You pay for a VPN every month. You turn it on before browsing. You assume you are protected. But there is a critical vulnerability most VPN users never think to check — and if you have it, your real identity is exposed to every website you visit.
It is called a DNS leak. And it is more common than you think.
What Is a DNS Leak?
When you type a website address into your browser, your device sends a request to a DNS server to translate that name into an IP address. Normally, your VPN should route that request through its own encrypted servers. But with a DNS leak, that request bypasses the VPN entirely and goes straight to your internet provider's servers — revealing exactly which sites you are visiting.
Your IP address, your location, your ISP name — all exposed. Even though your VPN is active.
How to Test Your VPN Right Now
Step 1: Connect to your VPN as you normally would. Step 2: Go to dnsleaktest.com. Step 3: Click Extended Test and wait for results. Step 4: Look at the server names and ISP column. If you see your real internet provider listed rather than your VPN provider, you have a leak.
You can also visit ipleak.net for a second opinion. A clean VPN setup should show only servers belonging to your VPN provider.
What to Do If You Are Leaking
First, check your VPN settings for a DNS leak protection toggle and enable it. Most reputable VPNs have this option but it is sometimes off by default. Second, consider switching to a provider with a better track record on DNS security. Third, enable IPv6 leak protection as well, since many VPNs only protect IPv4 by default.
VPNs Are Only One Layer
Even a perfectly functioning VPN does not make you fully private. It hides your IP address from the sites you visit and encrypts your traffic from your ISP. But it does not stop browser fingerprinting, app-level tracking, data broker collection, or account-based surveillance.
Real privacy requires layering multiple protections together.
The VPN Mastery Guide breaks down the full picture.
How to choose a VPN that does not leak, how to test it, and 6 other privacy layers most people skip. Step-by-step, no technical background required.
Quick VPN Checklist
Run a DNS leak test. Enable DNS leak protection in your VPN settings. Enable IPv6 leak protection. Use a kill switch to cut your internet if the VPN drops. Avoid free VPNs — they typically monetize your data. And remember: a VPN is a tool, not a complete privacy solution.
Follow @trendprivacy for more privacy tips every week.