No, all Cloud providers rather follow some form of the “shared responsibility model”. This means that depending on the category of the service, the Cloud providers take care of some part of the security. However, in general “if you can touch it, you own it” – or to say it differently: if you can change the settings for a resource or decide what you want to run, in general the security is your responsibility. It is important to remember: even if it’s a fully managed service, customers are responsible for their uploaded data and the access permissions.