What is AWS Security Hub? Definition and How It Works

Consider this scenario: you oversee securing a large, and fast-paced online store. For this, you have multiple systems, from payment processing to customer data, all running on Amazon Web Services (AWS). Given this scenario, do you wonder what if there was a way to simplify this, to have everything in one place? That’s where AWS Security Hub comes in. It centralises your security findings, giving you a comprehensive view of your AWS environment, so you can spot issues quickly and efficiently.

With AWS Security Hub, you can automate security checks, manage compliance, and take proactive measures to protect your systems. In this blog, we’ll explore exactly how this hub works and how it can save you time while keeping your environment safe. Let’s dive into the details!

Table of Contents

1) What is AWS Security Hub?

2) How AWS Security Hub Works?

3) Benefits of AWS Security Hub

4) Common use Cases of Security Hub

5) Pricing Details of AWS Security Hub

6) How is Security Hub Enabled?

7) Conclusion

What is AWS Security Hub?

AWS Security Hub is a cloud-based security service by Amazon Web Services (AWS). It helps organisations centralise, manage, and automate security alerts and compliance checks across their AWS environment.

Instead of switching between multiple tools and services, Security Hub provides a single, unified dashboard that brings together findings from AWS services. Some of them are Amazon GuardDuty, AWS Config, AWS Firewall Manager, and supported third-party tools.

1) Centralised security findings view

2) Automated compliance monitoring

3) Built-in security best practices

4) Custom insights and filters

5) Integration with AWS tools

How AWS Security Hub Works?

AWS Security Hub works by centralising and automating your security monitoring across your entire AWS environment. It brings together all your security findings into one unified view. This helps you quickly identify and respond to potential threats or compliance issues.

Here’s a step-by-step approach:

1) Aggregates Security Data from Multiple Sources

It integrates with third-party tools like CrowdStrike, McAfee, and Trend Micro to give you a full picture of your security posture. Security Hub collects findings from various AWS services such as:

a) Amazon GuardDuty as in threat detection

b) AWS Config like resource compliance

c) AWS Inspector like vulnerability scanning

d) Firewall Manager and others

2) Normalises and Organises Findings

All collected data is normalised into a standard format like AWS Security Finding Format (ASFF). This ensures consistency across different tools, making it easier to:

a) Understand alerts

b) Compare results

c) Prioritise actions

3) Runs Automated Compliance Checks

It highlights areas of non-compliance and provides guidance on how to fix them, helping you meet regulatory and internal standards. Security Hub performs continuous compliance checks against industry standards such as:

a) CIS AWS Foundations Benchmark

b) AWS Foundational Security Best Practices

4) Presents a Centralised Security Dashboard

This helps security teams quickly understand and act on the most critical issues. All findings are displayed in a single dashboard that provides:

a) Summary of current security issues

b) Compliance scores

c) Visual insights into high-risk resources

d) Drill-down capability for specific issues

5) Enables Automation and Response

If a specific vulnerability is found, you can trigger a Lambda function to isolate the resource or alert the security team instantly. Areas to focus:

a) Integrates with Amazon EventBridge and AWS Lambda

b) Automates responses to security findings and compliance issues

c) Triggers actions like isolating resources or notifying teams

d) Reduces response time and enhances incident management

6) Supports Multi-Account and Multi-Region Monitoring

Here are the ways it supports both the multi account and region accounting.

a) Integrates with Amazon EventBridge and AWS Lambda

b) Automates responses to security findings and compliance issues

c) Triggers actions like isolating resources or notifying teams

d) Reduces response time and enhances incident management

Benefits of AWS Security Hub

AWS Security Hub isn’t just a tool but a smart solution. It streamlines security operations, automates checks, and boosts your cloud defence strategy. Let’s discuss the core benefits:

Simplified Security Management

Managing cloud security can feel overwhelming when alerts and findings come from different services and tools. AWS Security Hub consolidates security data into a single view, so you don’t have to jump between dashboards.

It brings in findings from services like GuardDuty, Config, and Inspector, along with third-party tools making it easier to identify, assess, and prioritise threats from one place.

Why it Matters: You spend less time searching and more time securing.

Automated Best Practices

Security Hub continuously runs automated checks against AWS security standards and frameworks like the CIS AWS Foundations Benchmark.

These checks evaluate configurations and behaviours across your AWS accounts to ensure they meet best practices. You’re alerted when something’s off, allowing you to take quick corrective action.

