> ciadotgov4sjwlzihbbgxnqg3xiyrg7so2r2o3lt5wz5ypk4sxyjstad.onion How does one store links like this? You'd need a bookmark file, which would sort of give the game away, I'd have thought. How do you make sure you notice when you visit a URL with the same readable prefix?
This is an unfortunate downside of onion URLs and a restriction imposed by Zooko's triangle (the CAP theorem of naming systems)[1]. One possible solution would be to issue a TLS certificates for both the clear-web and .onion domain (for services which are offering .onion services to provide better anonymity for users not their servers). Unfortunately, the CAB forum has decided to not allow this -- only EV certificate…
HN discussed (https://news.ycombinator.com/item?id=14038013) about the issue and the post (https://blog.torproject.org/cooking-onions-names-your-onions) outlines some of the ways in which you can mitigate right now.
Cloudflare is using the 'alt-svc' header (https://blog.cloudflare.com/cloudflare-onion-service/).. The CIA is not, I'd have loved it.
curl -I https://www.cia.gov/index.html HTTP/1.1 200 OK Accept-Ranges: bytes Content-Type: text/html ETag: "" Last-Modified: Tue, 28 May 2019 15:05:25 GMT Content-Length: ID: SESSION: Date: Thu, 30 May 2019 12:36 GMT Connection: keep-alive Set-Cookie: _session_=; path=/; domain=cia.gov; secure; HttpOnly ID: SESSION: