinel is designed to grow alongside your business.
4. Budget Considerations: Sentinel’s flexible pricing adapts to your organisation’s needs, but it’s important to assess data ingestion and retention needs to avoid surprises. Commitment Tiers and optimised automation workflows help make it more budget-friendly.

Prepare Your Business Today for Tomorrow’s Threats

If your organisation wants to streamline threat detection, bolster incident response, and comply with regulatory standards, Sentinel is an attractive choice.

At AAG, we know how important cyber security is in modern business. Our experts are here to help you assess your options and design a security strategy that matches your unique needs. Contact us today to get started.