PaaS Clouds offer application developers an environment to build, deploy, and manage applications without infrastructure complexity. These platforms streamline development with integrated tools and services.PaaS Clouds empower developers by providing a suite of development tools, middleware, and cloud-based resources. They facilitate seamless deployment of applications, enhancing scalability and reducing the time-to-market. Users appreciate the ability to focus on application logic while the...
You have many attack vectors.
Firstly, there are the attack vectors that are part of your application and environment but these will be the same independent of where you are.
Beyond that you have the following ones:
1) Anybody with access to the PaaS infrastructure either internal or external.
2) Accidental mistagging of data (think of accidentally setting an S3 bucket as public).
3) The provider monetizing your data (take a look at the troubles currently surrounding Oracle)
4) large cloud providers are subject to constant attacks because they are well-known addresses.
Private systems are still subject to attacks but not on the same level of intensity or as often by serious hackers.
The best solution for PaaS protection is always native tools... from the CSP.