[redis_mlc]

Largely true, but there are HHS rules and guidelines that are accepted in the US healthcare space:

https://www.hhs.gov/hipaa/for-professionals/privacy/special-...

[kube-system]

HIPAA data is not immune to a data leak... not even the organization that wrote those guidelines are immune:

https://www.deccanchronicle.com/technology/in-other-news/201...

There's tons of PHI on the internet. Your local hospital's online medical chart, your insurance companies bill-pay, etc...