Useful to whom? I'm sure the oil execs find their work useful.
wildbus8979
You keep thinking whatever you want, I'm sure that boot tastes great!
I'm sure all the people who had all their families get a visit at their house from CSIS agents because they ran protests against the Vancouver Olympics and all the first Nation folks who fought against pipelines on their land have a stronger sense of what the reality actual is.
You're getting downvoted by blind patriotism, but you aren't wrong.
conducting covert action within Canada and abroad.[3] CSIS reports to the Minister of Public Safety and Emergency Preparedness
CSIS is primarily domestic. It's its raison d'être. It was created after the McDonald Commission into the crimes and illicit actions committed by the RCMP against the independent movement in Quebec. CSE is more foreign oriented.
Absolutely. Simply use ACME with the DNS validation method. Using bind you'll want to create keys and allow TXT access for those keys to the validation domains. Fear not, this isn't exclusive to bind, ACME tools supports dozens of other backends. That's all you need the actual domain doesn't need to be resolvable with an A/CNAME record. Internally you can run an entirely different DNS server to resolve your hosts, use hosts files, or use bind zones.
Except it isn't. Saying it is trivial is just gross generalization. It's trivial to configure bind to have internal zones that aren't resolvable publically. It all depends on configuration, such as reverse ns entries, zone accessibility, etc.
You can have (sub)domains that are listed in the certificate lists and yet aren't resolvable externally as well.
It'd be better and more accurate say the list of certificates then.
Sub domains aren't public unless your DNS server has XFER on.
Worth noting about this approach is that the global list of subdomains is publicly searchable.
Can you expand on this? What is it that you call the "global list of subdomains"?
Use yt-dlp to download the file and play is in MPV/VLC/Celluloid.

https://www.thestar.com/vancouver/documents-to-be-released-years-after-allegations-that-canada-s-spy-agency-monitored-pipeline-protesters/article_081ff05b-2c67-5475-8379-5c4bfc9d8735.html
https://www.theglobeandmail.com/business/article-csis-says-ottawas-trans-mountain-pipeline-purchase-seen-as-betrayal/
https://www.cbc.ca/news/indigenous/wetsuweten-caledonia-csis-documents-1.6635343
I don't know which rock you live under, but this has been going on for decades.