https://arstechnica.com/information-technology/2019/10/fbi-warns-of-major-ransomware-attacks-as-criminals-go-big-game-hunting/

The FBI has issued a public service announcement entitled "High Impact Ransomware Attacks Threaten US Businesses and Organizations." While the announcement doesn't provide any details of specific attacks, the Bureau warns in the announcement:

Ransomware attacks are becoming more targeted, sophisticated, and costly, even as the overall frequency of attacks remains consistent. Since early 2018, the incidence of broad, indiscriminant ransomware campaigns has sharply declined, but the losses from ransomware attacks have increased significantly, according to complaints received by IC3 [the Internet Crime Complaint Center] and FBI case information.