DNS man-in-the-middle attacks can occur when a government or 3rd party redirects you to a different online destination than you were trying to reach. For example, when you try to reach www.facebook.com governments in China, Iran and Turkey could intercept your DNS request and redirect you to an error page. Using VyprVPN with VyprDNS, your data and DNS requests pass through an encrypted tunnel that defeats "man-in-the-middle" DNS attacks and prevents DNS filtering so you can experience an open internet.
VyprDNS is enabled by default. You can find more information about VyprDNS here.
If you need any further assistance, please contact our 24/7 Customer Success Team, who would be glad to assist.