Yet another new Ransomware with a new sophisticated approach http://blog.trendmicro.com/trendlabs-security-intelligence/crypvault-new-crypto-ransomware-encrypts-and-quarantines-files/
I know a startup company, called Morphisec which is eliminating those exploits in a very surprising and efficient way.
In general vulnerabilities are considered to be a chronic disease and this does not have to be this way. Some smart guys and girls are working on a cure:)
Remember, it all starts with the exploit.