But the cloud is safe and secure...
As someone who is a bit of an expert in 'Big Data' and working with clients on their Cloud Strategy, I always hear how Hadoop is dead and everyone is moving to the cloud. How the cloud is secure.
The truth is yes... AWS who has been around the longest does have a list of security pluses. If you know what you're doing you can put stuff on AWS and it will be secure.
However : This isn't the norm. Meaning that most who jump to the cloud, get their AWS certification can still mung up the works by failing to properly secure their environment. All it takes is one developer or someone not thinking to open up the door ... When you go on Prem, you have a team of people responsible and the developers usually don't have the level of access to open the door to a breech. (YMMV and this is outside of phishing attacks.)
This is yet one more on the list of breaches that could have been avoided.