Method and apparatus for virtualized environment where virtual computing instances interface a service platform operated on a physical computing apparatus are disclosed. A new virtual computing instance interfacing the service platform can be created, the created new virtual computing instance belonging to a class of virtual computing instances. At least one security credential is obtained from a storage of security credentials associated with the class of the new virtual computing instance. Data communicated with at least one further computing instance is secured based on the obtained at least one security credential.