The ransomware attack on Carnival Cruise lines may have been preventable with timely patching.

From Bleeping Computer
Cruise line operator Carnival Corporation has disclosed that one of their brands suffered a ransomware attack over the past weekend.
Carnival Corporation is the largest cruise operator in the world with over 150,000 employees and 13 million guests annually. The cruise line operates under the brands Carnival Cruise Line, Costa, P&O Australia, P&O Cruises, Princess Cruises, Holland American Line, AIDA, Cunard, and their ultra-luxury cruise line Seabourn.