Containers don’t contain: Why isolation starts below the OS

Containers don’t contain: Why isolation starts below the OS

We all agree that the rise of containers reshaped modern infrastructure. Technologies like Kubernetes and Docker brought unmatched agility and portability, allowing teams to ship software faster than ever. But as someone who has spent over a decade in low-level systems, I can tell you this: containers do not contain. Not in the way that matters for modern security or operational reliability. If we want real isolation in multitenant environments—…