14 best Kubernetes Security Tools

14 best Kubernetes Security Tools

In the digital realm, app security is a major concern. Many use modern security tools to manage and run applications smoothly and deal with digital threats. One such tool is Kubernetes security tools.

Kubernetes is an orchestration platform that has become quite popular among people related to the digital world, especially software, because it keeps the apps safe and protected and automates their deployment. Many organizations use Kubernetes security tools to secure their Kubernetes environment.

Kubernetes is a critical part of the app’s lifecycle; if it’s secure and works well, your app’s development and operations go smoothly. Let’s discover Kubernetes security tools with us to provide robust security measures to your Kubernetes system.

Kubernetes Security Tools

Kubernetes security tools, a.k.a K8 security tools, are being widely used to protect and streamline the development and running operations of software in the digital world. It is an automated system with continuous integration and continuous delivery (CI/CD) pipeline that detects threats, resolves security concerns and safeguards the confidentiality of the applications.

Kubernetes Security Tools Open Source

Kubernetes security tools open source detects vulnerabilities and errors in the security system of Kubernetes clusters. These tools are used to manage and automate containerized applications. Read ahead to learn about these tools in detail.

1. Clair

Clair is an open-source tool that is widely used to scan the vulnerabilities in the container’s security system. It is combined with Kubernetes for continuous monitoring and scanning of container images. Continuous imaging helps the experts analyze the detected vulnerabilities from the report provided by Clair.

2. NeuVector

NeuVector is another security tool that is compatible with Kubernetes. It provides full lifecycle container security and the associated networks to protect the container from digital security breaches and illegal incidents. Thanks to its layer seven firewalls that keep the containerized environments secure.

It also provides plugin options to integrate with cloud containers, e.g., AWS, Azure, Google Cloud, IBM, and Alibaba Cloud. NeuVector can be easily deployed to any host to allow authorized access, control access, manage CI/CD vulnerability, continuously monitor security, detect OWASP WAF attacks, end-to-end and host security, etc.

3. Checkov

Checkov is a Kubernetes security tool that analyzes the infrastructure of the Kubernetes cluster through scanning. It is a statistic analyzer and can run hundreds of scans against a single cluster to confirm if its resources are provided securely.

It works as a code template and can be integrated with CI/CD pipelines to avoid the deployment of insecure and vulnerable setups. Even more, it can be used on a cluster that is in running operation, making it a valuable tool to detect and scan threats against any Kubernetes cluster.

4. Kubeaudit

Kubeaudit is another Kubernetes open-source tool that is used for security audits and evaluation. It is considered the best of all security tools because it can detect uncommon vulnerabilities, too. Kubeaudits works great in identifying exposed secrets and insecure network policies in the system.

It can also be used to detect and fix errors in cluster contexts. Most commonly, it is used as an integrated tool with a CI/CD pipeline to ensure secure deployment.

5. KubeLinter

If you use Kubernetes to manage containerized services, you need a Kubelinter. This statistical tool identifies the warnings and security issues in Kubernetes YAML files and Helm charts. It is used to check the issues in the early stages of application development.

6. Audit2rbac

Audit2rbac is another tool that is used to detect the functioning of your open-source containers. It generates role-based access control (RBAC) policies using Kubernetes audit logos. To activate this security tool, you will need to enable the Kubernetes cluster’s auditing.

Once it is activated, it will generate an RBAC role that covers all the API requests made by a specific user. You need to input your Kubernetes audit log and username to restrict access to your system and only enable access for authorized users.

It not only reduces potential risks but also reduces manual workload to automate system access rights. Any software integrated with RBAC smooths and enhances operational efficiency, and many companies use this to reduce paperwork and password sharing when they hire new employees.

7. Kube-bench

Kube-bench is another Kubernetes security tool that verifies whether the Kubernetes are deployed securely or not. Secure configuration of Kubernetes is important for the smooth operation of the system. This tool generates a detailed report of all the security checks that have already been performed based on the list from the Center for Internet Security Documentation.

Kube-bench is used to verify the installation processes of Kubernetes. It also checks the system regularly to maintain the secured configuration of Kubernetes.

8. Twistlock

Kubernetes is naturally neither secure nor insecure. This is why you need Kubernetes security tools to keep it safe from online security breaches. Twistlock is another valuable tool used to monitor the working and function of containerized clusters.

