Why You Should Be Using A Kubernetes Security Platform

In the growing realm of cloud native technologies, Kubernetes is a powerful and popular tool for container orchestration. However, the complexity of Kubernetes can pose significant security challenges, which is why enterprise security platforms are so important.

To protect containerized applications, DevOps teams need robust security platforms that are tailored to Kubernetes’ unique demands. These platforms are designed not only to integrate security measures across cloud, cluster, container and code but also to automate policies and swiftly detect and respond to threats, ensuring a continuous shield of protection. Since threats change and Kubernetes is complex, a dedicated security platform can be a key tool in keeping your cloud native environment safe and compliant.

What is a Kubernetes security platform?

A Kubernetes security platform provides tools and software to protect your containerized applications. It makes sure they are safe from threats in the cloud and throughout the development pipeline. Kubernetes security involves integrating security measures across multiple layers, including the cloud, cluster, container and code, creating a comprehensive defense mechanism. By addressing security at each of these levels, a Kubernetes security platform helps to mitigate risks and ensure that your applications are secure from development to deployment.

The strongest platforms also include Kubernetes monitoring and observability to speed up remediation if attacks or issues do occur.

Even if you have a Kubernetes orchestration platform, the additional features from a security platform can be your key to compliance with industry standards and regulations. In addition, a well-crafted security platform can enhance your developers’ productivity by automating security workflows, freeing up your developers to innovate.

The threats to Kubernetes

From malicious attacks to misconfigurations, the threats to Kubernetes are as diverse as they are dangerous, and understanding them is the first step to securing your clusters. 

Misconfiguration: Kubernetes environments are complex, and even a small oversight can expose applications to data breaches and service disruptions. Misconfigurations can occur at various levels, from network policies to pod security settings, and they often provide attackers with easy entry points.

Unsecured container images: Containers are the building blocks of Kubernetes, and if the images used to create them are compromised, the entire cluster can be at risk. Malware can be introduced during the build process or through third-party images that have not been thoroughly vetted.

Unauthorized access: Weak Role-Based Access Control (RBAC) settings can open the door for attackers to seize control over cluster resources, potentially leading to data breaches, service interruptions and more.

Supply chain vulnerabilities: Attackers can target container build processes to inject malicious code. Malware, back doors, crypto mining and other vulnerabilities can be introduced in your development pipeline if the right admission controls and image scanning are not in place.

Network vulnerabilities: Network vulnerabilities can be exploited to move laterally within a cluster, amplifying the potential for harm. Properly configured network policies and segmented traffic are key to reducing these risks.

Why is Kubernetes security so complicated?

Kubernetes security is complex because Kubernetes is complex. Containers are ephemeral, and meant to be short-lived. Modern development involves managing thousands of containers that are constantly being created and deleted, with container images downloaded off the internet. The ability to orchestrate containerized applications across multiple nodes and clusters is the very strength of Kubernetes, but it also means that security must be considered at every level, from the infrastructure to the application itself.

We can divide the elements of Kubernetes security into four domains: cloud, cluster, container and code. It’s also important to integrate security at every phase of the Kubernetes lifecycle. Let’s look more closely at each of these security levels, and what is needed to keep Kubernetes running safely.

The four Cs

To truly secure Kubernetes, you must address the four Cs: Cloud, Cluster, Container and Code. 

Cloud: The cloud infrastructure, where Kubernetes is often deployed, is the first layer of security. This involves ensuring that the cloud environment itself is configured with robust security measures. This includes using secure network configurations, implementing identity and access management (IAM) policies and regularly monitoring for any unauthorized access or suspicious activities. Managed Kubernetes can take some of this work off of your team, so you can focus on development.

Cluster: This is where you’ll focus on managing access and using Kubernetes monitoring tools to ensure cluster security. You’ll implement role-based access control (RBAC), secure the Kubernetes API server and use network policies to manage pod-to-pod traffic. Regularly auditing cluster activities and implementing intrusion detection systems (IDS) can help you spot and respond to potential threats. And, of course, keeping your cluster up to date with the latest security patches is crucial for protecting against known vulnerabilities.

Container: For container security, the focus is on safeguarding the integrity of application packages. This means meticulously scanning container images for any vulnerabilities, ensuring that these images are constructed from secure sources, and that the base images used are themselves secure. By implementing security policies and using the right tools to monitor and enforce these policies, you can ensure that your containers remain secure throughout their lifecycle.

Code: Code security is the bedrock of a robust application. Ensuring your source code is free from vulnerabilities can involve implementing secure coding practices, regular code reviews, and using static and dynamic analysis tools. By securing your code, you can prevent many common security issues before they become a threat to your Kubernetes environment.

Kubernetes lifecycles

Another way to think about Kubernetes security is through the lens of the lifecycle of containerized applications. Each step, from development to runtime, presents distinct security challenges, requiring a well-coordinated strategy to reduce and mitigate risks. 

