Ransomware is the future.
bluesoul.me/2016/03/18/ransomware-is-the-future
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
This is going to get worse way before it gets better. You’ll see builds that try to invoke APIs for popular cloud storage providers to delete the versioning. They’ll find ways to avoid taking ownership of a file to quickly spot the vector of infection. While it’s almost impossible to be truly proactive to effectively block ransomware, there are things that can be done.