LXer: Linux Containers vs. VMs: A Security Comparison
 

Published at LXer:

More vulnerable than virtual machines? In fact, containers have some security advantages. Developers love containers. They're easy to use and fast to start. You can run a lot of them on even simple hardware. Startup overhead has always been a bane of development and testing, and this overhead only increases with microservices architectures.

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.. The biggest problem i have with Docker containers is that the repository is mostly a free for all. You have no guarantee that you are installing an image without botnet software snuck in. I allow docker only on segregated vlans, and only on machines that are cleared out daily and powered off at night.