Researchers at Google, Chainalysis, The University of San Diego and New York University’s Tandon School of Engineering have recently revealed the monetary cost of ransomware attacks. The study identifies a strain named “Locky” as the most financially devastating, but also references more common strains such as Petya and WannaCry.

http://www.news.com.au/technology/online/security/ransomware-victims-pay-out-almost-32-million-over-the-last-two-years-a-study-has-found/news-story/0bc5bf1a6c7f93c975b8447acc4f83c1