It's like the Swiss Cheese model where every system has "holes" or vulnerabilities, several layers, and a major incident only occurs when a hole aligns through all the layers.
I certainly don't get that cert. I'm seeing a LetsEncrypt cert for idtech.space with various SANs.
# host code.idtech.space
code.idtech.space is an alias for idtech.space.
idtech.space has address 192.99.32.215
idtech.space has IPv6 address 2607:5300:60:47d7::
https://leehite.org/Chimes.htm is the best source of information I've found on chime design and length. They go into great length about the lower octaves and how you can hear them (or not).
I recently created https://immich.pro to partially address this problem. I've got spare compute and storage that I'd like to turn into MRR. While the privacy angle isn't _fantastic_ maybe some people won't care. Could be better than trusting Google/Apple.
TL;DR it's closed source and there's open source alternatives.