VPN adverts promise to make you invisible online. The reality is more modest, and more useful once you know what a VPN actually does. Here’s what it changes, when it’s worth having, and how to set one up.
What a VPN does
A VPN (virtual private network) does two things when you switch it on:
- It encrypts the connection between your device and the VPN company’s server. Anyone in between, such as the owner of a café’s Wi-Fi or your internet provider, sees only scrambled data going to one server.
- It swaps your IP address for the server’s. Websites see the VPN server’s address and location instead of yours. Connect to a server in Canada and sites treat you as a visitor from Canada.
What it doesn’t do
- It doesn’t make you anonymous. If you sign in to Google, Facebook or anything else, they still know it’s you. Cookies and browser fingerprinting keep working too.
- It moves trust rather than removing it. Your internet provider can no longer see which sites you visit, but the VPN company can. Choosing a trustworthy provider is the whole game.
- It doesn’t stop malware or phishing. Some VPN apps bundle ad or malware blocking, but that’s an extra, not what a VPN is.
It’s also worth knowing that most websites already use HTTPS (the padlock in the address bar), which encrypts what you send and receive. A VPN adds a layer on top: it hides which sites you’re visiting from the local network and your provider.
When a VPN is worth it
- On public Wi-Fi you don’t trust: hotels, airports, cafés. HTTPS protects most of your traffic already, but a VPN closes the gaps, such as apps that don’t encrypt properly and networks that try to redirect you.
- Keeping your browsing history from your internet provider, which in some countries can log and use it.
- Travelling, to reach your home bank, services or streaming catalogue that block foreign connections. Check the streaming service’s terms first; many forbid using a VPN to change regions and actively block VPN servers.
- Avoiding blocks on legal sites in places that restrict them, where VPNs are legal to use.
If you mostly browse at home on your own Wi-Fi, a VPN adds little day to day.
How to choose a VPN
- An audited no-logs policy. The provider should promise not to record what you do, and have that checked by an independent auditor. Look for the audit report on its website, not just the claim.
- Where the company is based and whether it has handed over data when asked by authorities. A clean history in real court cases is worth more than marketing.
- Modern protocols such as WireGuard (or the provider’s own version of it), which are fast and secure.
- A kill switch that cuts your internet if the VPN drops, so nothing slips out unprotected.
- Apps for all your devices and enough simultaneous connections for your household.
Be careful with free VPNs. Running servers costs money, and many free apps pay for it by collecting and selling your data, which defeats the point. The exception is a free tier from an established paid provider (Proton VPN’s free plan is the best-known example), which has limits on speed or server choice but doesn’t sell your data.
How to set one up
- Sign up with the provider you’ve chosen. Paying yearly is usually much cheaper than monthly, and most offer a money-back period, so you can test it first.
- Install the app from the provider’s website or your device’s app store.
- Sign in and allow the app to add a VPN configuration when your phone or computer asks.
- Tap Connect. The app picks the fastest nearby server. To appear in a specific country, choose it from the server list instead.
- Turn on the kill switch and, if you want it always on, the “connect on startup” or “auto-connect on untrusted Wi-Fi” option in settings.
To check it’s working, search “what is my IP” before and after connecting: the address and location should change.
A VPN will slow your connection slightly, because traffic takes a detour through its server. With a good provider and a nearby server, most people don’t notice it outside of large downloads and online games.
One last note: VPNs are legal in most countries, but some restrict or ban them. Check the rules before you rely on one abroad.
