Colonial Pipeline Paid Hackers Nearly $5 Million in Ransom
https://www.bloomberg.com/news/articles/2021-05-13/colonial-pipeline-paid-hackers-nearly-5-million-in-ransom
A History of Ransomware Attacks
https://digitalguardian.com/blog/history-ransomware-attacks-biggest-and-worst-ransomware-attacks-all-time