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If I use a custom DNS like NextDNS instead of my VPN service's DNS (NordVPN), where DNS queries go through the tunnel, will there be a privacy risk or some major disadvantages?

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  • Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking.
    – Community Bot
    Oct 3, 2021 at 18:04
  • If you are using a VPN for "privacy" reasons, then it would make sense to tunnel all the traffic including DNS queries through that VPN. Why not do that ?
    – Kate
    Oct 3, 2021 at 19:21
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    Commercial VPNs do not protect your privacy. Commercial VPNs take your private internet traffic and move the privacy impact from your ISP to the commercial entity that operates the VPN. The overall level of access to your private traffic is identical, you're just moving the traffic away from an (often well-regulated) ISP to an unregulated business.
    – Polynomial
    Oct 3, 2021 at 22:25
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    @Wan Are you sure they do not sell user data? How would you know? Do you have public reports of trustworthy third party auditing companies that detail the inner configuration of their services? Did you audit this VPN provider yourself? Do you trust the provider not to employ rogue employees that would sell user data on the black market or to work for intelligence agencies? How does the provider prevents such things to happen? How did you verify that those mechanisms are indeed in place and effective? On the other hand, do you have proof that your ISP sells user data?
    – A. Hersean
    Oct 4, 2021 at 12:34
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    Most of the time, VPN services advertised on youtube are snake oil or just overpriced proxies changing your IP to bypass geographical restrictions.
    – A. Hersean
    Oct 4, 2021 at 12:36

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Any perceived benefit you achieve by using a VPN shouldn't be affected by what DNS server you choose, except some may do more privacy-harming things with your data than others. Maybe there will be more latency. Unless you have specific concerns not mentioned in the question, the only true exception to your privacy would be if you somehow chose a DNS server that is locally routable, in which case that traffic would not go through the VPN and you'd have a "DNS leak".

That said, as discussed in the comments, you are simply trusting your data with another company that could be more or less shady than your ISP.

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