Keeping Container Applications Secure in the Cloud

The world of cloud computing has revolutionized the way organizations build, deploy, and run their applications. At the heart of this revolution are containers, which offer numerous benefits like scalability, portability, and faster deployments. It’s estimated that close to 70% of businesses will be using container technology by the end of this year. 

However, as more businesses move their container applications to the cloud, security has become a top concern. After all, no system is infallible, and any security breach can have devastating consequences. That’s why it’s essential to be aware of the potential risks when using containers in the cloud. 

In this article, we’ll explore container security in the cloud, highlight the risks involved and provide practical advice on how to keep your container applications safe and secure.

Evaluating Container Security Risks

Containers are rapidly becoming the go-to choice for businesses looking to deploy applications in the cloud. However, as container technology gains popularity, it has become a primary target for attackers. 

Some common container security risks in the cloud include network security threats, data privacy issues, container malware, insecure APIs and container runtime vulnerabilities. According to a report by Sysdig, 85% of container images have some form of vulnerability. By understanding these risks, businesses can better protect their containerized applications in the cloud.

One way to identify container security risks is to use security frameworks. These frameworks provide guidelines and best practices for securing containerized applications in the cloud. They can help businesses identify potential risks and implement the necessary security measures to prevent attacks. Some popular cloud container security frameworks include CIS Docker Community Edition Benchmark, NIST SP 800-190, and OWASP Docker Top 10.

In addition to using security frameworks, scanning tools and audit logs can also help businesses detect vulnerabilities in their containerized applications. Scanning tools can identify and highlight security flaws, while audit logs can provide valuable insights into the activities within the container environment. By analyzing the audit logs, businesses can identify potential security breaches and take action to mitigate them. 

In combination, using security frameworks, scanning tools, and audit logs can provide a comprehensive approach to container security in the cloud, helping businesses stay ahead of potential threats.

While container applications are a powerful tool for deploying software in the cloud, it’s important to keep in mind that they are not the only use case for secure cloud-based systems. Many industries that deal with sensitive data daily can use secure cloud-based systems in this way. 

Medical clinics often utilize direct patient communication medical software to ensure sensitive patient information is kept confidential, for instance. By leveraging the power of secure cloud-based systems, these industries can protect their data from malicious actors and ensure the privacy of their customers or patients.

Preventive Security Measures

Mitigating container security risks in the cloud requires a proactive approach. Below, let’s look at some preventive measures that can help businesses prevent potential attacks and protect their containerized applications.

  • Virtual private clouds (VPCs): VPCs create a private network within the cloud environment, enabling businesses to isolate their containerized applications from other network traffic. This helps to prevent unauthorized access that could pose security risks.
  • Container firewalls: Like VPCs, container firewalls monitor and control inbound and outbound traffic to and from containers, thus preventing unauthorized access and potential attacks. However, container firewalls work at the container level, while VPC can protect several containers. 
  • Virtual private networks (VPNs): VPNs mitigate container security risks by securing data transfer. They encrypt all data transmitted between the user’s device and the cloud environment, ensuring that it’s secure and cannot be intercepted. This helps prevent attackers from accessing sensitive data and reduces the risk of data breaches.
  • API schema ingestion: This involves using tools that scan the API schema for vulnerabilities and identify potential security flaws. By detecting these vulnerabilities early, businesses can take the necessary steps to address them before they become a significant security risk.
  • Adaptive threat detection: This technology uses machine learning algorithms to analyze user behavior patterns and identify potential threats. It can detect and respond to threats in real-time, enabling businesses to prevent attacks before they cause any significant damage. Adaptive threat detection can also help businesses identify and proactively mitigate emerging threats before they become a significant security risk.

Responding to Threats

Despite the best preventive measures, cloud container applications can still be vulnerable to various security threats. That’s why it’s important to continuously monitor container applications for potential threats. Businesses should establish security monitoring practices that enable them to detect security incidents as soon as possible and take appropriate measures to respond to them.

The first step in responding to a security incident is identifying the root cause of the incident. This is crucial because it helps to prevent similar incidents from occurring in the future. Once the root cause has been identified, the affected container application should be isolated to prevent the attack from spreading.

Implementing remediation measures is another essential step in responding to security incidents. This involves addressing the vulnerabilities that were exploited in the attack and implementing security controls to prevent similar attacks from occurring in the future. It’s also important to notify relevant stakeholders, such as customers and partners, about the incident and provide regular updates as the situation develops.

Maintaining continuous security in containerized applications requires a multi-layered approach. This includes implementing strong access control policies, regularly updating container images to patch vulnerabilities, and regularly scanning container images for potential security flaws. Training employees on security best practices and establishing a culture of security within the organization is also important.

In addition to these measures, businesses should consider implementing security automation tools to maintain continuous security. These tools can help automate security tasks, such as vulnerability scanning and patching, and provide real-time security alerts. They can also help to reduce the risk of human error, which can often be a significant cause of security incidents. No-code workflow software is an example of such a tool that can make it easier to automate key tasks and improve overall security.


While container applications in the cloud offer many benefits, they are not immune to security risks. Securing container applications in the cloud is crucial if businesses are to take full advantage of this innovative technology. 

While there are inherent security measures in place, no system is perfect, and potential risks must be evaluated and dealt with early on. By implementing a multi-layered approach to security, including using security frameworks, scanning tools, and adaptive threat detection, businesses can proactively mitigate risks and protect their containerized applications.

But security doesn’t stop there – businesses must also have a clear plan for responding to security incidents and maintaining continuous security. This means implementing preventive measures, such as securing virtual private clouds, using virtual private networks for data transfer, and implementing API schema ingestion to prevent attacks.

By following these best practices and building a culture of security within the organization, businesses can ensure that their containerized applications remain secure in the cloud. So, go ahead and embrace the benefits of container applications – just make sure you’ve got your security game on point.

Nahla Davies

Nahla Davies is a technical copywriter and former software specialist and lead programmer at several major technology companies whose clients include Collibra, UpGuard and Netflix. Since 2015 Davies has worked with enterprise clients around the world developing RegTech protocols and best practices. She worked both enterprise side and with sovereign governments acting as a key contributor for notable public projects like DCOM. Since 2020 Davies has taken a less active role in compliance consulting and started sharing my insights as a technical copywriter. Visit to learn more.

Nahla Davies has 14 posts and counting. See all posts by Nahla Davies