You click the “Connect” button. The little shield icon on your taskbar turns bright green. A reassuring notification pops up telling you that your connection is now “secure” and your IP address is “hidden.” You breathe a sigh of relief, thinking you are now completely invisible online.
You are probably wrong.
I recently discovered a disturbing trend while auditing several privacy setups: that little green “connected” icon is often lying to your face.
I have tested dozens of setups, and what I found will shock you. Many VPNs—especially free ones—are secretly leaking your real IP address, your DNS requests, and your exact location data right past the encrypted tunnel.
They give you a false sense of security while leaving your front door wide open.
If you are using a free VPN because you care about your privacy, or if you are paying good money for a premium service, you need proof that it is actually doing its job. You cannot blindly trust a software interface.
In this investigation, I am going to show you exactly how to check if your VPN is working, what these invisible leaks look like, and how you can verify your own connection in under ten seconds.
Is your free VPN leaking your real IP address?
Let me be entirely blunt: a faulty VPN is infinitely more dangerous than not using a VPN at all.
When you browse the web without a VPN, you know you are exposed. You behave accordingly. But when you think you are wearing an invisibility cloak, you take risks.
You log into sensitive accounts, you bypass geographic restrictions, and you assume your ISP has no idea what you are reading or watching.
Here is the alarming truth: many free VPNs simply do not work properly. The business model of a free VPN is rarely built around providing military-grade security out of the goodness of their hearts. Running servers costs money.
If you aren’t paying for the product, you are the product. But beyond the shady data collection practices of free VPN providers, their actual technology is often fundamentally broken.
The most common point of failure is something called WebRTC (Web Real-Time Communication).
This is a feature built into almost every modern browser—Chrome, Firefox, Safari, Edge—that allows for peer-to-peer applications like voice and video chat to function smoothly.
The problem? WebRTC can be exploited by any website to request your true, underlying IP address, completely bypassing your active VPN connection.
So, while your VPN application proudly displays that you are connected to a server in Switzerland, a simple WebRTC script running silently in the background of a webpage has just grabbed your real home IP address and logged it. Your free VPN did absolutely nothing to stop it.
If you want to know if your free VPN is actually hiding your IP or just pretending to, you cannot rely on the VPN’s own interface. You have to run a forensic test.
This is exactly why I built the Pixel Defence VPN Leak Test. It forces your browser to reveal what it is actually broadcasting, bypassing the VPN tunnel entirely to see if your real IP is bleeding through.
Why does my VPN say connected but still leak my location?
You might be wondering how a piece of software designed specifically to hide your location can fail so spectacularly while still claiming to be “connected.”
The answer lies in how operating systems handle network traffic. When you start a VPN, it creates an encrypted tunnel between your device and the VPN server. It then tells your operating system, “Route all internet traffic through this tunnel.”
However, operating systems are complex, messy environments. Sometimes, connections drop for a microsecond. Sometimes, a specific application decides it doesn’t want to use the tunnel and reaches out to the internet directly.
Sometimes, IPv6 traffic (the newer internet protocol) is completely ignored by the VPN software, which only bothers to encrypt the older IPv4 traffic.
When this happens, your VPN doesn’t necessarily crash. The tunnel might still be open for most of your traffic, so the icon stays green.
But that microsecond drop, or that rogue IPv6 request, has just leaked your true location to the website you are visiting or the tracker embedded on the page.
This is what security researchers call “IP bleed.” It is silent, it is invisible to the user, and it happens every single day.
I built the VPN Leak Test tool specifically to catch these anomalies. You don’t need to be a network engineer to use it. You just need to be willing to look behind the curtain and see what your connection is actually doing.
What is a DNS leak and how do you test for it?
IP bleeding is bad, but there is another, arguably worse, way your VPN can betray you: the DNS leak.
Think of DNS (Domain Name System) as the phonebook of the internet. When you type pixeldefence.com into your browser, your computer doesn’t know where that is. It has to ask a DNS server to translate that readable name into a string of numbers (an IP address) so it can connect.
Normally, your Internet Service Provider (ISP) handles these DNS requests. This means your ISP has a perfect, timestamped log of every single website you have ever visited.
When you use a proper VPN, all of your DNS requests should be encrypted and sent through the tunnel to be handled by the VPN’s own secure DNS servers. Your ISP should only see an encrypted stream of data heading to a single IP address (the VPN server).
But what happens when the VPN software is poorly coded?
