A friend of mine — smart guy, works in finance — once told me he uses a VPN so his employer can't see what he does online at home. He felt completely invisible. What he didn't know: he was logged into Chrome with his work Google account the entire time. His browsing history was syncing directly to Google's servers, VPN running in the background like a bouncer guarding an empty room.
That gap between what people think a VPN does and what it actually does is where most of the confusion lives.
The Thing A VPN Actually Does Well
When you connect to a VPN, your internet traffic gets routed through an encrypted tunnel to a server somewhere else in the world. To your internet service provider — Comcast, AT&T, whoever takes your money each month — your traffic looks like a scrambled blob going to one address. They can see that you're using a VPN. They cannot see which sites you're visiting or what you're sending.
That's genuinely useful. If you're on public Wi-Fi at an airport or coffee shop, a VPN stops someone on the same network from intercepting your unencrypted traffic. It also masks your IP address from the websites you visit, which limits one layer of location tracking.
Your IP address is not as anonymous as most people assume, but it's also not nothing. Hiding it removes a data point advertisers and data brokers use to build profiles on you.
What It Does Not Hide — And This Is Where People Get Burned
Here's the part most VPN marketing conveniently skips: a VPN does nothing about tracking that happens after you land on a website.
When you visit a site, that site drops cookies, runs fingerprinting scripts, and often loads third-party trackers from Facebook, Google, and dozens of data brokers you've never heard of. None of that cares about your IP address. It tracks you through your browser, your account logins, and behavioral patterns.
According to the Electronic Frontier Foundation, browser fingerprinting alone — using details like your screen resolution, installed fonts, and browser version — can identify you with startling accuracy, even without cookies. A VPN does exactly zero to prevent this.
If you're logged into Gmail while browsing, Google sees everything. If you're logged into Facebook, same story. The VPN is hiding your traffic from your ISP while handing a detailed map of your behavior to the platforms you're already authenticated with.
The Counterintuitive Part Most Articles Miss
Here's what almost nobody talks about: your VPN provider becomes your new ISP.
When you use a VPN, you're not becoming anonymous — you're shifting who gets to see your traffic. Instead of Comcast knowing your browsing habits, now your VPN provider does. The difference is that Comcast is a regulated telecommunications company with legal obligations. Your VPN provider, depending on where they're incorporated, may have none of those constraints.
Many VPN companies claim to keep "no logs." Some of these claims have been tested and held up. Others have collapsed the moment a court subpoena arrived. According to Mullvad VPN's published transparency reports, when Swedish police raided their offices in 2023, officers left empty-handed because Mullvad genuinely had nothing stored. That's the exception, not the rule — and it's worth knowing which category your VPN falls into before you trust it with anything sensitive.
When A VPN Actually Makes Sense
Use a VPN when the specific threat you're protecting against is network-level snooping. That means:
- You're on untrusted public Wi-Fi and want to stop someone on the same network from intercepting your traffic.
- You want to prevent your ISP from selling your browsing data to advertisers (yes, this is legal in the United States after Congress rolled back FCC privacy protections in 2017).
- You're traveling and need to access content restricted to your home country.
- You want to add one layer of separation between your IP address and the sites you visit.
These are legitimate use cases. A VPN genuinely helps with all of them.
What it will not do: protect you from phishing attacks, stop malware already on your device, prevent data breaches at companies you have accounts with, or make you untraceable online.
Actionable Choices That Actually Matter
If you want to take your privacy seriously, these moves matter more than which VPN you pick:
Switch to a browser that fights fingerprinting. Firefox with uBlock Origin installed, or Brave, does more for your day-to-day privacy than most VPN subscriptions. According to the Privacy Guides project, which is maintained by a community of security researchers, browser choice is one of the highest-leverage decisions most people overlook.
Log out of platform accounts when you're not using them. This sounds trivial. It isn't. An active Google session is a direct pipeline of your behavior regardless of your network configuration.
Use a reputable, paid VPN with a verified no-log policy. Free VPNs are almost universally terrible for privacy. The product is you. Mullvad and ProtonVPN are the two with the strongest audit histories; both charge a small monthly fee.
Combine your VPN with a privacy-focused DNS provider. Your DNS queries — essentially, the list of domain names you're looking up — can leak outside the VPN tunnel if your setup isn't configured correctly. Most people don't check this. You can verify your DNS isn't leaking at dnsleaktest.com.
The Honest Caveat
Even if you do all of this perfectly — right VPN, right browser, logged out of everything — you are not invisible. Sophisticated tracking, especially from large platforms with cross-device data, can re-identify you through behavioral patterns alone. A VPN is one layer in a defense that requires multiple layers. Anyone who sells you the idea that one tool solves the whole problem is selling you something.
Privacy isn't a switch you flip. It's a set of trade-offs you make, knowingly, with realistic expectations about what each choice does and doesn't buy you.
Sources:
- Electronic Frontier Foundation
- Mullvad VPN Transparency Report
- Privacy Guides






