Cybercrime ransomware attacks are evolving rapidly and getting more sophisticated every month.
These attacks are being run by Eastern Europe organized cybercrime. They hire experienced, very smart coders and run malware campaigns supported by a $3 billion underground criminal economy.
If your systems are infected by ransomware, you may be forced to pay ransom in Bitcoin. Giving the criminals more money for future attacks, so it is better to prevent this and make sure you don't become a victim in the first place.
This white paper provides a history of ransomware and what you can do to prevent being attacked.