No. The TG app will encrypt all internet activity on that machine, between you and the proxy. And they use stealth proxies, which means that by the time the data hits the internet, not only is all the identifying info removed but the traffic looks like generic traffic. The intention being that your ISP doesn't even know it's a VPN. They claim they have no DNS leakage. You can still use SSL, if you wish. I chose to use a VPN instead of a domain with SSL, because it's just easier. They have layers of their own security.
Edited by bifflowman, 17 January 2019 - 04:35 AM.