Container-Native Security: The Pros and Cons of the Sidecar Pattern in Microservices

Modern cloud-native systems are obsessed with decomposition. Applications are split into microservices. Infrastructure becomes declarative. Networks become programmable. Security follows the same trajectory: instead of embedding protection logic directly into application code, teams increasingly externalize it into independent runtime components. One of the most influential patterns enabling this shift is the Sidecar pattern. In Kubernetes environments, sidecars are now everywhere: Service mesh