Why it Matters: Proactive protection reduces human error and improves consistency across environments.

Improved Compliance

With ever-changing regulations, maintaining compliance can be challenging. Security Hub helps by automatically assessing resources against selected compliance frameworks. It also helps in visualising your compliance posture in real time.

Whether you're aiming for internal standards or regulatory requirements, Security Hub gives you the tools to stay audit ready.

Why it Matters: Easier audits, less manual work, and fewer compliance gaps.

Better Threat Detection

By pulling together findings from AWS-native services and external security tools, Security Hub provides a broader view of potential threats.

It helps you spot suspicious activity early, like unusual traffic or unauthorised access attempts. It helps to respond faster using automated actions or manual triage.

Why it Matters: Enhanced visibility leads to faster detection and reduced risk exposure.

Getting Started with AWS Security Hub

Setting up Security Hub is simple, even if you’re not a security expert. It helps to enable Security Hub from the AWS Console or CLI. Select the security standards you want to monitor against and integrate with other AWS services.

It helps to review findings, prioritise based on severity, and set up automated response actions using AWS Lambda.

Why it Matters: The single AWS region tests your alerts and then expand to a multi-region setup.

Learn more about AWS with our AWS Certification - sign up now!

Common use Cases of Security Hub

AWS Security Hub is a powerful enabler for proactive security operations. Here are some of its most common and impactful use cases:

1) Security Scanning

Security Hub serves as a central scanner that continuously checks your AWS environment for misconfigurations, vulnerabilities, and threats. By integrating with tools like Amazon Inspector, GuardDuty, and third-party scanners, it provides a holistic view of your security posture.

For Example: You can scan for open security groups, unused ports, or outdated AMIs and get alerts before they become real risks.

2) Simple Classification and Prioritisation

With multiple alerts coming in from various tools, Security Hub helps classify, de-duplicate, and prioritise findings based on severity levels. This allows security teams to focus on what truly matters, avoiding alert fatigue.

For Example: Instead of reacting to every low-risk alert, teams can set rules to focus on critical vulnerabilities or compliance failures first.

3) Compliance

Security Hub helps maintain continuous compliance with popular standards such as CIS AWS Foundations Benchmark. Another example can be AWS Foundational Security Best Practices. It automates the compliance checking process and provides a real-time compliance score.

For Example: A company subject to industry regulations (e.g., finance or healthcare) can use Security Hub to automate control checks and generate reports to prove compliance.

4) Speed up Response Time with Automatic Ticket Routing

Security Hub integrates with Amazon EventBridge and AWS Lambda to create automated workflows that route findings to ticketing systems like Jira, ServiceNow, or even email/SMS alerts. This speeds up response times and ensures that every critical issue is assigned and addressed without delay.

For Example: When a high-severity vulnerability is detected, Security Hub can instantly create a Jira ticket and assign it to the right team.

Become an AWS-certified professional with our in-depth course on AWS Professional Solutions Architect Training– Join now!

Pricing Details of AWS Security Hub

AWS Security Hub offers a flexible and scalable pricing model designed to suit organisations of all sizes. The service begins with a 30-day free trial, allowing users to explore all its features, including security checks and findings aggregation. This pricing structure comes without any upfront cost.

After the trial, each AWS account benefits from a perpetual free tier, which includes 10,000 finding ingestion events per month at no charge. It is ideal for low-volume or early-stage workloads.

How is Security Hub Enabled?

To enable AWS Security Hub, you can follow the two steps given below.

Use the Multi-account Script to Activate Security Hub

This method involves running a provided AWS script that automates the process of enabling Security Hub across multiple AWS accounts. It streamlines the setup for an organisation by enrolling and configuring member accounts from a central account.

Use the AWS Management Console to Activate Security Hub

This simple method involves direct involvement and is easy to use. You just need to go to the AWS Management Dashboard, Security Hub Service, and follow the steps to be activated by filling out the required forms. Such a tactic is good enough for personal accounts or just at the beginning of a campaign when the goal is to gain the trust and support of the target audience.

Unlock your potential with our Developing on AWS - Associate Certification – Join today!

Conclusion

With AWS Security Hub, navigating the complexities of cloud security becomes much simpler. Instead of juggling alerts from different services, you get everything in one place, helping you spot potential risks faster and stay ahead of threats. Moreover, it’s your security command centre that can make cloud management smoother and more efficient.

Are you interested in mastering Elastic Compute Cloud with AWS? Then, register now with our AWS Associate Solutions Architect Training now!