Glossary
VPN
A VPN — a virtual private network — is a service that routes your internet traffic through its own server.
What it means
A VPN — a virtual private network — is a service that routes your internet traffic through its own server. To the websites you visit, your traffic appears to come from the VPN's address, not yours. To your local network and your internet provider, your browsing is hidden behind the encrypted connection to the VPN. It is a tool for shifting who can see your traffic, not for removing the need for trust.
How it works
When you connect to a VPN, your device builds an encrypted tunnel to the VPN provider's server, and all your traffic passes through it. The provider decrypts the traffic and forwards it to its destination, and returns the replies through the same tunnel. Your internet provider sees only the encrypted connection to the VPN server; the websites you visit see the VPN server's address; the VPN provider itself can see your traffic. The honest summary is that a VPN moves your trust from your provider to the VPN provider — which is why who runs the VPN, what it logs, and under which country's law it operates are the questions that matter.
Example
Imagine Omar, a fictional traveller, working from a cafe's public Wi-Fi. Without a VPN, other people on the same network could potentially see the unencrypted parts of his traffic. With a VPN, his traffic is encrypted to the VPN server, so the cafe network sees only that encrypted connection. But the VPN provider can now see his browsing — and if Omar logs into his bank inside the VPN connection, the bank still knows exactly who he is. The VPN changed the audience; it did not make him anonymous.
Common misunderstandings
The most common misunderstanding is that a VPN makes you anonymous. It does not: the provider can see your traffic, the sites you log into know who you are, and a VPN protects you from neither phishing nor malware. A VPN is a useful tool for specific situations — public Wi-Fi, a network block, hiding browsing from a local network — and a poor one for the job its advertising usually promises.
Related terms
Learn more
- What does a VPN hide?
- Do I need a VPN?
- Tor vs VPN: what each hides
- Internet Privacy Fundamentals
- Back to the full glossary
Last checked: 14 November 2026.
Frequently asked questions
Does a VPN make me anonymous?
No. A VPN hides your browsing from your local network and your provider, but the VPN provider itself can see your traffic, and sites you log into still know who you are. Anonymity is a much stronger claim than any VPN can support.
Is a free VPN safe?
Often not. Running a VPN costs money, so a free service has to pay for it somehow — and the cheapest way is logging and selling data about your browsing. A free VPN can be worse than no VPN at all, because it sees everything you do.
Do I need a VPN at home?
For most people, not really. On a home network, the main benefit is hiding your browsing from your provider — and your provider is replaced by the VPN provider, which can see the same traffic. The situations where a VPN helps most are public Wi-Fi and network blocks.