Stupid trivia: In 1993 I designed and built the datacenter for what is now Change Healthcare.
A bit more on Change Healthcare - The threat operator (AlphV) was paid in 350 BitCoin ($22m) two days after the attack using Ransomware as a Service (BlackCat), same RaaS used to bring down the Colonial Pipeline operations.
What's interesting is that there were several operators involved in compromising OPTUM, the data clearing house providing services to Change Healthcare and others. These "partnerships" aren't that unusual. What's notable is that AlphV (the original TO and recipient of the $22m) has shut everything down without paying the partners their 'rightful' share. It's happened this way in the past and sometimes people wind up dead. There's no loyalty amongst thieves.