How to Use a VPN: What It Does and What It Does Not Do

A virtual private network (VPN) creates an encrypted connection between your device and a server, then sends your internet traffic through that server. It can protect data on public Wi-Fi and hide your traffic from the local network. It does not make you anonymous, and it is not a replacement for other security steps. This guide explains what it can and cannot do.

What a VPN helps with

Encrypting data on public Wi-Fi in cafés, airports and hotels.
Hiding your browsing from your internet provider and the local network.
Accessing a work network from home, if your employer provides one.

What a VPN does not do

It does not stop phishing, malware or scams. You still need to think before you click.
It does not make you anonymous to websites you log in to. They still know who you are.
It does not protect against viruses on your device.
It does not guarantee access to content in every country, or make illegal activity legal.

Choosing a VPN

Choose a service with a clear privacy policy, an independent audit or security review, and a company that is open about where it is based. Be cautious of free services, because they often earn money from your data. Check whether the app works on all your devices.

Setting one up

Install the official app from the service's website or the app store.
Sign in and choose a server location near you for the best speed.
Turn the VPN on before using public Wi-Fi.
Turn on the kill switch if the app has one, so traffic stops if the VPN drops.

Do you need one at home?

At home on your own Wi-Fi, a VPN is optional for most people. The bigger gains come from strong passwords, two-factor authentication, updates and a secure router. See how to browse privately for more options.

Frequently asked questions

Can a VPN make streaming faster?

It usually makes it slower, because your traffic takes a longer route. It can help only in limited cases such as network throttling.

Is a browser's built-in proxy the same as a VPN?

No. A proxy usually covers only the browser and may not encrypt traffic. A VPN covers the whole device.

Free VPNs need careful checks

A free VPN must earn money somehow. Some sell browsing data, show aggressive advertising or limit speed until you pay. If you use a free service, read its privacy policy, check who operates it and avoid services that ask for unnecessary permissions. For sensitive work, a paid service with a clear policy is usually the safer choice.

VPNs and work devices

Check with your employer before you install a personal VPN on a work computer. Some companies have their own VPN rules, and a personal tool can conflict with company security software. Follow the policy and ask IT for the approved method.