In many cases, the VPN successfully encrypts your web traffic but forgets to hijack the DNS requests. Your browser sends the web traffic through the secure tunnel, but it sends the DNS request *outside* the tunnel, directly to your ISP.
This is a catastrophic privacy failure.
Your ISP now knows exactly which websites you are visiting. The websites themselves might only see the VPN’s IP address, but your ISP has the complete map of your browsing history. Again, your VPN icon is green. It says you are connected. But you are completely exposed.
You must routinely test your connection to ensure your DNS requests are not leaking. The [Pixel Defence VPN Leak Test] actively probes your connection to see which servers are handling your DNS requests.
If you see your ISP’s name on that list while your VPN is supposedly active, you have a DNS leak, and you need to change your setup immediately.
Are paid VPNs actually worth the money?
Given everything I have just exposed about free VPNs, the logical next question is: are paid VPNs any better? Or are you just paying for a green icon that lies to you for $10 a month?
The reality is that paying for a VPN does not guarantee immunity from leaks. I have audited premium, expensive VPN services that still suffered from IPv6 leaks or failed to implement a proper “kill switch” (a feature that cuts your internet entirely if the VPN connection drops, preventing accidental exposure).
However, a reputable, paid VPN provider has a massive financial incentive to get this right. They can afford to hire dedicated security engineers to constantly patch vulnerabilities and update their client software to handle the messy routing tables of Windows, macOS, and Linux.
A paid VPN is usually worth the money if you verify that it works.
If you are paying for a VPN right now, you need to prove to yourself that your money is well spent. You need to know that your investment is actually shielding you from your ISP, your government, and corporate data brokers.
Do not take their marketing copy as gospel. They will all claim to have “military-grade encryption” and “zero leaks.” But marketing teams do not write the networking code.
You need independent verification. Turn on your paid VPN, go to the [Pixel Defence VPN Leak Test], and run the scan. If your premium VPN fails the test, cancel your subscription and demand a refund. You are paying for a shield; if it has holes in it, it is worthless.
How to check if your VPN is working right now?
By now, you should understand that a VPN connection is not a “set it and forget it” solution. It is an active defense mechanism that needs to be regularly audited.
The internet infrastructure is constantly changing, browsers update their protocols, and operating systems tweak their networking rules. A VPN that worked perfectly yesterday might spring a leak tomorrow.
Here is exactly how to check if your VPN is working, step by step:
1. Find your baseline:
Before you turn your VPN on, you need to know what your unprotected data looks like. Make sure your VPN is completely disconnected.
2. Run the initial test:
Go to the [Pixel Defence VPN Leak Test]and let it run its analysis. It will show you your real IP address, your general location, and the DNS servers your ISP is currently using. Take a screenshot or write this information down. This is your exposed profile.
3. Engage your defense:
Close your browser entirely. Turn on your VPN software and connect to a server. Wait for the connection to fully establish (wait for the green icon, even though we know it lies).
4. Run the forensic check:
Open a fresh browser window (preferably an incognito or private window to avoid cached data). Go back to the [VPN Leak Test tool]and run the scan again.
5. Compare the results:
Look closely at the new report.
If the tool shows an IP address that matches your baseline, your VPN is failing completely.
If the tool shows the VPN’s IP address but lists your ISP’s name under the DNS section, you have a DNS leak.
If the tool exposes your real IP address in the WebRTC section, you have an IP bleed.
A passing grade means that none of the data on the second test matches the data on the first test. Your IP address should be different, your location should match the VPN server you chose, and the DNS servers should belong to the VPN provider or a trusted third-party, not your local ISP.
Action Checklist
Privacy is not a state of being; it is a continuous practice. You cannot buy a piece of software and assume you are forever protected. You have to verify.
Here is what you need to do today:
Run the leak test immediately:
Stop what you are doing, turn on your VPN, and use the [Pixel Defence VPN Leak Test] to verify your connection. Do not wait until you are doing something sensitive.
Check your VPN settings:
If you are leaking, open your VPN application preferences. Look for settings like “Block WebRTC,” “IPv6 Leak Protection,” and “DNS Leak Protection.” Turn them all on.
Enable the Kill Switch:
Find the setting called “Network Lock” or “Kill Switch” and enable it. This ensures that if the VPN server drops your connection, your internet access is cut off instantly, preventing accidental exposure.
Ditch the free tier:
If you are using a free VPN and it fails the leak test (and it probably will), uninstall it. It is actively harming your privacy by giving you a false sense of security. Upgrade to a reputable paid provider, and then test them, too.
Do not trust the connected status. Verify your defense. Your privacy depends on it.
