B-409, Raj Corner, Opp. Vasupujya Residency,New Pal Road,

Surat, Gujarat

E: [email protected]

P: +91 7984 995 759


1st Floor, DL 124, DL Block, Sector II, Saltlake,

Kolkata, West Bengal 700091

E: [email protected]

P: +91 33 4008 5677

Docker and Container Security

Docker and Container Security

  • CyberSmithSECURE helps in Securing a Docker container which is no different than the security of other containers.
  • It requires an all-inclusive approach, securing everywhere from the host to the network and everything in between.
  • Because of their moving parts, ensuring the security of containers is difficult for many organisations, and it requires more than a rudimentary level of vigilance.

Why Docker and Containers Security is Important?

  • Docker containers are not to be run as root:

When building an application, it is best practices to adhere to the principle of least privilege. This means limiting the application’s access to only the resources required to function. This is one of the top ways to protect your containers from unexpected access. When it comes to the security of your Docker containers, this is very crucial and why Docker default settings are not set to run containers as root. For example, if your containerised application is vulnerable to an exploit, and you are running with the root user, it expands the attack surface and creates a simple path for attackers to gain privilege escalation.

  • Ensure the security of your Docker container registries:-

Container registries, in particular those in Docker containers, are what make containers such a strong platform. With registries, you can create a central repository of images that are easily and quickly downloadable. Nevertheless, in all their glory, they do come with a lot of security risks if you do not utilise a trusted registry that you’ve conducted thorough research on, such as Docker Trusted Registry. With the Docker registry, you install it behind the firewall already implemented in your IT infrastructure to alleviate the risks internet poses, but even then, you should still deny users to upload or download from the registry.

  • Use a trusted source:-

Now that you have the container registry secured, you don’t want to infect it with container images obtained from an untrusted source. It may seem convenient to simply download container images readily available to the public at the click of the mouse; however, it is extremely important to ensure the source of the download is trusted or verified.

  • Wrapping it up:-

Securing your Docker containers is no picnic, but the payoff is well worth the work. It takes a holistic approach, hardening the container environment at every level. And while the above best practices seem like a lot, they will save you an immense amount of time in the future and alleviate you from major security risks.