It provides full-fledged security to the containers from the pipeline to the perimeter with its full monitoring features. Twistlock can secure entire cloud-native security stacks and manage nodes, plugins, cloud secret files, and Kubernetes configuration.

Moreover, it can continuously monitor up to 200 built-in CIS benchmarks. All the apps in your Kubernetes can be monitored 24/7 for vulnerabilities and compliance. Keep in mind that it is not an open-source tool, and you need to buy it to utilize it, although you can run a few trials for free.

9. Illuminatio

Illuminatio is one of the top Kubernetes security tools because it detects the validations in network policy. If you are wondering what network policy validation is, read ahead. It is a tool designed to monitor and ensure the proper functioning of your cluster’s firewall, and this is known as network policy validation.

People use illuminatio to scan their Kubernetes cluster’s network policies, build test cases, and implement the designed test cases for each policy to determine its effectiveness and working. You will need a Python 3 or higher and a Pip 3 to install this Kubernetes security tool.

10. Kube-hunter

Aqua Security designed a kube-hunter, and it is one of the most useful tools for detecting security vulnerabilities in Kubernetes clusters. With this security testing tool, you can detect security weaknesses and take action in time to prevent and mitigate cyber-attacks. It is a penetration test that pinpoints the vulnerabilities, helping owners fix and secure their Kubernetes cluster before a hacker exploits them.

It is usually paired with a Kube-bench for operation. Kube-hunter comes with 23 passive tests and 13 active tests.

You can choose whatever test you like to run on IP addresses, domain names, and networks of your choice. Kube-hunter will identify the weaknesses in any program using port scanners and penetration tests.

11. RBAC-lookup

It is a tool that works on managing Kubernetes Role-based Access Control (RBAC) configurations. RBAC-lookup will control the accessibility to your system and cluster. It is used to find users, service accounts, etc., bound to specific RoleBindings, ClusterRoleBindings, Roles, and ClusterRoles.

General Purpose Tools of Kubernetes Security Testing Tools

Besides professional and effective open-source tools for your Kubernetes clusters and containers, some developers also use general-purpose tools to detect and handle the vulnerabilities in your Kubernetes to protect your system from cyber attacks. Here are some general-purpose tools that are used to secure Kubernetes.

1. Open Policy Agent (OPA)

It is a policy engine that is used to define and enforce policies in your Kubernetes. OPA is used to define policies based on resources, roles, etc. It is designed for a native cloud environment and generates a policy for the product and service the user uses.

2. Istio

Istio is also used to secure Kubernetes clusters. When integrated with Kubernetes, it facilitates traffic management, provides a secure environment, and monitors vulnerabilities. It is a modern service networking layer that provides a flexible way to automate the network functioning of applications.

Most commonly, it is used for minor services that are somehow linked to the cloud’s native applications. Using this tool, you can set multiple RBAC policies, execute mutual TLS authentication, and prevent DDoS cyber-attacks that make the resources unavailable for some time.

3. Commercial K8s Security Tools

It is an advanced security tool that goes beyond the default settings of Kubernetes. They provide ample security testing tools, compliance support systems, threat intelligence, and insights to fix and prevent cyber attacks. It capacitates companies and organizations to identify and respond to cyber security risks in time and keep the data safe.

Other security tools that have similar functionality and performance are Prisma Cloud and AquaSec. They manage the operating systems, detect vulnerabilities, report compliances, and prevent malicious cyber attacks.


How does Kubernetes provide security?

Kubernetes provides security by limiting access and isolating the networks. This helps in detecting and preventing potential security breaches.

Moreover, through network encryption, you can keep the data secure while transferring it. It can be achieved using Virtual Private Networks (VPN), Secure Socket Layer (SSL), etc.

What are the 4 C’s of Kubernetes security?

The 4 Cs of Kubernetes security are cloud, clusters, containers, and code.

What is the Kubernetes tool used for?

It is an open-source platform that is used to automate, deploy, enforce, and manage containerized applications. It comes with various useful features like automatic scaling, self-healing, and rolling updates that make it a secure platform if used with Kubernetes security tools.


Kubernetes is an amazing platform that offers plenty of benefits, but due to its lack of security, it is quite vulnerable to security breaches and malicious attacks. That’s why you should integrate it with Kubernetes security tools to prevent cyber attacks and keep your cluster protected. There are plenty of Kubernetes security tools available, and we have discussed most of them in our article.

Choose the one that aligns with your security needs. Make sure the tool you are using is able to track all codes and generate reports to detect the vulnerabilities in the system.


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