Do they have something like intranet with some local services, like in DPRK&Cuba? is this the case of completely losing connection and devices practically bricked for anything other than displaying the time?
All other platforms (instant messengers, social media, news) are massively unpopular for being horrid to use at best, and government spyware at worst.
To slow down the immediate damage the government has rolled back a few of the recent restrictions, hence why I can access HN. Among Google and a handful of other basic websites. But they are obviously experimenting and trying to figure out how much censorship they can get away with. There is talk of a planned "whitelisting" of the country's internet. Where almost all but a few big important services are blocked completely. This would have the bonus effect of making circumvention using VPNs and other methods even more difficult than it already is.
I wish you all the best. Stay safe my friend.
Can anyone recommend a good book, video course or other material to learn more about these topics?
Here's an overview. Be warned, the conclusion is:
> We enumerate the requirements that a censorship-resistant system must satisfy to successfully mimic another protocol and conclude that “unobservability by imitation” is a fundamentally flawed approach.
The way that I see it, its not just a technical problem anymore. It's about making the methods as diverse as possible and to some extent messing up the network for everyone. In other words, we should increase the cost and the collateral damage of widespread censorship. As an anecdotal data point, the network was quite tightly controlled / monitored around 2023 in Iran and nothing worked reliably. Eventually people (ab)used the network (for example the tls fragments method) to the extent that most of the useful and unrelated websites (e.g., anything behind cloudflare, most of the Hetzner IPv4 addresses, and more) stopped working or were blocked. This was an unacceptably high collateral damage for the censors (?), so they "eased" some of the restrictions. Vless and Trojan were the same at that time and didn't work or were blocked very quickly, but they started working ~reliably again until very recently.