So lately its all over the news that China and Russia are soon going to be rolling out a concrete policy that effectively bans the use of VPN's, not only for their respective citizens but also for foreigners visiting the countries. The U.K. and Australia are also mulling over similar legislation that seeks to curtail or discourage or inhibit the ubiquitous use of VPN's within their borders. The U.A.E and Saudi Arabia and other countries in the middle east also have declared VPN use as illegal. My question is, does the NSA know something that China and Russia have yet to figure out in terms of some breakthrough in fully uncloaking all VPN users based on traffic analysis or traffic correlation? We have all read the threads which speak about the NSA being able to break "trillions of VPN connections". Source: https://arstechnica.com/information-technology/2015/10/how-the-nsa-can-break-trillions-of-encrypted-web-and-vpn-connections/
So is the traffic analysis and real IP unmasking done by Russia and China ineffective compared to the United States NSA? Or, is the sheer popularity of VPN solutions being adopted by concerned netizens all over the world generating exponentially so much highly encrypted volume of traffic, that the 3-letter agencies in Russia or China are simply unable to keep up with deciphering it all? Which also makes me curious about the NSA just from a technical standpoint. We have come a long way since the Snowden revelations in 2013. A LOT more people are aware of the dangers of using insecure tunneling protocols like PPTP, and more and more VPN desktop clients are pushing the OpenVPN protocols, with users able to choose SHA256 as their payload encryption with RSA 4096bit handshake and also SHA256 authentication (to protect against collision attacks) with the simple click of a button.
Is the NSA STILL able to really break trillions of encrypted connections with the deployment of TLS1.2 everywhere and VPN's all pushing strong AES encrypted OpenVPN connections today as effectively they did in 2013? Or, is the "going dark problem" a real thing?