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Why Chrome Users Are at Risk
Google Chrome is the most popular browser in the world, but its DNS handling can introduce privacy risks that many users are unaware of. By default, Chrome uses Google's own DNS resolution and may pre-fetch DNS queries for pages you haven't even visited yet. This behaviour can bypass your VPN's DNS settings and expose your browsing activity to third parties.
Even if you're running a VPN, Chrome's built-in DNS settings can override your system's network configuration. This means your DNS queries might still be sent to Google's public DNS servers rather than your VPN provider's encrypted servers — resulting in a DNS leak.
How Chrome Handles DNS over HTTPS
Chrome supports DNS over HTTPS (DoH), which encrypts your DNS queries so they can't be read by anyone monitoring your network. When enabled, Chrome sends DNS lookups to a secure HTTPS endpoint instead of using plaintext UDP requests. This is a strong privacy improvement, but it only works if Chrome's DoH setting is correctly configured and your DNS provider supports it.
The issue is that Chrome's default DoH behaviour depends on your operating system's DNS provider. If your ISP's DNS servers don't support DoH, Chrome will fall back to unencrypted DNS — and your queries will be visible to your ISP. This fallback happens silently, giving users a false sense of security.
How to Check and Fix DNS Leaks in Chrome
Follow these steps to secure your DNS in Chrome:
- Open Chrome and navigate to chrome://settings/security.
- Scroll to "Use secure DNS" and enable it.
- Select "With: Cloudflare (1.1.1.1)" or another trusted DoH provider from the dropdown.
- Close all Chrome windows and restart the browser.
- Run our free DNS Leak Test to confirm your DNS queries are no longer leaking.
If you're using a VPN, make sure your VPN's DNS leak protection is also enabled. Some VPNs have their own DNS servers that should take priority over Chrome's settings. For a broader guide, see our step-by-step DNS leak fix guide.
Chrome can also leak your real IP address through WebRTC. Learn how to disable this in our Chrome WebRTC leak fix guide.
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