NordVPN have implemented measures to protect you and negate such leaks. Onion Over VPN: For extra protection, or those desiring to visit the dark web (TOR network),NordVPN offers you the ability to route your traffic first through their VPN and then send it to the Onion Router.
As of February 2018, NordVPN runs over 3,300 remote servers in 60 countries, with the largest numbers of servers located in United States, United Kingdom, Canada, Netherlands, Germany, Australia, France and Sweden. Besides general-use VPN servers, the provider offers servers for specific purposes, including P2P sharing, double encryption, connection to the TOR anonymity network, and protection against DDoS attacks.
In 2017, NordVPN launched a number of obfuscated servers designed for using VPN under heavy Internet restrictions. These servers allow accessing the service in countries such as the United Arab Emirates, Saudi Arabia, and China. Although the Chinese government has been attempting to restrict encrypted communications for years, millions of people still rely on the technology to bypass China’s censorship system, known as the Great Firewall.