VPNs are often sold as a “privacy silver bullet,” but that framing causes more confusion.
A VPN does not make you anonymous.
It does not stop cookies, logins, browser fingerprinting, or payment-based identification.
What a VPN actually does is much narrower and more technical:
- It encrypts your internet traffic in transit
- It prevents your ISP or local network from seeing which destinations you connect to
- It makes websites see the VPN server’s IP instead of your real one
- That’s privacy at the network level, not identity hiding.
I wrote a detailed blogpost. Check it out.
Not everything is good about VPNs, you should check your DNS configuration also.
Yes you are right. You should run DNS leak tests.