The U.S. federal government, thru @USCERT_gov, issued a special alert advising that it has “observed an increase in ransomware attacks across the world”: https://bit.ly/2qlcup4 . According to @USCERT_gov, the “best practices and guidance remain the same” for preventing ransomware:
1. Create system back-ups
2. Be wary of opening emails and attachments from unknown or unverified senders
3. Ensure that systems are updated with the latest patches
And @USCERT_gov encourages users and administrators to review its its Ransomware page and the the U.S. Government Interagency Joint Guidance for further information.