Develop: In the development phase, code scanning and vulnerability assessments play a crucial role. Developers must use tools to scan their code for security vulnerabilities and ensure that any third-party libraries are free from known issues. By catching and addressing these vulnerabilities early, the risk of deploying insecure code is significantly reduced.

Distribute: Once your code is polished, the next step is to distribute it. This is where container images are created and sent to a registry. Image scanning is key at this stage, helping to identify and prevent the use of compromised containers. Automated security platforms can streamline this process, ensuring that only verified and trusted images are deployed. By integrating these scans into your CI/CD pipeline, you can maintain a high level of security without slowing down development.

Deploy: Moving on to deployment, the focus shifts to ensuring that the Kubernetes cluster itself is secure. Proper configuration and access controls will minimize the attack surface and reduce misconfigurations. Regular audits and compliance checks can help ensure that the cluster remains secure over time.

Runtime: Runtime security is the next vital piece, focusing on the monitoring and safeguarding of containers in action. This encompasses continuous monitoring for unusual activities, detecting potential intrusions, and Kubernetes troubleshooting if needed. Tools for runtime security are designed to identify and respond to threats in real time, adding an extra layer of protection. 

By integrating security measures for these four stages, you’ll achieve a comprehensive security strategy, covering the entire Kubernetes lifecycle.

Are Kubernetes security platforms the solution?

In increasingly complex and dynamic cloud native environments, the need for comprehensive security measures is clear. Kubernetes security platforms simplify, streamline and standardize security for container lifecycles. Solutions like SUSE Security integrate threat protection across all layers of the stack, from the cloud infrastructure to the individual containers. This approach ensures that no part of the environment is left open to potential threats.

A key benefit of these platforms is their ability to deliver security across the entire Kubernetes lifecycle. This means that from the time you start building your application to the time it is deployed and running, you have a consistent and seamless security framework. 

Kubernetes security platforms like SUSE Security also automate compliance checks, reducing the need for manual oversight and the risk of human error. Compliance with industry standards and regulations is essential, and automation ensures these checks are consistently and accurately performed. This not only saves time and resources but also strengthens the organization’s security posture.

Kubernetes observability and anomaly detection are also standout features of these platforms. By keeping a constant watch over your environment, these tools can quickly spot and stop potential threats before they escalate. This proactive approach is key to preventing data breaches and other security incidents. 

And let’s not forget the scalability of Kubernetes security platforms. As your organization grows and your infrastructure evolves, SUSE Security can keep pace, ensuring your security measures remain effective and comprehensive. This adaptability is key to maintaining a high level of protection in the face of change and new challenges.

Kubernetes security platforms: Final thoughts

After this detailed look at Kubernetes security, it is clear that security platforms are powerful, but they are just one part of the bigger security puzzle. 

As new vulnerabilities and attack vectors are discovered, your organization must maintain an adaptive and responsive security posture. The speed of development and deployment in Kubernetes environments demands that your security strategy keeps pace. Kubernetes security platforms are key tools to achieve that strong, resilient strategy.

Kubernetes security platforms are designed to work well together across cloud, cluster, container and code, protecting against the many threats that may come up during the Kubernetes lifecycle.

A carefully-selected Kubernetes security platform strengthens your organization’s security stance, allowing you to direct your focus on innovation and expansion with confidence.

Level up your container security knowledge with our Ultimate Guide to Kubernetes Security.

Kubernetes security platforms FAQs

Can you mix multiple Kubernetes security tools together? 

You can use multiple Kubernetes security tools, but it’s crucial to weigh the potential complexities and overhead. While using multiple tools can enhance your security stance, it can also lead to integration challenges and increased maintenance. A well-integrated Kubernetes security platform often offers a more streamlined and cohesive approach, reducing the risk of security gaps and operational inefficiencies. If you do decide to mix multiple tools, ensure they are compatible and can work seamlessly together to avoid any unforeseen issues.

How much does a Kubernetes security platform cost?

The price tag for a Kubernetes security platform can vary significantly, depending on the provider, the features you require and the scale of your operations. Some platforms offer free basic tiers for small deployments, while others may require a subscription or a pay-as-you-go model. Carefully assess your specific needs and budget before reaching a decision. Consider the level of support, the scope of security features and the ease of integration with your current setup.

How can you manage success with a Kubernetes security platform?

Managing success with a Kubernetes security platform requires a strategic approach, continuous vigilance and periodic evaluation. Start by setting clear security objectives that are in line with your business goals. Implement a thorough onboarding process to ensure that your team is equipped to use the platform effectively. Regularly review and update your security policies to address new threats. Take advantage of the platform’s reporting and analytics tools to gain insights into your security posture and identify areas for improvement. By fostering a culture of security and continuous improvement, you can maximize the value of your Kubernetes security platform and ensure that your Kubernetes environment remains secure and compliant.